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1
Guelph Wastewater Treatment Plant Headworks Upgrade Contract No. 08-161
A D D E N D U M NO. 2
The following shall form part of the tender documents issued by the City of Guelph’s Purchasing Department, November, 2008. NOTE: the acknowledgement of this addendum must be indicated on FT3 DRAWINGS:
The following PDF drawings have been uploaded to the City of Guelph’s website and supersede the drawings which have been removed from the website: 04 - DD102 - HEADWORKS BUILDING - DEMOLITION 2_rev1
19 - E001 - ELECTRICAL LEGEND AND ABBREVIATIONS_rev1.pdf
20 - E002 - EXISTING SINGLE LINE DIAGRAM_rev1.pdf
21 - E003 - MODIFIED SINGLE LINE DIAGRAM_rev1.pdf
22 - E004 - EXISTING AND MODIFIED MCC LAYOUT_rev1.pdf
23 - E005 - LIGHTING PANEL_rev1.pdf
24 - E006 - MAIN FLOOR PLAN - ELECTRICAL DEMOLITION_rev1.pdf
25 - E007 - MAIN FLOOR PLAN - NEW MODIFICATIONS_rev1.pdf
26 - E008 - EXISTING AND NEW GRIT PUMP SCHEMATIC AND CONTROL PANEL_rev1
27 - E009 - NEW STEP SCREEN AND BAR SCREEN CONTROL SCHEMATIC_rev1.pdf
28 - I001 - INSTRUMENTATION LEGEND AND ABBREVIATIONS_rev1.pdf
2
29 - I002 - PROCESS GRIT REMOVAL AND HANDLING - PFD_rev1.pdf
30 - I003 - CP-01 LOOP DRAWING 1 OF 4_rev1.pdf
31 - I004 - CP-01 LOOP DRAWING 2 OF 4_rev1.pdf
32 - I005 - CP-01 LOOP DRAWING 3 OF 4_rev1.pdf
33 - I006 - CP-01 LOOP DRAWING 4 OF 4_rev1.pdf
The only changes that have been made to the drawings are related to scaling and document sizing. All PDFs are now provided in 22 inch x 34 inch format.
ADD: To the specifications the following pages. Section 14552 Clause 2.02.A, following Clause 2.02.A.3, add the following:
4. Atara Equipment Ltd. CLARIFICATION: All drawings have been provided for download as 22 inch by 34 inch PDF documents. The scales indicated on the drawings are only applicable when the PDF files are printed at 100% scale.
TOR/371779 NOVEMBER 24, 2008
16950 1 CO-ORDINATION,
HARMONICS, &
ARC FLASH
SECTION 16950
CO-ORDINATION, HARMONICS, & ARC FLASH
PART 1 GENERAL
1.01 INTENT
A. Provide on site inspection, testing, and calibration of relays.
B. Provide harmonics analysis.
C. Perform all work without any interruptions to station operation.
1.02 SCOPE
A. Coordination Study.
B. Harmonics Analysis
C. Testing of 600 Volt cables
D. Arc Flash Study
1.03 RELATED WORKS
A. Section 16223 – Motor Starters to 600V.
B. Section 16225 – Motor Control Centre.
C. Section 16238 – Power Generation Diesel.
D. Section16122 – Wires and Cables.
1.04 DATA COLLECTION FOR STUDY
A. Obtain all the required data for the coordination study from the contract
documents and drawings, supplier of the major equipment, and by site visit.
B. Expedite collection of data to assure completion of study as required for final
acceptance of transformer.
1.05 QUALIFICATIONS
A. The firm should be currently involved in high and low voltage power systems.
The study shall be performed by a registered professional engineer.
TOR/371779 NOVEMBER 24, 2008
16950 2 CO-ORDINATION,
HARMONICS, &
ARC FLASH
Credentials of the individual performing study and background of the firm
shall be submitted to the Owner for review.
B. The individual in charge of the study and the firm shall have produced similar
work for a minimum period of 5 years
PART 2 PRODUCTS
2.01 SHORT CIRCUIT AND COORDINATION STUDY
A. Perform short circuit and phase and ground coordination study using the latest
version of software, in Windows format.
B. Submit six (6) copies of printed documents of the short circuit and
coordination study.
C. Study shall include all devices from Hydro protective devices on incoming
lines to the largest motor and feeder breakers connected on 600 Volt Motor
Control Centers.
D. For motor control circuits show the MCC, full load current plus symmetrical
and asymmetrical of the largest motor current and time to ensure that
protective devices will not trip out during motor starting condition.
E. Provide time-current curves graphically indicating the coordination proposed
for the system, centered on conventional, full size, log-log forms. Include
with each curve sheet a complete title and one line diagram with legend
identifying the specific portion of the system covered by that particular curve
sheet. Include a detailed description of each protective device identifying its
type, function, manufacturer, and time-current characteristics. Tabulate
recommended settings.
F. Include on the curve sheets power company relay and fuse characteristics,
cable damage curves, transformer damage curves, 600 Volt circuit breakers
curves, large motor starting curves and largest feeder breaker in each Motor
Control Center.
G. Provide a table comparing required interrupting rating for breakers at the 600
Volt MCC with the actual interrupting rating of the breakers at the MCC.
H. The study shall review setting and interrupting levels of existing breakers and
fuses at the plant and provide recommendations if these require changes.
TOR/371779 NOVEMBER 24, 2008
16950 3 CO-ORDINATION,
HARMONICS, &
ARC FLASH
2.02 HARMONIC ANALYSIS
A. Arrange for services of a Professional Engineer specializing in harmonic
analysis studies to carry out a complete Harmonics Analysis for the site.
B. Submit six (6) copies of a typewritten report, sealed by a Professional
Engineer licensed in Ontario. Comply with requirements of IEEE testing and
harmonics limits.
2.03 ARC FLASH STUDY
A. Provide an Arc Flash Hazard Study for the electrical distribution system
shown on the single line drawings in accordance with the requirements
detailed in NFPA 70E. The intent of the Arch Flash Hazard Study is to
determine arc flash hazards that may be encountered by maintenance
personnel at each major piece of electrical equipment shown on the single line
drawing. This includes 600 volt switchgear, panel boards, motor control
centers and major mechanical equipment. The study will provide appropriate
Arc Flash Hazard Warning Labels at each equipment location. Install labels
on relevant equipment.
B. Study will provide recommendations for reducing arc flash energy.
C. The arch flash hazard study shall include all the possible modes of the
electrical distribution system as shown on the single line drawing. It shall
consider operation during normal conditions, alternate operations, emergency
power conditions and any other operations, which could result in maximum
arc flash hazard.
D. Provide a spare warning label for each location.
E. Submit six (6) copies of a typewritten report, sealed by a Professional
Engineer licensed in Ontario.
PART 3 EXECUTION
3.01 INSPECTION REPORT
A. Provide six (6) copies of the reports detailing results of all the tests.
B. Modify ground grid as per recommendations of the grounding study.
C. Implement recommendations contained in the harmonics analysis to meet the
requirements of IEEE-519
END OF SECTION
TOR/371779 NOVEMBER 24, 2008
11282 SUPPLEMENT 1 FABRICATED SLIDE GATES
SLIDE GATE SCHEDULE
Gate
Identification No.
and Location
Assembly Style
Wall Opening
(width/height
mm)
Gate Height (mm)
Material
Design Operating
Head (meters)
Seating/
Unseating
Condition
Wall Thimble
Type/Depth
Operator
Type/Control
Style
Screen 1 Inlet
Gate
Sluice Gate 1,200 1,500 SS 304 1.5 m N/A Type 3
Screen 1 Outlet
Gate
Sluice Gate 1,200 1,500 SS 304 1.5 m N/A Type 3
Screen 2 Inlet
Gate
Sluice Gate 1,200 1,500 SS 304 1.5 m N/A Type 3
Screen 2 Outlet
Gate
Sluice Gate 1,200 1,500 SS 304 1.5 m N/A Type 3
TOR/371779 NOVEMBER 24, 2008
16950 1 CO-ORDINATION,
HARMONICS, &
ARC FLASH
SECTION 16950
CO-ORDINATION, HARMONICS, & ARC FLASH
PART 1 GENERAL
1.01 INTENT
A. Provide on site inspection, testing, and calibration of relays.
B. Provide harmonics analysis.
C. Perform all work without any interruptions to station operation.
1.02 SCOPE
A. Coordination Study.
B. Harmonics Analysis
C. Testing of 600 Volt cables
D. Arc Flash Study
1.03 RELATED WORKS
A. Section 16223 – Motor Starters to 600V.
B. Section 16225 – Motor Control Centre.
C. Section 16238 – Power Generation Diesel.
D. Section16122 – Wires and Cables.
1.04 DATA COLLECTION FOR STUDY
A. Obtain all the required data for the coordination study from the contract
documents and drawings, supplier of the major equipment, and by site visit.
B. Expedite collection of data to assure completion of study as required for final
acceptance of transformer.
1.05 QUALIFICATIONS
A. The firm should be currently involved in high and low voltage power systems.
The study shall be performed by a registered professional engineer.
TOR/371779 NOVEMBER 24, 2008
16950 2 CO-ORDINATION,
HARMONICS, &
ARC FLASH
Credentials of the individual performing study and background of the firm
shall be submitted to the Owner for review.
B. The individual in charge of the study and the firm shall have produced similar
work for a minimum period of 5 years
PART 2 PRODUCTS
2.01 SHORT CIRCUIT AND COORDINATION STUDY
A. Perform short circuit and phase and ground coordination study using the latest
version of software, in Windows format.
B. Submit six (6) copies of printed documents of the short circuit and
coordination study.
C. Study shall include all devices from Hydro protective devices on incoming
lines to the largest motor and feeder breakers connected on 600 Volt Motor
Control Centers.
D. For motor control circuits show the MCC, full load current plus symmetrical
and asymmetrical of the largest motor current and time to ensure that
protective devices will not trip out during motor starting condition.
E. Provide time-current curves graphically indicating the coordination proposed
for the system, centered on conventional, full size, log-log forms. Include
with each curve sheet a complete title and one line diagram with legend
identifying the specific portion of the system covered by that particular curve
sheet. Include a detailed description of each protective device identifying its
type, function, manufacturer, and time-current characteristics. Tabulate
recommended settings.
F. Include on the curve sheets power company relay and fuse characteristics,
cable damage curves, transformer damage curves, 600 Volt circuit breakers
curves, large motor starting curves and largest feeder breaker in each Motor
Control Center.
G. Provide a table comparing required interrupting rating for breakers at the 600
Volt MCC with the actual interrupting rating of the breakers at the MCC.
H. The study shall review setting and interrupting levels of existing breakers and
fuses at the plant and provide recommendations if these require changes.
TOR/371779 NOVEMBER 24, 2008
16950 3 CO-ORDINATION,
HARMONICS, &
ARC FLASH
2.02 HARMONIC ANALYSIS
A. Arrange for services of a Professional Engineer specializing in harmonic
analysis studies to carry out a complete Harmonics Analysis for the site.
B. Submit six (6) copies of a typewritten report, sealed by a Professional
Engineer licensed in Ontario. Comply with requirements of IEEE testing and
harmonics limits.
2.03 ARC FLASH STUDY
A. Provide an Arc Flash Hazard Study for the electrical distribution system
shown on the single line drawings in accordance with the requirements
detailed in NFPA 70E. The intent of the Arch Flash Hazard Study is to
determine arc flash hazards that may be encountered by maintenance
personnel at each major piece of electrical equipment shown on the single line
drawing. This includes 600 volt switchgear, panel boards, motor control
centers and major mechanical equipment. The study will provide appropriate
Arc Flash Hazard Warning Labels at each equipment location. Install labels
on relevant equipment.
B. Study will provide recommendations for reducing arc flash energy.
C. The arch flash hazard study shall include all the possible modes of the
electrical distribution system as shown on the single line drawing. It shall
consider operation during normal conditions, alternate operations, emergency
power conditions and any other operations, which could result in maximum
arc flash hazard.
D. Provide a spare warning label for each location.
E. Submit six (6) copies of a typewritten report, sealed by a Professional
Engineer licensed in Ontario.
PART 3 EXECUTION
3.01 INSPECTION REPORT
A. Provide six (6) copies of the reports detailing results of all the tests.
B. Modify ground grid as per recommendations of the grounding study.
C. Implement recommendations contained in the harmonics analysis to meet the
requirements of IEEE-519
END OF SECTION
TOR/371779 NOVEMBER 24, 2008
11282 SUPPLEMENT 1 FABRICATED SLIDE GATES
SLIDE GATE SCHEDULE
Gate
Identification No.
and Location
Assembly Style
Wall Opening
(width/height
mm)
Gate Height (mm)
Material
Design Operating
Head (meters)
Seating/
Unseating
Condition
Wall Thimble
Type/Depth
Operator
Type/Control
Style
Screen 1 Inlet
Gate
Sluice Gate 1,200 1,500 SS 304 1.5 m N/A Type 3
Screen 1 Outlet
Gate
Sluice Gate 1,200 1,500 SS 304 1.5 m N/A Type 3
Screen 2 Inlet
Gate
Sluice Gate 1,200 1,500 SS 304 1.5 m N/A Type 3
Screen 2 Outlet
Gate
Sluice Gate 1,200 1,500 SS 304 1.5 m N/A Type 3
WEMCO DATA SHEET WEMCO TORQUE-FLOW PUMPS P10-D305A Rev. 1 8/31/01 Page 1 INSTALLATION, OPERATION & MAINTENANCE GENERAL INSTRUCTIONS
This sheet is the property of Weir Specialty Pumps, 440 West 800 South, Salt Lake City, Utah and is loaned under the express condition that it is not to be used in any manner directly or indirectly detrimental to Weir Specialty Pumps.
WARNING
PLEASE STUDY THESE INSTRUCTIONS CAREFULLY BEFORE PUTTING THE PUMP INTO SERVICE. ADHERENCE TO THESE INSTRUCTIONS IS NECESSARY FOR SATISFACTORY START-UP OF YOUR WEMCO PUMP. OPERATING PERSONNEL MUST READ AND UNDERSTAND THE START-UP AND OPERATING PARAGRAPHS. I. INTRODUCTION
A. General Information
The WEMCO distribution network provides service wherever our pumps are sold. Should you require additional service information, do not hesitate to contact your local WEMCO representative.
B. Nameplate Data
Each pump has a nameplate affixed to it, with the pertinent data including the pump characteristics, model and serial number. When inquiring about parts or service, the above data should be supplied.
II. RECEIVING INSPECTION
Prior to signing any shipping documents, inspect the shipment for shortages or damages, and promptly report any to the carrier, noting damage on the freight bill of lading. MAKE ANY CLAIMS TO THE TRANSPORTATION COMPANY PROMPTLY. Do not remove any tags. Instruction sheets on various components as well as the Operation and Maintenance Manual for the pump may be included in the shipment. DO NOT DISCARD!
III. UNLOADING
Care must be taken when unloading pumps.
WEMCO DATA SHEET WEMCO TORQUE-FLOW PUMPS P10-D305A Rev. 1 8/31/01 Page 2 INSTALLATION, OPERATION & MAINTENANCE GENERAL INSTRUCTIONS
This sheet is the property of Weir Specialty Pumps, 440 West 800 South, Salt Lake City, Utah and is loaned under the express condition that it is not to be used in any manner directly or indirectly detrimental to Weir Specialty Pumps.
WARNING
EQUIPMENT LIFTING DEVICES SUCH AS CHAIN, LIFTING EYES, HOOKS, ETC. MUST BE APPROVED BY LOCAL, STATE OR FEDERAL SAFETY CODES. HOISTS AND CRANES MUST BE ADEQUATELY SIZED TO LIFT RATED LOADS. FAILURE TO USE APPROVED LIFTING DEVICES MAY RESULT IN INJURY. WHEN LIFTING THE PUMP IT IS IMPORTANT TO MAKE SURE THAT THE CHAIN AND CABLES ARE FASTENED RELIABLY TO THEIR RETAINING HOOKS.
When a horizontal pump is unloaded, it must be lifted at four equal points on the baseplate. When a vertical pump is unloaded, use lifting lugs on the motor mount. DO NOT LIFT BY MOTOR. Couplings, extended shafts and other accessories are normally shipped in separate containers to avoid damage.
IV. STORAGE INSTRUCTIONS
If the pump is not to be installed and operated immediately, store in a clean, dry place. WEMCO assumes the units will be placed in operation a few weeks after shipment, so no special protection is given the pump, drive or motor. IF THE PUMP IS TO BE STORED MORE THAN TWO WEEKS: A. Store pump in a clean, dry place free from vibration and extremes in
temperature. B. Protect all exposed, unpainted surfaces from rust.
C. Fully grease motor bearings initially, regrease every six months and rotate
the shaft by hand every week.
D. Vents and drains on motors should be fully operable. Any drain plugs should be removed. Vertical motors should be stored in the vertical position.
E. On pumps with grease lubricated bearings, fully grease bearings initially
and regrease every six months. On pumps with oil lubricated bearings, remove the vent on top of the bearing housing and fill the housing completely with a 20 weight non-detergent oil containing rust inhibitors.
WEMCO DATA SHEET WEMCO TORQUE-FLOW PUMPS P10-D305A Rev. 1 8/31/01 Page 3 INSTALLATION, OPERATION & MAINTENANCE GENERAL INSTRUCTIONS
This sheet is the property of Weir Specialty Pumps, 440 West 800 South, Salt Lake City, Utah and is loaned under the express condition that it is not to be used in any manner directly or indirectly detrimental to Weir Specialty Pumps.
Replace the vent. ROTATE THE SHAFT 2 OR 3 REVOLUTIONS BY HAND EVERY WEEK. Before starting, drain the oil to the recommended operating level, run for two minutes, drain all oil and refill with new oil to the proper level. BEFORE RUNNING, WATER MUST BE SUPPLIED TO THE PACKING OR SEAL CONNECTION. After prolonged storage, the bearing lubrication instructions in this Operation and Maintenance Manual must be followed.
F. Accessories such as drives, etc. should be protected in accordance with
the accessory manufacturer's instructions.
Following these recommendations will help ensure that the pumps will operate without problems and give long, trouble free service.
V. INSTALLATION
A. Location of Pump
The pump should be placed as near the liquid source as possible, avoiding valves and elbows whenever possible.
B. Piping
Guidelines for piping are given in the "Hydraulic Institute Standards" and should be reviewed prior to pump installation. All piping should be supported independently of, and line up naturally with, the pump flanges. NEVER DRAW PIPING INTO PLACE BY USE OF FORCE AT THE FLANGED CONNECTION OF THE PUMP. WEMCO recommends that flexible couplings or expansion joints be installed in the suction and discharge piping as near the pump as possible (to allow for temperature and pressure expansion) so that there will be no strain on the pump casing.
WARNING
SUCH STRAINS COULD RESULT IN STRUCTURAL FAILURE LEADING TO INJURY.
To obtain maximum available suction head, the suction line should be as direct and as short as possible, avoiding elbows. If elbows must be used,
WEMCO DATA SHEET WEMCO TORQUE-FLOW PUMPS P10-D305A Rev. 1 8/31/01 Page 4 INSTALLATION, OPERATION & MAINTENANCE GENERAL INSTRUCTIONS
This sheet is the property of Weir Specialty Pumps, 440 West 800 South, Salt Lake City, Utah and is loaned under the express condition that it is not to be used in any manner directly or indirectly detrimental to Weir Specialty Pumps.
a long radius type is preferred. It is important to avoid any high point in a suction line in which air may accumulate and cause loss of prime. For the same reason, it is important to have the suction line airtight when suction lift exists. The suction pipe must be installed so that no air pockets can form, and the pipe must be level or slope upward to the pump intake. To prevent excessive losses, the suction piping must never be smaller in diameter than the pump suction, and preferably one pipe size larger. Eccentric reducers should be used on the suction side, with the flat side on top as shown in Figure 1. Use as few fittings as possible, and when elevating to any height, go vertically upward from the pump, then horizontally to the point of discharge.
FIGURE 1 FIGURE 2 Recommended Not Recommended Suction conditions such as liquid temperature, altitude above sea level and specific gravity should be compensated for by proper selection of the suction line. The pump should not operate on a suction lift when pumping liquid with entrained air or gas. Check valves should not be used in the suction line and gate valves should be installed with the stem horizontal to prevent trapping air or gas. Suction valves must be fully open during operation.
C. Installation on Foundation
The pump and drive assembly should be placed on the foundation with the coupling halves disconnected. On belt drive units, the belts may remain on the sheaves. The alignment operation must be completed before the coupling is reassembled. The baseplate should be supported on metal
WEMCO DATA SHEET WEMCO TORQUE-FLOW PUMPS P10-D305A Rev. 1 8/31/01 Page 5 INSTALLATION, OPERATION & MAINTENANCE GENERAL INSTRUCTIONS
This sheet is the property of Weir Specialty Pumps, 440 West 800 South, Salt Lake City, Utah and is loaned under the express condition that it is not to be used in any manner directly or indirectly detrimental to Weir Specialty Pumps.
wedges or blocks as illustrated in Figures 3 and 4. The support wedges or blocks should be placed close to the anchor bolts. Adjust the metal wedges or blocks around the base edge until the base is level. Suction and discharge flanges should be checked by means of a level and coupling alignment should be checked with a straightedge. Corrections may be made for flange and coupling level or plumb by shims under the pump or motor.
FIGURE 3 FIGURE 4 Typical Foundation Bolt Design Method of Leveling
D. Grouting
Evenly adjust all anchor bolts, but not too firmly, after the first alignment has been completed. The baseplate can then be grouted to the foundation. All voids under the baseplate must be filled with grout. It is desirable to grout all wedges and blocks in place. Anchor bolts should not be fully tightened until the grout has hardened, approximately 48 hours after pouring.
E. Connection of Piping
The initial alignment of the pump and driver should be completed before the piping is connected to the pump. After the grout has thoroughly set and the anchor bolts have been tightened, connect the discharge and suction pipes to the pump flanges with gaskets in place and tighten firmly. Make sure the pipe flanges are parallel and in line so that no piping loads are transmitted to the pump.
WEMCO DATA SHEET WEMCO TORQUE-FLOW PUMPS P10-D305A Rev. 1 8/31/01 Page 6 INSTALLATION, OPERATION & MAINTENANCE GENERAL INSTRUCTIONS
This sheet is the property of Weir Specialty Pumps, 440 West 800 South, Salt Lake City, Utah and is loaned under the express condition that it is not to be used in any manner directly or indirectly detrimental to Weir Specialty Pumps.
WARNING
ALL PUMP MODELS ARE CONSTRUCTED OF BRITTLE MATERIALS AND GREAT CARE MUST BE USED IN CONNECTING THESE FLANGES. TIGHTEN EVENLY AND ADJUST TO A SNUG FIT. UNDER NO CIRCUMSTANCES SHOULD THE CASING BE SUBJECTED TO PIPING STRAINS. SUCH STRAINS COULD RESULT IN STRUCTURAL FAILURE LEADING TO INJURY.
F. Electric Motor Drive
If the pump driver is an electric motor, a motor starter with overload protection should be provided. The overload resets should be set according to local code. Refer to the motor nameplate. Direction of rotation of the pump impeller will be indicated on the pump drawing and arrows on the case. Make motor electrical connections accordingly. Changing any two leads on a three phase motor will change the direction of motor rotation.
WARNING
ALL ELECTRICAL CONNECTIONS AND WIRING ARE TO BE IN COMPLIANCE WITH LOCAL BUILDING AND SAFETY CODES. DO NOT OPERATE EQUIPMENT WITH OPEN ELECTRICAL BOXES OR FITTINGS. CONCTACT WITH INCORRECTLY WIRED EQUIPMENT COULD RESULT IN INJURY.
WARNING
DO NOT OPERATE PUMP WITH BOTH SUCTION AND DISCHARGE VALVES CLOSED OR WITH SUCTION AND DISCHARGE CLOSED BY CLOGGING - THIS COULD CAUSE DAMAGE AND IS DANGEROUS. WEMCO PUMPS ARE TO BE USED FOR LIQUID SERVICE ONLY. EXCESSIVE PRESSURE CAN CAUSE MALFUNCTION LEADING TO INJURY. AVOID ISOLATING THE PUMP COMPLETELY BY CLOSING BOTH THE SUCTION
WEMCO DATA SHEET WEMCO TORQUE-FLOW PUMPS P10-D305A Rev. 1 8/31/01 Page 7 INSTALLATION, OPERATION & MAINTENANCE GENERAL INSTRUCTIONS
This sheet is the property of Weir Specialty Pumps, 440 West 800 South, Salt Lake City, Utah and is loaned under the express condition that it is not to be used in any manner directly or indirectly detrimental to Weir Specialty Pumps.
AND DISCHARGE VALVE AT THE SAME TIME IF THE PUMP CONTAINS A BIOLOGICALLY ACTIVE SLUDGE. DECOMPOSING SLUDGE WILL PRODUCE GAS AND IF THE GAS IS NOT VENTED OR OTHERWISE RELIEVED WITH AN APPROVED RELIEF DEVICE, A PRESSURE BUILD-UP WILL OCCUR WHICH COULD RUPTURE THE PUMP AND/OR PIPING, CAUSING POSSIBLE INJURY AND/OR PROPERTY LOSS. REFER TO THE "WATER ENVIRONMENT FEDERATION MANUAL" OF PRACTICE SM-1 FOR MORE INFORMATION ON THIS HAZARD.
VI. OPERATION
A. Before Starting
The pump is ready to start when the following have been completed: 1. All construction debris has been removed from suction well. 2. Pump baseplate is grouted and bolted to the foundation.
3. Pump and driver are correctly aligned.
4. Bearings are adequately lubricated. Grease lube bearings are
packed with grease at the factory, but oil lube bearings are shipped without oil. In all cases, refer to the Bearing Lubrication Instructions in this manual.
5. Pump has been checked for correct rotation as indicated by the
WEMCO drawing and by arrows on the pump case.
6. All rotating parts are found to turn freely by hand.
7. Suction and discharge valves are open.
8. Pump is primed. If installed with suction lift, the pump may be primed by using an ejector or vacuum pump.
9. Seal water has been provided to packing box. See Packing or
Mechanical Seal section of this manual.
10. All guards are installed.
WEMCO DATA SHEET WEMCO TORQUE-FLOW PUMPS P10-D305A Rev. 1 8/31/01 Page 8 INSTALLATION, OPERATION & MAINTENANCE GENERAL INSTRUCTIONS
This sheet is the property of Weir Specialty Pumps, 440 West 800 South, Salt Lake City, Utah and is loaned under the express condition that it is not to be used in any manner directly or indirectly detrimental to Weir Specialty Pumps.
B. Start-up
1. After the unit is aligned, the bearings lubricated, the packing or seal flush lines connected and all flanges are tightened, the suction valve may be opened. After the seal chamber is filled with liquid, jog motor to check rotation. If the rotation is incorrect, reverse any two leads on a three phase motor and recheck rotation.
A positive suction head should be provided, but if the liquid level is below the pump the pump must be primed before start-up. On start-up, an ammeter should be used on the motor to check for overload. If the unit is direct connected, the discharge valve may be throttled should the motor be overloaded. If it appears the system head is lower than rated, the impeller may be trimmed to meet the lower head (except Model C). After trimming, the impeller must be balanced before installing. If the unit is belt driven, the pump speed may be lowered to get the proper operating point. The discharge valve may be throttled to provide varying capacities, but the suction valve should remain fully open at all times during operation. If trouble is experienced upon initial or subsequent operation, refer to the Operating Problems section of this manual to diagnose and correct the defect.
WARNING
DO NOT OPERATE THE PUMP AGAINST A CLOSED DISCHARGE VALVE. DO NOT OPERATE THE PUMP UNLESS THE PUMP IS FILLED WITH LIQUID.
2. Make an additional check of alignment between the pump and
driver after a few hours of operation. Repeat this check after one week of initial run.
WARNING
WHEN CHECKING ALIGNMENT, OR PERFORMING ANY WORK ON THE UNITS, ELECTRICAL SERVICE MUST BE LOCKED OUT WITH AN APPROVED LOCKOUT AND KEY. FAILURE TO LOCKOUT EQUIPMENT MAY RESULT IN INJURY.
WEMCO DATA SHEET WEMCO TORQUE-FLOW PUMPS P10-D305A Rev. 1 8/31/01 Page 9 INSTALLATION, OPERATION & MAINTENANCE GENERAL INSTRUCTIONS
This sheet is the property of Weir Specialty Pumps, 440 West 800 South, Salt Lake City, Utah and is loaned under the express condition that it is not to be used in any manner directly or indirectly detrimental to Weir Specialty Pumps.
ALL GUARDS AND PROTECTIVE DEVICES MUST BE INSTALLED BEFORE THE PUMP IS STARTED. CONTACT WITH UNGUARDED BELTS, SHEAVES OR COUPLINGS COULD RESULT IN INJURY.
C. Shutdown
To shut the pump down, proceed as follows: 1. Disconnect the pump to the driver. 2. Close the suction and discharge valves and isolate any external
service connections the pump may have.
3. If the pump is to remain out of service for a period of time longer than two weeks, the shaft must be rotated on a weekly basis to ensure positive coating on lubricated surfaces, thus retarding or preventing rust or oxidation.
WARNING
WHEN PERFORMING EQUIPMENT MAINTENANCE OR IF THE PUMP IS TO REMAIN OUT OF SERVICE FOR A PERIOD OF TIME, THE EQUIPMENT ELECTRICAL SERVICE MUST BE LOCKED OUT WITH AN APPROVED LOCKOUT AND KEY. FAILURE TO LOCKOUT EQUIPMENT MAY RESULT IN INJURY.
D. Freezing Protection
If the pump is to be subjected to freezing temperatures it must be drained. If the case is not equipped with a drain plug, loosen the case bearing housing bolts and allow the case to drain. If a mechanical seal is involved, the seal chamber must be drained or seal damage may occur.
TECHNOLOGY
Huber RakeMax® Screen - 1 -
Operating Instructions
Huber Multi-Rake Bar Screen
RakeMax®
Huber Technology
Huber Technology, Inc. 9805 Northcross Center Ct.
Suite H Huntersville, NC 28078
Original operating instructions Version 03/07
Huber Technology
Huber RakeMax® Screen - 2 -
Translation Supplies to EEA countries require translation of the operating instructions into the language of the country of destination. Should there emerge any inconsistencies in the translation, the original (German) operating instructions shall be used for clarification or the supplier consulted.
Copyright Circulation, copying or use of this document, or disclosure of its contents, shall be prohibited unless otherwise expressly agreed. Copyright infringement will result in a liability to pay compensation for damages. All rights reserved.
Huber Technology Table of Contents
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1 PRODUCT SPECIFICATION ......................................................................................................5
1.1 Intended use................................................................................................................................5 1.2 Definition of terms for machine components ................................................................................6 1.3 Functional description..................................................................................................................7 1.4 Functional description of (partly optional) components ................................................................7 1.4.1 Level control system....................................................................................................................7 1.4.2 Detection of the position of screen rakes .....................................................................................7
2 EC CONFORMITY CERTIFICATE, CERTIFICATE OF INCORPORATION................................8
3 SAFETY ......................................................................................................................................9
3.1 General safety instructions ..........................................................................................................9 3.1.1 Operator's duty of care ................................................................................................................9 3.1.2 Definition of safety symbols .........................................................................................................9 3.1.3 Qualification and training of personnel.......................................................................................10 3.1.4 Safety instructions for maintenance, inspection, installation ......................................................10 3.1.5 Other dangers............................................................................................................................11 3.1.6 Unauthorised rebuilding and production of spare parts..............................................................11 3.2 Machine identification ................................................................................................................12 3.3 Incorporated safety systems......................................................................................................12 3.4 Safety measures........................................................................................................................13 3.5 Operator's duty of care ..............................................................................................................13 3.6 Safety tests................................................................................................................................14
4 HANDLING AND TRANSPORTING..........................................................................................15
4.1 Dimensions and weight..............................................................................................................15 4.2 Permitted transport devices and auxiliaries ...............................................................................15 4.3 Storage......................................................................................................................................16 4.4 Transport to the installation place ..............................................................................................16
5 INSTALLATION ........................................................................................................................17
5.1 Acceptable environmental conditions.........................................................................................17 5.2 Site requirements ......................................................................................................................17 5.3 General instructions for installation............................................................................................18 5.4 Assembly and installation ..........................................................................................................19 5.4.1 Mechanical installation...............................................................................................................19 5.4.2 Electrical installation ..................................................................................................................20
6 START-UP ................................................................................................................................22
6.1 Customer-supplied connections.................................................................................................22 6.1.1 Electrical connection..................................................................................................................22 6.2 Checks prior to initial start-up ....................................................................................................22
7 OPERATION .............................................................................................................................24
7.1 Control philosophy.....................................................................................................................24 7.1.1 Control panel design and equipment .........................................................................................24
8 TROUBLE SHOOTING AND REPAIR ......................................................................................25
9 MAINTENANCE AND REPAIR .................................................................................................26
9.1 Cleaning and inspection schedule .............................................................................................27 9.2 Maintenance ..............................................................................................................................27 9.2.1 Inspection of screwed connections ............................................................................................27 9.2.2 Rake maintenance.....................................................................................................................27 9.2.3 Maintenance of drive motor .......................................................................................................27 9.2.4 Maintenance schedule...............................................................................................................27 9.2.5 Chain tension.............................................................................................................................28 9.3 Spare parts, components subject to wear..................................................................................29 9.3.1 Regular tests of machines subject to ATEX – Recurring tests and permanent control...............29
10 SHUTDOWN .............................................................................................................................31
Huber Technology Table of Contents
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10.1 Temporary shutdown .................................................................................................................31 10.2 Final shutdown / Disposal ..........................................................................................................31
11 ADDITIONAL INFORMATION ..................................................................................................32
Huber Technology Product Specification
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1 Product specification
1.1 Intended use The Huber Multi-Rake Bar Screen RakeMax® is intended to separate screenings, settling and floating material.
For solids separation the machine is applied: • in wastewater treatment plants (municipal and industrial) • for industrial process and partial flows The intended use also includes: • Observance of the start-up, operation and maintenance conditions as set out in these
operating instructions • Taking foreseeable malpractice into account • Operation by skilled workers only (who are familiar with the correct procedures and know
the dangers) The machine is intended exclusively for the above specified use. Any additional use or rebuilding of the equipment without prior written approval by the manufacturer does not comply with the intended use. The manufacturer will not assume liability for consequential damage. The operator alone will bear the risk. Do not start up the machine before there has been ensured that all safety devices are completely mounted and operable, and that the plant into which the machine may be incorporated complies with the rules.
The machine is suitable to be used in areas classified as Class 1 / Division 1.
Huber Technology Product Specification
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1.2 Definition of terms for machine components Definition of terms: The Huber RakeMax is used to clean stationary bar racks.
The screen consists of the following components:
• Stationary bar rack with apron and discharge chute • Two drive chains with screen rakes • Upper chain bearing with chain wheels, drive with overload protection and drive shaft • Bottom chain bearing with chain wheels • Screen frame for channel installation The Huber RakeMax® Screen consists in a stationary bar rack mounted between the two screen frames. The bar rack is normalyl installed at an angle of 75°. The bar rack consists of individual flat bars and is cleaned by the rake when necessary. The screen rakes are fixed to the peripheral chains which can be re-tensioned via a special chain tensioning unit. The number of screen rakes depends on the amount of screenings and the specific application. The chains are driven by two chain wheels mounted on the drive shaft. Screenings are transported upwards along the apron which comes after the bar rack. A hinged wiper pushes the screenings from the rake shelf over the discharge chute into a skip or conveyor. The following drawing gives an overview of the individual machine parts.
Screen frame
Discharge chute
Drive shaft
Gear motor Wiper
Top chain bearing
Apron
Bar rack
Screen rake
Drive chain
Bottom chain bearing
Overload protection
Huber Technology Product Specification
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1.3 Functional description The Huber RakeMax® Screen is installed into the channel at an angle of approx. 75°. While the wastewater passes through the bar rack, solids are retained in the rack. The retained solids blind the screen basket surface, causing thus an additional filter effect. The screen drive starts at a defined difference in height. While the cleaning rakes, which are driven by the peripheral chains, travel upwards they transport the screenings upwards along the apron which comes after the bar rack. A hinged wiper pushes the screenings from the rake shelf over the discharge chute into a skip or conveyor, or for example into a wash press.
1.4 Functional description of (partly optional) components
1.4.1 Level control system
Since the level control system is part of the electrical switchboard and control panel, it is only part of Huber supply if the machine is ordered complete with the electrical control panel. Refer to the control philosophy supplied under Section 4 (Project Drawings) for additional details. The operator is responsible to prevent metallic dry objects from falling onto the dry plant. In explosive areas plant control must be via level control to prevent dry running of the plant.
1.4.2 Detection of the position of screen rakes
Optionally the screen can be equipped with a detection of the position of screen rakes. Whenever a rake passes the wiper, the proximity switch is activated and gives a signal to the electrical control. The screen start is caused by water level control or some customer supplied starting signal. The screen drive is running as long as the signal of the level control system continues, plus an additional run-on time, which is determined as follows: After the level control signal stops, the screen keeps running until a rake passes the wiper plus a free programmable period, until the rake reaches a preset position. This period has to be adjusted individually depending on specific site conditions. In this case, the general run-on time is not applied. The detection of the rake position can be useful for controlling a following aggregate (e.g. wash press), i.e. the following aggregate can be started after a set number of screenings discharges.
Huber Technology EC Conformity
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2 EC Conformity Certificate, Certificate of Incorporation The plant complies with the EC standards which prescribe the CE label. The EC Conformity Certificate confirms that the operable machine fulfils all relevant safety and health requirements. The EC Conformity Certificate is attached to these operating instructions as a separate sheet only if the HUBER plant is supplied as a ready-to-operate unit complete with the electrical switchboard and control panel, and if plant installation and commissioning are performed by HUBER. The Certificate of Incorporation is required if the supplied machine is not operable independently, i.e. if the machine is to be incorporated in other machines for example to obtain an operable complete plant, or if the electrical switchboard and control panel is supplied by a third party. We herewith declare that the design of the plant as supplied complies with the standards and EC directives and DIN EN standards, as far as applicable as delivery does not include the electrical switchboard and control panel. Any modification of the machine without our prior approval will invalidate this declaration. Start-up of the machine is prohibited until the complete plant is in conformity with the quoted directives. The EC Conformity Certificate / Certificate of Incorporation is attached in the appendix and is additionally included in the table of contents.
Huber Technology Safety
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3 Safety
3.1 General safety instructions These operating instructions have to remain attached to the machine. It must be made sure that the operating instructions are ready to hand any time for any person that has to perform work on the machine. In addition to these operating instructions, instructions in the sense of the labour protection law and ordinance regulating the use of tools have to be available. As these operating instructions contain fundamental instructions to be observed when installing, operating and servicing the machine, the responsible staff must read the instructions prior to machine installation and start-up. The operating instructions must at any time be available ready to hand at the installation place of the machine/plant. Not only the general safety instructions contained in this chapter have to be observed but also the special safety instructions added under the main items.
3.1.1 Operator's duty of care
The plant has been constructed and manufactured taking into consideration a risk analysis and after careful selection of the applicable harmonized standards and other technical specifications. The machine complies with the state-of-the-art technology and offers a maximum amount of safety. To achieve such safety in practical operation, it is however necessary to take any measures required therefore. It is the operator's duty of care to plan these measures and control their implementation. The operator must especially ensure that • The machine is applied according to its intended use (see chapter Product Specification) • The machine is operated only in a perfect ready-to-operate condition and especially the
safety devices are regularly controlled. • Protective gear for the operating, maintenance and repair personnel is available and used. • These operating instructions are permanently available on site complete and in a legible
condition. • Only sufficiently qualified and authorized personnel is in charge of machine operation,
maintenance and repair. • Such personnel receives regular briefing concerning all questions of safety and
environmental protection and knows these operating instructions, especially the safety instructions contained.
• Any safety and warning symbols attached to the machine remain there in a legible condition.
3.1.2 Definition of safety symbols
Occupational safety symbol This symbol will accompany all safety instructions that are associated with risks to life and/or limb. Follow these instructions and proceed carefully! At the same time, follow all applicable laws, general safety and accident prevention regulations.
Electric current warning This symbol warns of electric current. Prior to performing any work, switch off mains isolator and make sure that the system is off-circuit. At the same time, follow all applicable laws, general safety and accident prevention regulations.
Huber Technology Safety
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Be careful not to get caught when starting up, servicing or repairing the machine!
Attention symbol This symbol is found where special attention is required to ensure compliance with instructions concerning correct operating sequences to prevent damage to the machine or its function.
Attention!
Instructions directly attached to the machine, e.g. • Instructions and warning signs • Labels for liquid connections • Arrow showing the direction of rotation must be strictly followed and kept in absolutely legible condition. Signs or labels that have become illegible must be replaced immediately.
3.1.3 Qualification and training of personnel
Only well-trained and briefed persons who know these operating instructions and act according to these instructions are authorized to operate the machine. The individual areas of responsibility of operating staff must be defined clearly. The area of authority, responsibility and control of the personnel must be precisely regulated by the operator. The operator must further ensure that the personnel has fully understood these operating instructions. Personnel being trained must in the beginning work under the supervision of an experienced person. The completed successful training and briefing must be confirmed in writing. Any electrical control and safety devices must generally be operated by instructed and authorized persons only.
Any person performing work on the machine must read these operating instructions and confirm by signature that the operating instructions have been understood.
3.1.4 Safety instructions for maintenance, inspection, installation
Any maintenance work must be carried out by qualified staff only. Any inspection and installation work must be carried out by authorized and qualified staff only. Work on the plant may only be carried out after the plant has been isolated. Enclosed rooms of wastewater treatment plants that must be entered for service and maintenance have to be aerated in a way that prevents a dangerous explosive atmosphere, lack of oxygen and presence of harmful concentrations of gas or vapour.
Huber Technology Safety
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Shutdown procedure: Switch off mains isolator and lock it. Each person who is commissioned to perform maintenance work on the machine must have his own padlock. Starting the machine is only possible when all padlocks on the mains isolator have been removed.
Do not immediately re-start the machine, if the reason why it has stopped is unclear. Somebody could have stopped the machine in order to make a manual adjustment and may have forgotten to secure it against starting. The unexpected start could result in serious injury of personnel. It is in your own interest to clean the machine prior to working on it to prevent the danger of infections. Always protect yourself by means of waterproof protective gear, boots, gloves, and, if possible, also by face protection during cleaning of the machine - especially if a high pressure cleaner is being used – to avoid being hit by waste water, organic material, etc.
Before starting the machine again, check the items mentioned in chapter Start-up. Re-attach all safety equipment, covers, grates completely to their original place and assure that they are properly and completely reattached.
3.1.5 Other dangers
Other dangers are potential, non-apparent dangers. Despite all precautions taken, there are other dangers, such as: • To be caught by unintentional movements of the machine • To slip on wet or dirty ground • Danger of falling in front of or onto the machine during maintenance work • Malfunctioning control • Allergies and irritations caused by contact with waste water or screenings • Infections caused by bacteria or pollution • Explosions or fire caused by gas or fumes • Increased water passage after heavy rainfalls for example
3.1.6 Unauthorised rebuilding and production of spare parts
Alterations or changes to the machine: For safety reasons, it is not permitted to make unauthorized alterations or changes to the machine. This applies also to welding work on bearing components. Any intended modifications, alterations or changes require the prior written consent of Huber Technology. Use only original spare parts, original wearing parts and original accessories as these are especially designed for the machine. Components purchased from other sources give no guarantee that they have been designed and manufactured to suit the specific operating and safety requirements. Components purchased from other sources give no guarantee that they have been designed and manufactured to suit the specific operating and safety requirements.
Huber Technology Safety
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3.2 Machine identification Any specifications made in these operating instructions apply to only the type of machine that is named on the title page. The identification plate is attached to the screenings discharge and specifies the following. • Name and address of supplier • CE sign • Serial name and type, optionally serial number • Year of manufacture Always forward the machine type, year of manufacture and order number when inquiring or ordering spare parts to ensure perfect and prompt processing or your queries and orders.
3.3 Incorporated safety systems The incorporated safety systems are subject to regular checkups (t = daily, w = weekly, m = monthly, j = yearly). The following methods are applied: S = sight inspection, F = functional test, M = measuring.
Checkup
Interval
Method
Mains isolator The mains isolator is located on the control panel and disconnects/connects the machine from/with the mains supply. Padlock the mains isolator after switch-off prior to performing service or repair work.
j
F
Checkup
Interval
Method
Emergency cutoff circuit The machine is equipped with an emergency cutoff circuit.Whenever the emergency cutoff switch (option) is operated, the machine or complete plant including incorporated units will be set into a safe operating state. The emergency cutoff switch can be released by pulling or turning to the right..
m
F
Checkup
Interval
Method
Motor temperature control The machine is equipped with an indirect motor temperature control with overload protection. The motor of the machine is switched off in the event of too much heat built-up. The overcurrent safety device using a thermic delay must be set to disrupt the drive motor from the power system within the delay tE.
j
F, M
Checkup
Interval
Method
Plant control Internal plant control includes a 5-conductor feed system, 3 phase, with separate earth line with GREEN/YELLOW line coating. Additionally earth the machine casing for potential equalisation.
m
S, F, M
Huber Technology Safety
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These operating instructions are part of the machine and have to be available for the operating staff at any time. The safety instructions contained must be observed.
It is strictly prohibited to override any safety instructions or change the mode of action of safety instructions.
3.4 Safety measures It is the operator's responsibility to instruct his operating and servicing staff concerning: • Protective devices on the machine, • Control of observance of safety measures. This copy of operating instructions have to be stored to be at hand when needed in the future. Observe the intervals for inspection and control measures! In these operating instructions, the work is described so that it can be understood • by an instructed person (referring to chapter Operation and operation modes • by skilled staff (referring to chapters Transport, Installation, Maintenance, Trouble
Shooting and Repair). The chapters Transport, Installation, Maintenance, Trouble Shooting and Repair are intended for skilled staff only. Any work described under these chapters must be performed by skilled staff only. Instructed person An instructed person is a person that has been instructed by a skilled person, and trained if necessary, about the assigned jobs and possible risks arising from improper performance and informed about necessary protective devices and protective measures.
Skilled persons Skilled persons are persons that are able to evaluate assigned jobs and recognize possible risks, due to their professional skills, expertise and experience and knowledge of corresponding standards. This definition follows EN 60204-1.
3.5 Operator's duty of care The valid national version of the framework directive 89/391/EWG and corresponding individual directives, especially 89/655/EWG concerning minimum requirements for safety and health protection of staff when using work equipment, are applicable in EEA countries and must be observed. For Germany, the occupational safety directive of October 2002 is applicable and must be observed.
The operator has to obtain the local operating license and observe the respective requirements. In addition, the operator has to observe the local laws concerning • Safety of personnel (accident prevention regulations) • Safety of work equipment (protective gear and maintenance) • Product disposal (Waste Management Law) • Material disposal (Waste Management Law) • Cleaning (cleaning agent and disposal) • Environmental compliance
Huber Technology Safety
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Connections: The operator has to ensure before start-up of the machine, if installation and start-up are performed by the operator himself, to comply with local standards (such as for electrical connection for instance).
3.6 Safety tests Performed by the manufacturer before delivery 1. Airborne sound measurement
The noise level of the plant lies below 70 dB(A). 2. Test and checkup as per DIN EN 60204-1
(as of November 98) • Check of electrical equipment for correspondence with the technical documentation • Continuous connection of earth conductor system • Insulation resistance tests • Voltage tests • Protection against residual voltage • Functional tests
Test of functions of electrical devices, especially those relating to safety and protective measures.
Huber Technology Handling and Transporting
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4 Handling and transporting Observe the following points to avoid damage to the machine or persons when handling the equipment: • Only qualified persons are permitted to perform transport work, observing the safety
instructions. • Lifting and righting of the equipment must be done only by the lifting eyes provided. • Use only the lifting devices specified hereunder to transport the machine. • Read also the chapter General Safety Instructions.
4.1 Dimensions and weight The machine length and arrangement are adjusted to suit specific site requirements (available space, channel depth, discharge height). The dimensions and weight of the screen depends on its length and width. The dimensions and weights are specified on the manufacturers design drawings found in Section 4 - Project Drawings of the submittal. The machine is packed on a palette for trucking, and in sea-water-proof boxes for sea transport. All weights apply to machines without optional equipment.
4.2 Permitted transport devices and auxiliaries Have transport and unloading done by experienced experts only.
Fork lift or building machine of sufficient lifting capacity to handle the weight and size of the equipment, to be operated by qualified personnel only. Rope slings or straps of required load bearing capacity. Prior to unloading, remove the small parts supplied with the machine, such as supports, from the transport rack. Attachment: Hook shackle, load hook etc. into the lifting eyes on the frame. Fixing points are marked with the symbol LIFT HERE (as shown here on the right). The ropes of the lifting device must hang freely and must not be attached more than 60° from the vertical. The machine must hang horizontally during unloading.
Inspect all materials for damage before and during unloading. Any transport damage found should be noted on the bill of lading and the forwarder and manufacturer/supplier notified immediately. Make sure the delivery is complete by carefully checking all received materials against the bill of delivery.
Note!
Huber Technology Handling and Transporting
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4.3 Storage When selecting the storage place take care that the components cannot be damaged by vehicles or careless working. Make sure the components cannot get dirty due to splashes of concrete or mortar and protect the machine against spark fountains from angle grinders etc. Cover the motor (in order to avoid ingress of water) on machines stored outdoors, but do not wrap it. Never expose the control panel to rain (temperature down to - 40°C is permissible).
4.4 Transport to the installation place As there are different situations and possibilities at the individual sites, we cannot give exact installation instructions. This work must be carried out by qualified fitters.
You always need lifting equipment for transporting the machine from the intermediate storage place to the installation place because of the machine weight. As lifting equipment up to the building are used: caterpillars, power shovel, cranes etc. dependent on the access ways. Lifting equipment mostly used in a building is: Polyester slings, tripods, chain tackle block, fork lift, transport rollers, tackles. Wear safety shoes with steel caps to prevent injuries. Always stand clear off a suspended load!
Unpacking: Do not loosen the clamping bands or steel ropes before the machine is right in its installation place.
Huber Technology Installation
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5 Installation Observe the following safety instructions when installing the machine to avoid critical injuries, damage to the machine and other damage. • Only qualified persons are permitted to perform installation work, observing the safety
instructions. • Check the machine for transport damage prior to starting with any installation work. • Make sure that only authorized persons have access to the working area and that
installation work does not endanger any other persons. • When laying machine connections, make sure that no one can trip over laid cables,
hoses, pipelines, etc. • Observe the prescribed bending radii when laying cables/hoses/pipelines. • Observe the instructions for operating media, lubricants, auxiliary material used. • Read also the chapter General Safety Instructions.
5.1 Acceptable environmental conditions The machine is manufactured for installation in a building as specified by the customer. Frost protection: Machines without a casing must not be operated in winter due to the danger of freezing. Appropriate measures must be taken (e.g. complete emptying) to ensure that the machine cannot freeze. Protection against dust and water: As the atmosphere at the installation place is permanently humid, the equipment is designed to resist these conditions. All components in contact with water and solids are made of stainless steel which is insusceptible to moisture and wetness. The gear motors are made for IP 65 and are therefore protected against permeation of dust and spray water from any direction.
5.2 Site requirements Cover all channel sections which do not need to be accessible for machine installation and fix a railing along open channel sections. The regulations of DIN EN 294 “Safe distances preventing upper limbs reaching dangerous areas” and corresponding standards must be observed. There must be enough space available around the machine for repair and maintenance work. Required minimum distance to the machine or railing: 1 m (lateral, in front of and behind the machine) Emergency bypass An emergency bypass is absolutely necessary for one-line plants, such as for the event of a power failure or fault. The complete hydraulic conditions of the sewage treatment works must be taken into account for dimensioning of the emergency bypass. It is important that the emergency bypass overflow weir lies approx. 50 mm below max. water level (see installation drawing) to protect the screen. Recesses in one of the side walls of the channel are required to place the level probes 0.5 – 1.5 m in front of and behind the machine. These recesses must have a length of 150 mm and a depth of 120 mm and reach down to the channel bottom.
Huber Technology Installation
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Stop logs or penstocks must be positioned in front of and behind the machine to enable shut-off of the machine for repair. No cross section or penstock must however be positioned in the installation area of the screen. Make sure the door/gate in the building offers sufficient space to pass the machine. It is recommended to attach a IPB 140 mounting support to the ceiling, in the direction of the machine's axis. Static dimensioning of the points where the machine is supported by legs on the channel bottom and under the rising pipe on the building bottom or top of the channel must be carried out according to the weights specified in the manufacturer's data sheet.
5.3 General instructions for installation Installation must be carried out in accordance with these instructions if installation is not part of the supply contract with HUBER Technology. If installation is not performed by HUBER Technology, HUBER Technology cannot accept responsibility for incorrect offloading or installation. Installation must be performed by qualified and experienced personnel. Prior to installation: • Completely read these instructions as they contain important information how to prevent
damage caused by lack of knowledge. • Approach roads must be provided so that the machine can be installed either by means
of a crane in case of outdoor installation or by a lifting truck and rollers as well as by lifting chain block or hoist in case of installation in a building.
• Electrical power must be provided to be available on site at the installation date. Preliminary work: • If a channel cover is to be installed, mount the frame and exactly measure the cover
dimensions (see installation drawing). • If it is an installation in a building, make sure a mounting support is fitted centrally above
the machine. • Prepare sufficiently sized cable ducts for electrical installation from the control panel to
the machine and channel (cable ducts PG 36) for level control (for details see installation drawing).
• Recesses (150 x 120 mm) in the channel wall down to the channel bottom are required to place the level probes in front of and behind the machine (see installation drawing). For existing channel configurations baffle plates can be provided as cover for the level probes.
• In the installation area of the screen, cross girders, penstocks or other are not allowed. • Check if an emergency by-pass is provided in front of the screen. Take the overflow weir
height from the installation drawing. Preparatory work: • Check all assembly and fixing material making sure it is complete. • Prepare all cables according to the cable list (see wiring diagram) and all necessary small
components (e.g. air hose for level control). • Prepare lifting device that is able to lift the load during installation. • Clean the channel / installation place with a broom before installation in order to prevent
injuries caused by slipping.
Huber Technology Installation
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5.4 Assembly and installation
5.4.1 Mechanical installation
General instructions: • Fix lifting devices (2 chain hoists or similar) to the prepared installation supports over the
channel. If necessary, prepare points of suspension with required load bearing capacity and arrange in such a way that the plant can hang above the installation area without manual moving.
• Secure safety load hooks on transport eyes or rope straps to the machine and the lifting device.
Blow the holes for the stainless steel plugs under pressure after drilling (using bellows, air pump, etc.) to ensure long life of the plugs. Lubricate all screws prior to screwing them to avoid corrosion.
Note!
Installation proposal:
Transport eyes
Lateral installation angle
Rear installation angle
Front installation angle
Baffle plate
Huber Technology Installation
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Pivotable screen version Another installation possibility is to install the screen pivotable. This alternative is applied if due to the channel depth or discharge height pivoting of the screen is required. In such a case the pivot axis is supported on mounting angles that have to be bolted on the upper channel side.
5.4.2 Electrical installation
Electrical installation to be carried out by qualified electricians only. General: The following instructions are offered for guidance if installation is not included in the HUBER supply contract. If installation is not included in the supply contract, HUBER Technology cannot accept responsibility for incorrect installation. Wiring: Make sure that power supply is disconnected! Secure this condition by appropriate measures!
• Prepare earth connection to the plant prior to beginning any other work, and earth the
gear motor and solenoid valves (optional). The protection system of the terminal sockets must correspond to the protection system in which the plant has been installed. Fix the control panel with bolts in the intended position.
• Fix the adjacent control box with dowels next to / onto the machine. • Prepare all cables between the machine, control panel and adjacent control box and
connect the plant to the power supply according to the specifications in the wiring diagram. The wiring diagram and cable list are attached in the appendix, if the electrical switchboard and control panel is part of the Huber supply contract.
Rear installation angle
Additional support
Pro
S
Fbd
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Chain with rollers
Sprocket Protection ring Lip seal Slide bearing
Flange ball bearing for drive shaft
Earth conductor 6 mm³
Gear motor
Drive pin
Earth conductor 10 mm³ The earth point has to be connected with the main voltage equaliser acc. to local protective measures as per local standards (DIN, VDE, EN, Atex)
Huber Technology Start-up
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6 Start-up Observe the following safety instructions for machine start-up to avoid damage to the machine or injuries. • Only qualified persons are permitted to perform start-up work, observing the safety instructions. • Check before the first start-up that all tools and foreign objects have been removed. • Activate all safety devices and emergency cutoff switches before start-up. • Check that the proximity switch is in perfect condition. The distance between the proximity switch and impulse transmitter must be approx. 2 mm. • Check chain tension acc. to instructions given in chapter “Maintenance and repair”. • Read also the chapter General Safety Instructions.
6.1 Customer-supplied connections All customer-supplied connections must be installed on the marked positions, or at least as close as possible, according to the manufacturer's instructions respectively installation drawing.
6.1.1 Electrical connection
The electrical connections must be laid to the installation place of the control panel; Supply of 3 x 575 V with 60 Hz Provision of multi-polar cables for transmission of operation and trouble signals or any other signals to a central control plant. A sufficient number of suitably sized cable ducts must be laid unless the cables are laid on plaster (cable trays / cable channels). They must be laid from the control panel to the installation site. The position of the cable duct ends can be obtained from the installation drawing. The number of the cable ducts depends on the number of functions.
Pay attention that the cable ducts for an optional pneumatic differential level control system protrude laterally from the channel wall and must be laid in a slope to the channel. This is necessary to enable the condensed water in the air hose to run off.
Note!
1x ground, 1x screen drive, 1x limit switch, 1x adjacent control switch, min. 1x additional equipment
Check list
6.2 Checks prior to initial start-up Prior to start-up: Make yourself familiar with the • operation and control elements of the machine • machine equipment • operation principle of the machine • immediate environment of the machine • safety devices of the machine • measures to be taken in case of emergency Perform the following work prior to any start-up: • Check and make sure that all safety device are attached and in a ready-to-operate
condition.
Huber Technology Start-up
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• Check the machine for visible damage and eliminate any damage found immediately or report them to the supervisory staff, as machine operation is only permitted if the machine is in a perfect condition.
• Check and make sure that authorized persons only have access to the operation area of the machine and no other persons are endangered by starting the machine.
• Remove any objects or other material from the operation area of the machine, which is not needed for machine operation.
Remove all foreign objects from the channel that might cause operational troubles (such as pieces of wood, stones, iron, etc.). Remove also ice if this has formed due to low temperature. The screen was lubricated in the factory before dispatch as specified in the provided lubricant table. Check all lubrication points and re-lubricate them, if necessary, as described in chapter Maintenance.
The following needs to be checked prior to starting the screen: • Check the adjustment of the rake towards the bar rack and apron. • The rake tines must mesh with the rack bars without contact. • Avoid contact between the rake tines and apron. • The optimal distance between the tine points and the apron is 2-3 mm. • Check the function of the limit switches. Let the screen perform several full removal cycles and observe thoroughly if all screen functions are OK.
Check that the screw-type cable fitting fits tight and re-tighten the screw, if necessary, to prevent ingress of water into the motor. (See below picture of the screw-type cable fitting.)
Screw-type cable fitting
Huber Technology Trouble Shooting & Repair
Huber RakeMax® Screen - 24 -
7 Operation Observe the following instructions when operating the machine to avoid damage to the machine or injuries. • Never use the machine for any other purpose than the intended use! • Inform yourself about the correct behaviour in case of a fault prior to switching the
machine on. • Check prior to switching the machine on that the following units are in a ready-to-operate
condition: • Protective devices • Emergency cutoff switch
Read also the chapter General Safety Instructions.
7.1 Control philosophy The electrical control regulates all automated functions of the plant both in automatic and hand mode. After switching the mains isolator on, the plant works in automatic mode. The control panel must be installed outside the screening room. A detailed sequence of operation can be found under Section 4 (Project Drawings) of the equipment submittal.
7.1.1 Control panel design and equipment
The following description of the control units refers to the text display supplied by Huber as standard. On conventional control systems, the functions must be replaced by corresponding switches. The equipment in detail is specified in the material list of the attached wiring diagram.
Huber Technology Trouble Shooting & Repair
Huber RakeMax® Screen - 25 -
8 Trouble shooting and repair
Symptom Possible cause Repair Screen does not run although the tripped lamp is off.
Mains isolator is in OFF position.
Switch mains isolator ON.
Selector switch is in "0" position.
Turn selector switch to HAND or AUTO
Emergency stop button is pressed.
Release emergency stop button and press RESET.
Control fuse has melted.
Replace fuse.
PLC-CPU is set to STOP.
Switch to RUN.
Membrane of miniature compressor has torn.
Check if compressor is running. Pull off the hose. Check if it can blow air under pressure. Replace membrane if necessary, clean the filter. Check if air pipes are tight.
Fault lamp is lit. Or the fault is indicated in the text display.
Motor overload has tripped. a) Switch off mains isolator b) Check if: • Big solids block the rake • The rake is jammed in the
bar rack c) Run the rake upwards/back to eliminate the cause for the trouble. d) Switch on motor protection switch and operate reset key.e) Switch on mains isolator.
Limit switch of overload protection has tripped.
a) , b) , c) Ditto
Phase breakdown
a) Check fuses in control panel. b) Check preceding fuses.
Continuous operation in AUTO mode
Level control is permanently activating because: • Air escape area on
submerged pipes is blocked.
• Hose is bent • Condensed water is in the
hose.
1) Clean the recesses for submerged pipes. Switch off mains isolator before! 2) Remove the bend. 3) Blow the hose, displace it if necessary.
Time-dependent control does not work.
Time has not been set in text display or on timer .
Set a time.
Timer is defective. Repair the timer.
Huber Technology Maintenance and Repair
Huber RakeMax® Screen
9 Maintenance and Repair Enclosed rooms of wastewater treatment plants that must be entered for service and maintenance have to be aerated in a way that prevents a dangerous explosive atmosphere, lack of oxygen and presence of harmful concentrations of gas or vapour.
The contents and structure of these maintenance instructions have been made up according to DIN 31 052.
The chapter maintenance and repair is intended for skilled staff only. Any maintenance or repair work must be performed by skilled staff only. Skilled staff has to be equipped with personal protective gear (such as gloves, etc.).
Skilled persons Skilled persons are persons that are able to evaluate assigned jobs and recognize possible risks, due to their professional skills, expertise and experience and knowledge of corresponding standards. This definition follows EN 60204-1. Regular cleaning and plant maintenance is required to ensure trouble-free plant operation. Always wear protective glasses and rubber gloves if harmful materials have been processed by the machine.
The machine is subject to vibrations during operation, which may cause screw and clamp connections to get loose. To prevent damage, regularly check the machine. It is essential to proceed as described under 3.1.4 when shutting down the machine prior to performing maintenance, repair or cleaning work. Use only tools and means that are expressly intended for such work.
Observe the following instructions when performing maintenance or repair work on the machine to avoid damage to the machine or injuries. • Prior to performing any repair work, shut off a wide area around the machine. • Switch off all voltage sources and secure the voltage sources to prevent they are
unintentionally switched on again. • Never use any other than the specified operating media. • Never use any other than the spare parts specified in our spare parts lists. • Read also the chapter General Safety Instructions.
Huber Technology Maintenance and Repair
Huber RakeMax® Screen - 27 -
9.1 Cleaning and inspection schedule Weekly: • Check air injection pipes of level control (Huber standard or customer's system) and
clean the injection pipes and probes with a hose. • Remove entangled material, if any, from the bar rack. Never use a high pressure unit to clean electrical plant equipment!
9.2 Maintenance
9.2.1 Inspection of screwed connections
Check all screwed connections regularly, at least at the time of annual inspection, if they are tight. Replace all self-locking nuts that were unlocked for the purpose of maintenance or repair, otherwise used nuts may get loose and cause damage.
9.2.2 Rake maintenance
Monthly check the adjustment of the rake towards the bar rack and apron and make corrections, if necessary. The rake tines must mesh with the rack bars and slide along the apron both without direct contact. Check also the wiper function if screenings are completely removed from the rake.
9.2.3 Maintenance of drive motor
Operating media and lubricant replacement The screen is equipped with a gear motor, the technical data and required lubricant amounts of which can be taken from the attached motor data sheet. The required lubricant amount is additionally specified on the identification plate. If two amounts are specified, the first refers to the main gearing while the second refers to the intermediate gearing. Separate operating instructions for the gear motor are attached in the appendix. They include a list of permissible types of lubricant. Example: BP gearbox oil: Energol GR-XP220 Under normal operational conditions it is recommended to replace the lubricant after approx. 15000 operation hours. Independent of the operation time, lubricant replacement is recommended after 2-3 years at the latest.
9.2.4 Maintenance schedule
The screen is designed to minimise maintenance even under difficult operation conditions. Individual units for which no specification is provided are lubricated for life. Do not replace mineral by synthetic lubricants as synthetic lubricants may affect sealings and surface protections.
Huber Technology Maintenance and Repair
Huber RakeMax® Screen - 28 -
9.2.5 Chain tension
In our factory the chain is tightened in a way that the chain bears on the rear chain track. If the chain is tightened too much, it moves away from the chain track towards the sprocket.
Correct chain tension
Wrong chain tension
As the chain may elongate during operation, chain tension has to be checked quarterly, if necessary the chain has to be tightened. For tightening release the screws of the chain tension device on both sides of the screen frame. Retighten the nuts on the threaded rods on both sides, make sure that the chain still bears on the rear chain track.
Tighten the chain in small steps! Do never tighten the chain too much!
Huber Technology Maintenance and Repair
Huber RakeMax® Screen - 29 -
9.3 Spare parts, components subject to wear Long life and corrosion resistance against all municipal and most industrial sorts of wastewater as all components which are in contact with water are completely made of stainless steel, acid-treated in a pickling bath and passivated. b) Wearing parts Our guarantee does not include wearing parts that are subject to natural wear during opera-tion. Wearing parts are defined as parts that show increased wear due to their function, the degree of wear depending on operational conditions, running hours and plant maintenance. Main wearing parts of the plant: Bottom chain bearing Wiper plate Screen rake b) Spare parts For other spare parts such as gear motor, solenoid valve, etc. see appendix. Whenever you order spare parts please specify: Machine type Size Order number = machine number Year of manufacture Operational voltage of the corresponding electrical component Order no. from the spare part list (appendix) Required quantity Delivery address
9.3.1 Regular tests of machines subject to ATEX – Recurring tests and permanent control
The regular tests for maintenance of the plant's nominal condition shall include after every 4500 operation hours, at least however after 3 years, checkup of the components listed below. Replace the components, if they show signs of an unacceptable operating condition.
Operation hours
Interval Subject Recommended method
4500 3 years Operating condition: Bottom chain bearing
Check for play (using a lever) Uniform screen run
4500 3 years Operating condition: Drive shaft
Check flange bearings for wear
There is a danger of burning in the area of the drive motors.
Additionally observe the separate operating instructions for electro motors, drives and bearings for maintenance.
Huber Technology Maintenance and Repair
Huber RakeMax® Screen - 30 -
Repair or extensive maintenance work on machines with ex protection should be performed in a separate room on the dismounted machine.
Huber Technology Shutdown
Huber RakeMax® Screen - 31 -
10 Shutdown Observe the following safety instructions for machine shutdowns to avoid damage to the machine, injuries or environmental damage. • Qualified staff only is authorized to carry out shutdowns. • Contact the manufacturer for questions concerning disposal of the machine. • Take care of environmentally-friendly disposal of operating media, lubricants and
auxiliary material (e.g. gearbox oil). Observe the regulations for eco-friendly waste disposal!
• Lifting and righting of the equipment must be done only by the lifting eyes provided. • Use only the lifting devices specified hereunder to transport the machine. • Read also the chapter Transport. • Read also the chapter General Safety Instructions.
10.1 Temporary shutdown • Clean the screen with a high-pressure unit prior to a longer shutdown. • If the machine is installed outdoors the motor should be covered (in order to avoid ingress
of water) but not wrapped. • It is recommended to change the gearbox oil prior to start-up after a several-year
shutdown. Further conservation is not necessary.
10.2 Final shutdown / Disposal Qualified staff only is authorized to perform electrical and mechanical shutdowns. Prior to a final shutdown, follow the instructions for a temporary shutdown and the following additional instructions:
• Drain the gearbox oil. Disposal of gearbox oil: Observe the regulations for eco-friendly
waste disposal!
Huber Technology Additional Information
Huber RakeMax® Screen - 32 -
11 Additional information If you require more information, please write or phone. We will do our best to support you. Our headquarters:
Huber Technology, Inc. 9805 NorthCross Center Court Suite H Huntersville, NC 28078
Phone: 704-949-1010 Fax: 704-949-1020 E-mail [email protected]
Our customer service:
Phone: 704-949-1015 E-mail [email protected]
We will help you to quickly find the right specialist to answer your questions. Or visit our website http://www.huber-technology.net providing up-to-date information concerning our Business Unit Service. Our service comprises preventive maintenance, routine servicing, short-term repair. Our service hotline is available 24 hours a day, 7 days a week. Our qualified team offers a customer-oriented and reliable service, including: expert support, information and briefing of operating staff • Installation and start-up • Expert support, information and briefing of operating staff • Regular servicing • Optimization of plant operation • Maintenance of machine performance • Repair and standard spare parts within 48 hours These additional services guarantee reliable plant operation, which is an important aspect for both municipal and industrial applications, and will help you to meet the requirements within your area of responsibility.
HUBER Technology, Inc. Huntersville, NC
A member of the HUBER Group
SPARE PARTS DRAWING AND PARTS LIST
001 Kettenrad MC112 sprocket wheel w
002 Skt.-Schraube DIN 933 hexagon head screw s
003 Scheibe DIN 125 washer s
004 Skt.-Mutter DIN 934 hexagonal nut s
005 Kette MC112 chain w
006 Aufnahmezapfen journal pin w 10000
007 Zylinderschraube DIN 912 cylinder head screw s
008 Schleißring shell case w 10000
009 Scheibe disc s
010 Scheibe disc s
011 Schutzring PE guard ring PE w 10000
012 Skt.-Schraube DIN 933 hexagon head screw s
013 Scheibe DIN 125 washer s
014 Harkenträger beam for rake s
015 Skt.-Schraube DIN 933 hexagon head screw s
016 Zylinderschraube DIN 912 cylinder head screw s
017 Scheibe DIN 125 washer s
018 Skt.-Mutter DIN 934 hexagonal nut s
X 019 Harke rake w
020 Flachrundschraube DIN 603 truss head screw s
021 Scheibe DIN 9021 washer s
022 Stabrostfeld rack screen field s
023 Skt.-Schraube DIN 933 hexagon head screw s
024 Scheibe DIN 9021 washer s
025 Lagerzapfen Abstreifer journal pin for scraper s
026 Scheibe DIN 9021 washer s
027 Skt.-Schraube DIN 933 hexagon head screw s
028 Skt.-Mutter DIN 985 hexagonal nut s
X 029 Abstreiferplatte scraper plate w
030 Flachrundschraube DIN 603 truss head screw s
032 Getriebemotor geared engine s
spare and wear parts
HUBER RakeMax® Screen
Wearing parts are parts that are subject to increased wear due totheir specific function. Such wear depends to a great extent on:
- Application conditions (such as an increased grit rate, or abrasive materials)- Running hours- Maintenance
Ersatzteil / spare part: s Verschleißteil / wear part: w
recommended 2 years
recommended 5 years
operating time (Std / hours)
descriptionPos
item
Hans Huber AGMaschinen- und AnlagenbauIndustriepark Erasbach A1D-92334 BerchingTel. 08462 / 201 - 0Fax.08462 / 201 - 810 RakeMax
Ersatzteil / spare part: s Verschleißteil / wear part: w
recommended 2 years
recommended 5 years
operating time (Std / hours)
descriptionPos
item
033 Passfeder DIN 6885 adjusting spring s
035 Flanschlager flange bearing s
042 Näherungsschalter proximity switch s
045 Bügelgriff handle s
046 Deckel für Bügelgriff cover for handle s
047 Drehriegel hasp s
048 Schlüssel für Drehriegel key for hasp s
049 Gerinneabdichtung sealing strip s
050*² Tellerfeder DIN 2093 cup spring s
051*² Faltenbalg bellows s
052*² Schlauchbinder hose clip s
200 Ergänzungskette (Baugrößen abhängig) additional chain (depending on the size) w
*² spare parts only for basic version
Hans Huber AGMaschinen- und AnlagenbauIndustriepark Erasbach A1D-92334 BerchingTel. 08462 / 201 - 0Fax.08462 / 201 - 810 RakeMax
HUBER Technology, Inc. Huntersville, NC
A member of the HUBER Group
CHAIN, SPROCKET & RAKE
Additional Information Page 3
Additional Information Page 4
Specification for hollow pin chain in accordance to
used in the HUBER Multi Rake bar screen RakeMax
Breaking load for stainless steel chain: 83 kN
Material for stainless steel chain: Bushes: stainless steel 1.4122 (similar to AISI 440), vacuum quenched and
tempered Pins: stainless steel 1.4122 (similar to AISI 440), vacuum quenched and
tempered Side bars: stainless steel 1.4571 (similar to AISI 316Ti) with min. tensile strength
of 520 N/mm²
Material roller: Polyamide, PA6
Additional Information Page 5
HUBER Technology, Inc. Huntersville, NC
A member of the HUBER Group
(Intentionally Left Blank)
Additional Information Page 6
HUBER Technology, Inc. Huntersville, NC
A member of the HUBER Group
EQUIPMENT MAINTENANCE & INSTALLATION DETAILS
Additional Information Page 7
HUBER Multi-Rake Bar Screen RakeMax®
Drive shaft with gearwheel
(two-part) gearwheel
drive chain
rake (bolted) wiper blade
drive shaft
chain guiding rails
magazine (rake magazine)
Additional Information Page 8
HUBER Multi-Rake Bar Screen RakeMax®
Adjusting the drive shaft
tensioning unit for drive shaft (chain tensioning)
flange bearing (drive shaft)
protective cover
Additional Information Page 9
HUBER Multi-Rake Bar Screen RakeMax®
Disassembling the motor supports
gear motor gear motor supports
terminal box frame
Additional Information Page 10
HUBER Multi-Rake Bar Screen RakeMax®
Disassembling the drive chain
retainer ring chain link plastic rollers
Additional Information Page 11
HUBER Multi-Rake Bar Screen RakeMax®
Disassembly of the drive chain
opening to enable chain disassembly
frame chain link plastic rollers
Additional Information Page 12
HUBER Multi-Rake Bar Screen RakeMax®
Disassembling the drive chain
opening to enable chain disassembly Kette
frame chain drive chain guiding rails
frame enforcement
Additional Information Page 13
HUBER Multi-Rake Bar Screen RakeMax®
Disassembling the bottom bearing with
gearwheel
bottom frame part
rake magazine
rake gearwheel (2-part)
gearwheel mounting flange
bearing chain guiding rail
chain bar rack
Additional Information Page 14
HUBER Multi-Rake Bar Screen RakeMax®
Disassembling the bottom bearing with gearwheel
frame plastic rollers
drive chain
gearwheel (2-part)
rake magazine
gearwheel mounting flange
chain guiding rail
Additional Information Page 15
HUBER Multi-Rake Bar Screen RakeMax®
Disassembling the bottom bearing with gearwheel
rake magazine rake bar rack protective sleeve gearwheel drive chain
Additional Information Page 16
HUBER Multi-Rake Bar Screen RakeMax®
Gearwheel
gearwheel hexagon screw tack-welded on the back
Additional Information Page 17
HUBER Multi-Rake Bar Screen RakeMax®
Assembling the bottom bearing
rake magazine rake gearwheel mounting flange bearing drive chain frame
Additional Information Page 18
Assembly of a HUBER RakeMax®
Assembling the bearing (chain wheel bearing)
bearing
Additional Information Page 19
Assembly of a HUBER RakeMax®
Assembling the bearing (chain wheel bearing)
fixing plate to be screwed to the base frame
screws for pin fixing bearing
Additional Information Page 20
Assembly of a HUBER RakeMax®
Spacers
spacers (for bearing adjustment)
Additional Information Page 21
Assembly of a HUBER RakeMax®
Assembling the bearing (chain wheel bearing)
screw-on plate plastic spacer bearing stainless steel spacer
Additional Information Page 22
Assembly of a HUBER RakeMax®
Assembling the bearing (chain wheel bearing)
bearing / chain wheel fixing
screw-on plate round fixing plate plastic spacers
Additional Information Page 23
Assembly of a HUBER RakeMax®
Mounting the bearing to the base frame
bar rack chain guiding tracks base frame chain wheel bearing
fixing plate
Additional Information Page 24
Assembly of a HUBER RakeMax®
View of RakeMax inlet end
base frame chain guiding tracks bearing fixing plate bar rack
Additional Information Page 25
Assembly of a HUBER RakeMax®
Chain installation
base frame chain tensioning unit
chain guiding tracks
driving shaft drive wheels
Additional Information Page 26
Assembly of a HUBER RakeMax®
Chain extension
locking ring plastic rollers
Additional Information Page 27
Assembly of a HUBER RakeMax®
Chain installation
chain guiding tracks chain base frame bar rack chain guiding tracks
Additional Information Page 28
Assembly of a HUBER RakeMax®
Chain installation
chain driving shaft chain tensioning unit
sprockets base frame chain
Additional Information Page 29
Assembly of a HUBER RakeMax®
Rake installation
rake base frame chain
Additional Information Page 30
HUBER RakeMax Installation
RakeMax installation on WWTP
Additional Information Page 31
HUBER RakeMax Installation
RakeMax installation on WWTP
Additional Information Page 32