201HT-0512240-Undercounter Dishwasher - Installation Manual With Service Replacement Parts

Installation Manual with Service Replacement Parts

Issue Date: 8.1.08

Manual P/N 0512240 rev. DFor machines beginning with S/N W11948 and above

Dishwasher serial no.

www.moyerdiebellimited.com

UndercounterDishwashers(with pumped final rinse)

Models:

201HT High temperature w/booster 201HTN High temperature w/o booster201LT Low temperature chemical sanitizing

401HT High temperature w/booster401HTN High temperature w/o booster

501HT High temperature w/booster 501HTN High temperature w/o booster501LT Low temperature chemical sanitizing

501HT

Printed in USA

201HT

401HT

2674 N. Service Road, Jordan Station Ontario, Canada L0R 1S0905/562-4195 Fax: 905/562-4618 Toll-free: 800.263.5798

P.O. Box 4183Winston-Salem, NC 27115336/661-1992 Fax: 336/661-1660 Toll-free: 800.858.4477

COPYRIGHT © 2008 All rights reserved Printed in the USA

For future reference, record your dishwasher information in the box below.

Model Number__________________________ Serial Number_______________________

Voltage________________Hertz_____________ Phase__________________

Service Service Agent __________________________________ Tel:______________________

Moyer Diebel Parts Distributor _________________________________ Tel:______________________

ATTENTION: The dishwasher model no., serial no., volt-age, Hz and phase are needed to identify your machine and to answer questions.

Please have this information on-hand if you call for service assistance.

We support

Toll-free: 800/ 263-5798Tel: 905/ 562-4195 Fax: 905/ 562-4618 email: [email protected]

The dishwasher data plateis located on the left front corner of the front access panel.

Toll-free: 800/ 858-4477Tel: 336/661-1992 Fax: 336/ 661-1660 email: [email protected]

National Service Department -USANational Service Department - Canada

NO POSTAGENECESSARY

IF MAILED IN THE

UNITED STATES

BUSINESS REPLY MAILFIRST-CLASS MAIL PERMIT NO. 2101 WINSTON-SALEM, NC

POSTAGE WILL BE PAID BY ADDRESSEE

MOYER DIEBELPO BOX 4183WINSTON-SALEM, NC 27119-0981

ATTENTION:Complete the back of the POSTAGE PAID WARRANTY CARD below, then cut along the dashed lines and mail immediately to make sure that your machine warranty is validated.USE CANADIAN WARRANTY CARD IN CANADA AND USA WARRANTY CARD IN THE UNITED STATES.

IMPORTANT IMPORTANT

Model Serial #

Date of Installation:

Company Name:

Telephone #: ( ) ---Contact:

Address:

Address:

Telephone #:

Contact:

Installation Company:

(Street) State or Province Zip Code

This Card Must Be Returned to Validate Machine Warranty:

WARRANTY REGISTRATION CARD

IMPORTANT IMPORTANT

Model Serial #

Date of Installation:

Company Name:

Telephone #: ( ) ---Contact:

Address:

Address:

Telephone #:

Contact:

Installation Company:

(Street) State or Province Zip Code

This Card Must Be Returned to Validate Machine Warranty:

WARRANTY REGISTRATION CARD

i

Revision Revised Serial Number Revision Date Pages Effectivity Description 09.15.06 All W11948 Releasedfirstedition

3.22.07 59 W11948 RevisedSchematic 71 SolidStateTimerService

11.26.07 iii,3-6,28-29, W14326 Installation,schematics 30-31,32-33, MTB,Boosterinterlock 61-66 2KWwashtankHeater

12.1.07 32-33 W14478 Boostercontrolthermostat P/Nchangedfrom109069 to0512108

8.1.08 All W14326 Releasedrev.Dofmanual

RevisionHistory

Revision History

● The Revision History contains part number changes, new instructions, or information that was unavailable prior to printing.

●We reserve the right to make changes to this manual without notice and without incurring any liability by making the changes..

●Dishwasher owners may request a revised manual, at no charge, by calling (1-800) 263-5798 in Canada or (1-800) 858-4477 in the USA.

ii

Model Descriptions __ ________

201-HT, 401-HT, and 501-HT ModelsPumped final rinse high temperature sanitizing dishwasherwith built-in 40°F rise stainless steel electric booster. Single Phase to Three Phase Field Conversion.

201-HTN, 401-HTN, and 501-HTN ModelsPumped final rinse high temperature sanitizing dishwasherwithout built-in 40°F rise stainless steel electric booster.

201-LT, 501-LT ModelPumped final rinse low temperature chemical sanitizing dishwasherwith 3 built-in chemical dispensing pumps.

Optional Equipment

70°F rise built-in stainless steel electric booster1-RDT rack stand17" dishwasher stand

ModelDescriptions

NOTE:The customer is responsible for supplying the proper incoming

water temperature to the dishwasher. The temperature must be measured at the dishwasher

iii

Undercounter Dishwashers Series: 201, 401, and 501

Revisions to this manual ______________________________________________ iLimited Warranty ____________________________________________________ iv

Installation Guide _______________________________________________ 1 Unpack and Place ...................................................... 1 Electrical Connections................................................ 3 Water Connections ..................................................... 8 Drain Connections...................................................... 9

Initial Start-up ___________________________________________ 11

Operation _______________________________________________________ 17 Operation ................................................................... 17 Cleaning ..................................................................... 19 Maintenance............................................................... 22

Troubleshooting _________________________________________ 23

Service Replacement Parts ________________________________ 25

Electrical Schematics _____________________________________ 56

Timer Charts ____________________________________________ 64

Basic Service ____________________________________________ 65

Table of Contents

TableofContents

iv

LimitedWarranty

iii

LIMITED WARRANTY

Limited WarrantyMoyer Diebel, P.O. Box 4183, Winston-Salem, North Carolina 27115, and P. O. Box 301, 2674 North ServiceRoad, Jordan Station, Ontario, Canada L0R 1S0 warrants machines, and parts, as set out below.

Warranty of Machines: Moyer Diebel warrants all new machines of its manufacture bearing the name“Moyer Diebel” and installed within the United States and Canada to be free from defects in material and workman-ship for a period of one (1) year after the date of installation or fifteen (15) months after the date of shipment byMoyer Diebel, whichever occurs first. [See below for special provisions relating to Model Series DF and SW.] Thewarranty registration card must be returned to Moyer Diebel within ten (10) days after installation. If warranty cardis not returned to Moyer Diebel within such period, the warranty will expire after one year from the date of ship-ment.

Moyer Diebel will not assume any responsibility for extra costs for installation in any area where there arejurisdictional problems with local trades or unions.

If a defect in workmanship or material is found to exist within the warranty period, Moyer Diebel, at its elec-tion, will either repair or replace the defective machine or accept return of the machine for full credit; provided,however, as to Model Series DF and SW, Moyer Diebel’s obligation with respect to labor associated with any re-pairs shall end (a) 120 days after shipment, or (b) 90 days after installation, whichever occurs first. In the event thatMoyer Diebel elects to repair, the labor and work to be performed in connection with the warranty shall be doneduring regular working hours by a Moyer Diebel authorized service technician. Defective parts become the propertyof Moyer Diebel. Use of replacement parts not authorized by Moyer Diebel will relieve Moyer Diebel of all furtherliability in connection with its warranty. In no event will Moyer Diebel’s warranty obligation exceed MoyerDiebel’s charge for the machine. The following are not covered by Moyer Diebel’s warranty:

a. Lighting of gas pilots or burners.b. Cleaning of gas lines.c. Replacement of fuses or resetting of overload breakers.d. Adjustment of thermostats.e. Adjustment of clutches.f. Opening or closing of utility supply valves or switching of electrical supply current.g. Adjustments to chemical dispensing equipment.h. Cleaning of valves, strainers, screens, nozzles, or spray pipes.i. Performance of regular maintenance and cleaning as outlined in operator’s guide.j. Damages resulting from water conditions, accidents, alterations, improper use, abuse,

tampering, improper installation, or failure to follow maintenance and operation procedures.

Examples of the defects not covered by warranty include, but are not limited to: (1) Damage to the exterior orinterior finish as a result of the above, (2) Use with utility service other than that designated on the ratingplate, (3) Improper connection to utility service, (4) Inadequate or excessive water pressure, (5) Corrosionfrom chemicals dispensed in excess of recommended concentrations, (6) Failure of electrical components dueto connection of chemical dispensing equipment installed by others, (7) Leaks or damage resulting from suchleaks caused by the installer, including those at machine table connections or by connection of chemical dis-pensing equipment installed by others, (8) Failure to comply with local building codes, (9) Damage caused bylabor dispute.

Warranty of Parts: Moyer Diebel warrants all new machine parts produced or authorized by Moyer Diebel to befree from defects in material and workmanship for a period of 90 days from date of invoice. If any defect in mate-rial and workmanship is found to exist within the warranty period Moyer Diebel will replace the defective part with-out charge.

DISCLAIMER OF WARRANTIES AND LIMITATIONS OF LIABILITY. MOYER DIEBEL’S WARANTYIS ONLY TO THE EXTENT REFLECTED ABOVE. CHAMPION MAKES NO OTHER WARRANTIES,EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED, TO ANY WARRANTY OFMERCHANTABILITY, OR FITNESS OF PURPOSE. MOYER DIEBEL SHALL NOT BE LIABLE FORINCIDENTAL OR CONSEQUENTIAL DAMAGES. THE REMEDIES SET OUT ABOVE ARETHE EXCLUSIVE REMEDIES FOR ANY DEFECTS FOUND TO EXIST IN MOYER DIEBELDISHWASHING MACHINES AND MOYER DIEBEL PARTS, AND ALL OTHER REMEDIES ARE EX-CLUDED, INCLUDING ANY LIABILITY FOR INCIDENTALS OR CONSEQUENTIAL DAMAGES.

Moyer Diebel does not authorize any other person, including persons who deal in Moyer Diebel DishwashingMachines to change this warranty or create any other obligation in connection with Moyer Diebel DishwashingMachines.

1

Unpack and Place

Installation Guide

Unpack and Place

Unpack the DishwasherNOTE:The installation of your dishwasher must be performed by qualified service personnel. Problems due to improper installation are not covered by the Warranty.

1. Inspect the outside of the dishwasher carton for signs of damage.

2. Remove the shipping box and inspect the dishwasher for damage.

CAUTION:Be careful when lifting and moving the dishwasher to prevent damage to the machine.

3. Check your packing list and identify the accessories shipped with your dishwasher. Immediately report missing items to your dealer.

4. Turn to the front of this manual and complete the warranty card. Mail the card at once.

5. Move the dishwasher near its permanent location.

Place the Dishwasher

CAUTION:Be careful when lifting and moving the dishwasher to prevent damage to the machine.

NOTE:The installation of the dishwasher must comply with local health codes.

2

Unpack and Place

Place the Dishwasher (continued)

1. Your dishwasher can be installed free-standing or under a counter-top.

2. Typical counter-top height is 34". Refer to the illustration below.

Countertop

Wall

3" Minimum WallClearance

34"Minimum

Height

FloorChemical Supply

Containers

Typical Undercounter Installation

Installation Guide Unpack and Place

3. Counter installations must provide storage space for the dishwasher's chemical supply containers. Container height must not exceed 10" above the floor.

4. Chemical supply containers must be placed as close as possible to the side of the dishwasher.

5. Check that the floor is level at the permanent location.

6. The dishwasher has 4 adjustable feet for leveling.

7. Level the dishwasher front to back and side to side.

8. Your dishwasher is ready for the utility connections.

3

Electrical Connections

Installation GuideElectrical Connections

For dishwashers built prior to S/N 14326

1. Refer to the connection diagrams above. Models 201HTN /LT, 401HTN, 501HTN /LT are equipped with a 4 ft. power cord/plug. They require a 115VAC,15A receptacle only.

Models 201 HT, 401HT, and 501HT 1 PH machines require a 3-wire plus ground supply which includes a current carrying neutral.

Models 201 HT, 401HT, and 501HT 3 PH machines require a 4-wire plus ground supply which includes a current carrying neutral.

2. Power connections are made at the Main Terminal Block (MTB) which is located at the lower right-hand side of the dishwasher directly behind the lower front access panel.

3. Remove the MTB cover and 2 screws holding the MTB to the machine base. Then, pull the MTB up and forward to make the electrical connections.

4. Provide a 3 ft. service loop in the supply cable for machine servicing.

5. Re-install the MTB and the lower front access panel to complete the installation.

WARNING: Electrocution or serious injury may result when working on an energized circuit. Disconnect power at the main breaker or service disconnect switch before working on the circuit. Lock-out and tag the breaker to indicate that work is being performed on the circuit.

L1 L3L2 N

208-230VAC

208-230VAC

208-230VAC

115 VAC

L1 L2 N

208-230VAC

115VAC

L1 L2

115VAC15A

4 ft. power cord w/plug supplied

Model 201HTN / LT, 401HTN, 501HTN /LT All S/N's

Model 201HT, 401HT, 501HT Prior to S/N 14326

Main Terminal Block (MTB) (shown pulled out of dishwasher front

to wire main incoming power)

4


Installation Guide Electrical Connections For Model 201HT, 401HT, 501HT dishwashers beginning with S/N 14326 and above


Refer to the connection diagrams on the next page for wiring instructions.

ATTENTION A qualified electrician must connect the main incoming power to the dishwasher in accordance with all local codes and regulations or in the absence of local codes

in accordance with the National Electrical Code.

Note: Models 201 HTN, 201LT, 401HTN, 501HTN, 501LT are equipped with a 4 ft. power cord and plug. These models only require a 115VAC,15A receptacle.

Main Power Connections 1. Power connections are made at the Main Terminal Block (MTB) which is located at the lower right-hand side of the dishwasher directly behind the lower front access panel. 2. Remove the MTB cover and 2 screws holding the MTB to the machine base. Then, pull the MTB up and forward to make the electrical connections. 3. Provide a 3 ft. service loop in the supply cable for machine servicing. 4. Re-install the MTB and the lower front access panel to complete the installation.

Main Terminal Block (MTB) (shown pulled out of dishwasher front

to wire main incoming power)

5


L1 L2 L3 N

208-230VAC

208-230VAC

208-230 VAC

115VAC

GRD

(For machines beginning with S/N 14326 and above)

THREE PHASE POWER CONNECTIONModel 201HT, 401HT, 501HT

HOW TO CONNECT 3 PHASE POWER1. Check the data plate on the front of the

dishwasher for the phase of the machine.

.

2. Remove the lower access panel.

3. Pull power connection box forward and out.

4. The Main Terminal Block has terminals for L1, L2, L3, Neutral and Ground.

5. Connect ground, then connect L1, L2, L3 to 208-230VAC. 6. Connect a current carrying neutral to N.

7. Main power connections are complete.

If the data plate says the machine is 3 Phase, then connect a 3 PH power supply.

Electrical Connections (continued) For Models 201HT, 401HT, and 501HT beginning with S/N 14326 and above

Refer to the connection diagrams below to connect main incoming power to the dishwasher.

6


1 Phase to 3 Phase Field Conversion Models 201HT, 401HT, 501HT

Dishwashers shipped from the factory wired for 1 phase operation can be changed to 3 phase operation by following the procedure below.

1. Disconnect the main incoming power at the main service disconnect breaker or switch.

2. Remove the lower front access panel, and the Main Terminal Block (MTB) cover.

3. Remove the booster heater element cover.

4. Locate the 1H3 booster heater wire stored on the right-side of the booster tank.

5. Disconnect the existing booster heater wires and change the booster heater element jumpers as shown in the illustration below.

6. Connect wires 1H1, 1H2, and 1H3 as shown.

7. Re-install the booster heater cover.

8. Locate the 3 phase data plate that is stored behind the lower front access panel and replace the existing 1 phase data plate with the 3 phase data plate.

9. A qualified electrician should connect a new 3 phase power service to the dishwasher.

Booter Heater/Wash Tank Heater Interlock Circuit Models 201HT, 401HT, 201HTRefer to the illustration on the next page. The booster heater/wash tank heater interlock circuit removes power from the wash tank heater whenever the booster heater contactor energizes.


Installation Guide Electrical Connections (continued) For Model 201HT, 401HT, 501HT dishwashers beginning with S/N 14326 and above.

7

To wash tank heater115VAC

From main terminal block115 VAC

From main terminal block1 PH208-230VAC

No powerwhen boosterheater isconnected for1 PH

No power when boosterheater is connected for 1 PH

L1

L3

L1N

L2

To booster heater1 PH 208-230VAC1H2

1H31H1

Auxiliary Contactor

Booster HeaterContactor

To booster heater contactor

1PH208-230VAC

ToAuxiliaryContactor115VAC



L1 L2 L3 N

Main Terminal Block (MTB)

1H1 1H2

1H3

Booster HeaterConnected for 1PH

1H1

Booster HeaterConnected for 3PH

1H21H3

Wire notconnected


Installation GuideElectrical Connections (continued)

For Model 201HT, 401HT, 501HT dishwashers beginning with S/N 14326 and above.

8

Installation Guide Water Connections

Water Connection – All Models

NOTE:Plumbing connections must comply with local plumbing and sanitary codes.

NOTE:Route the flexible fill hose in a manner that prevents kinks.

1. All models have a 6 ft. flexible hot water fill hose with a 3/4" female garden hose connector.

2. A 1/2" or larger shut off valve should be installed upstream from the dishwasher.

3. All models have a built-in flow control. The incoming hot water supply must supply between 25-95psi flowing pressure.

4. The hot water supply must provide a minimum of 140°F, measured at the dishwasher for the 40°F rise booster. For the 70°F rise booster the hot water supply must provide a minimum of 110°F measured at the dishwasher.

5. The incoming hot water supply line must be a 1/2" or larger supply line. A 3/4" line is recomended.

Water Connections

9

Installation GuideDrain Connection

Drain Connection

1. All models have a 6 ft., 5/8" I.D. drain hose. Maximum drain hose height is 3 ft. with a recommended height of 17" above the floor. Do not extend the drain hose.

2. The drain hose is located on the right rear of the machine. A 5/8" hose barb -3/4" NPT adapter fitting is strapped to the end of the drain hose for the drain connection.

3. The maximum drain flow is 15 gpm.

NOTE:The dishwasher drains in 8 seconds and drain water exits the hose with considerable force.

NOTE:Do not connect the drain hose to a disposer. The dishwasher will not drain correctly.

4. The drain hose is clamped to the rear of the machine to provide a goose neck bend. DO NOT remove this clamp.

5. Connect the drain hose to a wye fitting installed in the house drain. DO NOT connect to a tee fitting.

6. Do not kink the drain hose.

Drain Connections

10

This Page Intentionally Left Blank

Blank Page

11

Initial Start-Up

Installation Guide Initial Start-Up All Models

1. Remove any protective film from dishwasher. Check the interior for foreign material.

2. Confirm that all utility connections are complete and that the dishwasher is in its permanent location.

3. Inspect the flexible drain hose and hot water fill hose to ensure they are not kinked.

4. Check the chemical supply containers to ensure they are full.

5. Check the spray arms are in place and that they spin freely.

6. Fully close the dishwasher door.

7. Turn hot water supply on and check for leaks.

Install Scrap Screen

12

Initial Start-Up

Installation Guide

Initial Start-Up

Models: 201HT, 401HT, 501HT only

ATTENTION: The Dishwasher’s built-in booster heater was drained prior to shipment. The booster must be filled before operating the dishwasher.

Booster Service SwitchThe booster is filled with the booster service switch. It is located behind the lower front access panel on the left center of the machine.

To Fill the Booster: 1. Remove the lower front access panel.

2. Locate the booster service switch and note the 3 switch positions indicated on the switch label.

3. Turn the main power supply on. Verify correct voltage at MTB. 4. Press and hold the booster service switch down to fill the booster. 5. Continue to hold the switch down until you hear the water flowing

in the wash tank. 6. Release the switch, then flip the switch up to the ON position.

The dishwasher is ready for operation.

Booster Service Switch Push and Hold to Fill

13

Installation GuideInitial Start-Up

Booster Service Switch (continued)

7. Push the dishwasher POWER switch up to the ON position. The POWER switch illuminates and the machine fills with water.

8. Press and hold the green START SWITCH for 1-second. (Silver button for Model 510HT).9. Release the START switch. The dishwasher starts and the green cycle light illuminates.

10. Check the temperature gauge to confirm that it displays the correct incoming hot water temperature. This make take several minutes for the wash tank to reach temperature.

11. When the dishwasher stops, push the POWER switch down to the OFF/DRAIN position. The green cycle light illuminates as the dishwasher begins the drain cycle.

12. The green cycle light goes out when the machine has drained completely.

13. The initial start-up is complete.

Proper Water Fill Line

Push Power Switch to ON

Check Wash Water Temperature Gauge Model 201/HTN, 401HT/HTN, 501HTN)

Initial Start-Up

14

Installation Guide Chemical Dispensers

1. All models come equipped with a built-in detergent dispensing pump and a rinse-aid dispensing pump.The pumps are located behind the lower front access panel.

2. Each pump is equipped with a pick-up tube and 6 ft. of pick-up supply tubing.

3. Pick-up tubes are marked detergent and rinse-aid. Make sure the pick-up tubes are placed in the correct chemical supply container (chemicals supplied by others).

4. The detergent dispenser requires a non-chlorinated liquid detergent; the chemical supplier should specify the correct type of rinse-aid liquid for the rinse-aid dispenser. Your chemical supplier must adjust the dispensers to deliver the correct amount of chemicals to the dishwasher.

5. Chemical containers must be placed as close to the dishwasher as possible and no higher than 10" above the floor.

Chemical Dispensing Pumps Chemical Pick-up Tubes

Initial Start-up - Chemical Dispensers

15

Installation Guide Chemical Dispensers

How to Prime the Dispensers

1. Place the chemical containers next the dishwasher.

2. Insert the detergent and rinse-aid pick-up tubes in the correct chemical supply container.

3. Open the dishwasher door.

4. Press and hold the PRIME switch up to prime the detergent.

5. Watch the detergent injection point located on the right side wall of the machine until chemical enters the machine.

6. Press and hold the prime switch down for 30 seconds to prime the rinse-aid.

Chemical Injection Point

Chemical Dispensers - Initial Start-up

16

Installation GuideChemical Dispensers

How to Adjust Chemical Dispensers:

1. The chemical dispensing pumps are adjustable.

2. Adjustments are made by turning the trim potentiometers located on the dishwasher control board located at the lower right corner of the machine.

3. Remove the lower front access panel and identify the control circuit board cover.

Trim Potentiometers

Each dispensing trim potentiometer is labeled on the cover.

4. Insert a small screwdriver into an access hole.

5. Turn the trim potentiometer clockwise to increase the amount of dispensed chemical; or counter-clockwise to reduce the dispensed chemical.

NOTE:The water level may be changed by adjusting the fill trim potentiometer on the circuit board.

CAUTION:DO NOT TURN THE ADJUSTMENT SCREW PAST ITS STOP. PERMANENT DAMAGE TO THE CIRCUIT BOARD WILL RESULT IF THE POTENTIOMETER SCREW IS TURNED TO FAR.

Trim Potentiometers

Chemical Dispensers

17

1. Push the POWER switch up to the ON position. The switch illuminates, water enters the wash compartment. Wash tank heater heats wash water and the booster heater begins to heat the final rinse water.

2. Wait 10-minutes for the booster to reach temperature. Then, run 1 empty cycle before inserting your first rack of dishes.

NOTE:Make sure the wash temperature is a minimum of 150°F for high temp models and a minimum of 140°F for low temp models before beginning the wash cycle.

3. Prescrap and load wares into the appropriate dishrack. Do not overload dishrack. Load wares in a peg rack; load silverware in a single layer in a flat-bottom dishrack. Overloading dishrack will result in poor washing results.

4. Open dishwasher door and slide dishrack into the machine. Load 1 dishrack per wash cycle.

5. Close the dishwasher door. Press and hold START button for 1-second. The cycle light illuminates and the wash cycle begins. NOTE:

Opening the door stops the cycle. When the dishwasher door is closed the cycle resumes automatically. The dishwasher cycle will reset to the beginning If the door is open for more than 5-seconds.

Operation

All 201, 401 Control Panels

501HT Control Panel

Operation Normal Wash Cycle

I

OSTART POWER

PRIME OFF / DRAIN

ON

DET

R/A

PRIME

DET

R/A

Rinse Sentry Feature High temperature dishwashers with built-in booster heaters are equipped with the Rinse Sentry feature. This feature extends the wash cycle for a maximimun of 5-minutes to ensure that the final rinse water temperature is a minimum of 180°F.

18

Operation

Operation Operation

Normal Wash Cycle (continued)

6. Check the rinse cycle temperature gauge during the final rinse cycle to ensure the final rinse temperature ranges between 180°-195°F for high temperature models. Run 2-3 cycles before checking the temperature.

7. The green in-cycle light goes out completing the cycle. The final rinse water is held for the next wash cycle.

8. Open the dishwasher door and remove the dishrack of clean wares.

9. Repeat steps 2-8 for additional cycles.

NOTE:Poor washing results will occur if the scrap screen is not cleaned regularly.

Extended Wash Cycle - Model 501HT OnlyThe extended wash cycle is ideal for pots, pans, and heavily soiled items.

1. Follow STEPS 1-5 of the Normal Wash Cycle.

2. Wait 10 seconds to allow detergent to enter into the dishwasher before pressing the extended wash button.

3. Press the EXT WASH switch. The light above the EXT WASH switch illuminates, indicating that the dishwasher is in a continuous extended wash mode.

4. Press the EXT WASH switch again to take the dishwasher out of the extended wash mode. The light above the EXT WASH switch goes out but the green light above the START switch will stay illuminated, indicating the dishwasher has resumed the remainder of the wash cycle.

NOTE:The dishwasher washes until the extended wash cycle switch is pressed to stop the extended wash mode, or for a maximum of 15 minutes.

19

Cleaning

Cleaning

The best preventative maintenance is to keep the dishwasher as clean as possibleduring regular use and ensure best results. A regular cleaning schedule will increase the life of the dishwasher.

CAUTION:Damage to the unit or improper operation may occur if components are notflushed and cleaned on a regular scheduled basis.

Daily-End of the Day

1. Push the POWER switch to the OFF/DRAIN position and close the door to drain the tank. The green in-cycle light will illuminate indicating the machine is in the drain out cycle. This will last 90-seconds.

2. After the green in-cycle light goes out, open the door and remove both the upper and lower spray arms. Hold each spray arm, then remove the knurled retaining screw.

3. Clean the scrap screen by rinsing with clean water. Do not strike the screen on hard surfaces.

Clean Sump Check Spray Arm Bearings

20

Clean Wash Nozzles and Bearings

Cleaning

Cleaning Daily-End of the Day (continued)

4. Clean the spray arms to remove any debris from spray nozzles by back-flushing with water. Do not strike the spray arms against solid objects.

5 Reinstall the scrap screen.

6. Wipe the exterior of the dishwasher clean using a soft cloth and mild detergent.

7. Leave the dishwasher door open overnight to allow the inside to dry.

21

Cleaning

Cleaning

After Meal Period or Every 8 HoursClean the scrap screen after each meal period and more frequently if necessary in order to keep the scrap screen from becoming clogged.

DelimingYour dishwasher should be delimed regularly. The frequency will depend on the mineral content of your water.

Inspect your machine interior for lime deposits. If deliming is required, a deliming agent can be used to remove the deposits.

DANGER:DEATH or serious injury may result if Hazardous Gases are created when deliming solution mixes with household bleach (sodium hypochlorite) or any products containing chlorine, iodine, bromine, or fluorine. Never mix deliming solution with other chemicals. Consult your chemical supplier for specific safety precautions.

CAUTION:Chemical burns or severe skin irritation may result when handling deliming solution. Always wear protective clothing when handling deliming solution. Consult your chemical supplier for specific safety precautions.

Note: Consult your local chemical supplier for the proper chemicals.

22

Maintenance

Maintenance ScheduleThe best maintenance you can perform is to keep your dishwasher clean.

Before and During Operation

- Check the temperature gauges during operation to ensure the propertemperatures are maintained.

- Check the chemical supply container level and replenish if necessary.

Weekly Maintenance

- Inspect all water lines for leaks.

- Check drain for leaks.

- Clean accumulated lime deposits from the heating element.

- Inspect each spray arm for clogged nozzles.

- Check the scrap screen for damage and cleanliness.

- Clean the chemical supply tubing.

To Clean the Chemical Supply Tubing:

1. Remove pick-up tubes from each container and place them in containers of hot water.

2. Press and hold the PRIME switch in the “UP” position to flush the detergent tubing and in the “DOWN” position to flush the rinse-aid tubing. (rinse-aid and sanitizer on LT Models).

3. Remove the pick-up tubes from the hot water and return them to their chemical containers.

4. Press and hold the PRIME switch in the “UP” position to fill the detergent tubing and in the “DOWN” position to fill the rinse-aid tubing (rinse-aid and sanitizer on LT Models).

5. Run a complete wash cycle to flush any chemicals out of the wash compartment.

Maintenance

23

Troubleshooting

Condition Cause Solution

Dishwasher will not run.

Low or no water.

Chemicals won’t feed intodishwasher.

Door not closed.Main power OFF.Dishwasher OFF.

Main water supply off.Solenoid valve defective.Solenoid strainer clogged.Flow washer defective.Timer board defective.

Chemical supply low.Supply tubing damaged.Supply tubing kinked.Pick-up tube cloggedTimer board defective.

Close door completely.Check breaker on panel.Turn dishwasher ON.

Open supply valve.Install repair kit or replace.Clean strainer.Replace flow washer.Test/replace timer board.

Refill chemical container.Replace tubing.Straighten tubing.Clean/replace tube.Test/replace timer board.

Low water pressurepumped from spray arms.

Clogged scrap screen.Clogged spray arms.

Clean scrap screen.Clean spray arms.

(HT models only) dishwasher stays inwash cycle.

Rinse Sentry extends wash mode for a maximum time of 5-minutes to allow final rinse water booster temperature to reach 180˚F/82˚C.(501HT only) dishwasher is in Extended Wash Mode.

Raise incoming water temperature.Adjust/replace final rinse booster thermostat.

Turn Extended Wash Modeoff.

Poor wash results. Water temperature low.

Thermostat defective.(See chemicals won’t feed above.)(See low or no water above.)Detergent injector defective.

Wares incorrectly loaded. in dishrack.

Raise incoming watertemperature.Adjust/replace thermostat.(See chemicals won’t feedabove.)(See low or no water above.)Replace squeeze tube.Replace injector motor.Clean tubing and pick-up.

Reposition wares or reduce amount of wares.

HIGH TEMPERATURE MACHINES ARE EQUIPPED WITH THE RINSE SENTRY FEATURE. THE RINSE SENTRY WILL EXTEND THE WASH CYCLE IN THE EVENT THAT THE BOOSTER HEATER HAS NOT REACHED A MINIMUM TEMPERATURE OF 180°F.

RINSE SENTRY FEATURE

24


Blank Page

25

Service Replacement Parts

Service Replacement Parts

Wash Pump/Motor Assy - All Models _____________________________ 26

Wash Tank, Drain, Scrap Screens - All Models _____________________ 28

Built-in Electric Booster (201HT, 401HT, 501HT) ___________________ 30

Base Electrical Components - All Models _________________________ 32

Fill Piping - All Models ________________________________________ 34

Fill Valve Assy - All Models ____________________________________ 36

Fill Chute Assy - All Models ____________________________________ 38

Sprayarm Assy - All Models ____________________________________ 40

Main Terminal Block, Timer Board - All Models _____________________ 42

Rinse-Aid/Sanitizer Chemical Dispensing Pump - All Models __________ 44

Detergent Chemical Dispensing Pump - All Models _________________ 46

Control Panel (201HT/HTN, 201LT, 401HT/HTN, 501HTN, 501LT) _____ 48

Control Panel with Digital Display (501HT) ________________________ 50

Door Assy - All Models ________________________________________ 52

Panel Assy - All Models _______________________________________ 54

Low Temperature Schematic (201LT, 501LT) ______________________ 56

High Temperature Schematic (201HT, 401HT) _____________________ 58

High Temperature Schematic (201HTN, 401HTN, 501HTN) ___________ 60

High Temperature Schematic (501HT with Digital Display) ____________ 62

Timer Chart - All Models ______________________________________ 64

Basic ServiceDigital Temperature Display Board (501HT) _______________________ 68

Timer Board Selector Switch (All Models) _________________________ 70

Timer Board Troubleshooting (All Models) ________________________ 71

Illustration Pg.

26

Wash Pump/Motor Assy - All Models

Item Part Description Qty.No. No.

1 0512340 SCREW, M4.0x0.70 30mm PHILIPS PAN HEAD 9 2 0512341 IMPELLER HOUSING COVER 1 3 114144 NUT, M6 1 4 0501501 WASHER, LOCK, M6 1 5 0501478 WASHER, PLAIN, M6 1 6 0512345 IMPELLER 1 7 114139 SEAL 1 8 1114138 GASKET 1 9 H36356 FLANGE REAR, PUMP 1 10 0512101 PUMP ASSEMBLY COMPLETE, 115VAC/60/1 1 11 0512347 CAPACITOR 1

27

1

2

63

45

7

89

1011

All Models - Wash Pump/Motor Assy

28

Wash Tank, Drain, Scrap Screens - All Models


1 0509302 94” DRAIN HOSE - 5/8” ID X 1” OD N/S 1 2 0712136 SCREEN, SCRAP ASSY 1 3 0512107 THERMOMETER, 7 FT. CAPILLARY (Except 501HT) 1 4 0512169 HEATER, 120VAC 750W (201HTN, 201LT, 401HTN 501HTN, 501LT) 1

---- 0512168 HEATER, 230VAC 1200W (201HT, 501HT) 1 Prior to S/N 14326 ---- 0512426 HEATER, 230VAC 2000W (201HT, 501HT) 1 Beginning with S/N 14326 and above (for all except 501HT) Beginning with S/N 14191 and above for 501HT 5 D500615 FLANGE, PUMP SUCTION 1 6 0507323 THERMOSTAT, WASH TANK 1 7 D80208 GASKET, PUMP SUCTION 1 8 D500603 ELBOW, PUMP SUCTION 1 9 D80305 GASKET, ELBOW 110 108447 CAP, 1 1/4 PLASTIC 111 0512322 CLAMP, HOSE 1-13/16 - 2-3/4 MAX S/S 212 0501501 WASHER, SPLIT LOCK 1/4i 304SS 413 0501539 NUT, HEX SS 1/4-20 414 0503718 FOOT, ADJUSTING 115 0501411 SCREW, 10-32 X 1/4 RH SLOT SS 1 16 0501379 SWITCH, 15A 117 0312096 BRACKET, DOOR SWITCH 118 112612 THERMISTOR, 10k 2 WIRE ASSY (501HT Only) 219 0312144 BRACKET, WASH PUMP 1 20 0502571 CLAMP, HOSE GEAR HOSE 1-1/2” SS 221 0512118 HOSE, PUMP SUCTION 122 0512119 HOSE, PUMP DISCHARGE 123 113604 THERMOSTAT, HIGH LIMIT 124 0508872 ADAPTOR, THERMOMETER 1 0512299 ADAPTOR, THERMOMETER (501HT ONLY) 1 25 201029 NUT, LOCK 1/2 INCH NI PLATED 226 0508873 ADAPTOR, THERMOSTAT (NOT SHOWN) 127 0508752 4-40 X 5/8” SCREW 228 108954 6-32 LOCK NUT N/S 2

29

All Models - Wash Tank, Drain, Scrap Screens

2

6

4

23 28

3 18

7

8

9

10

12

13

14

5

17

15

16

19

22

20

11

21

24

25

30

Item Part Description Qty.No. No. 1 0509042 BOOSTER TANK 1 2 0512185 BOLT, HEX FLANGE 1/4-20 X 3/8 SS 2 3 0508817 PLUG, 1/8 HEX COUNTERSUNK 1 4 109985 SEAL, ELECTRIC HEATER FLANGE 1

5 111235 HEATER 5/6.6KW 208/240V 1 111233 HEATER 7.5/10KW 208/240 (70 DEGREE RISE) 1

6 H161123 COVER,HEATING ELEMENT 1 7 0501539 NUT, HEX SS 1/4-20 6 8 109069 THERMOSTAT, BOOSTER 1 9 0501501 WASHER, SPLIT LOCK 1/4i 304SS (NOT SHOWN) 310 108954 NUT, GRIP 6X32 NYLON INSERT SS 211 110562 THERMOSTAT, HIGH LIMIT 112 0508840 BUSHING, 3/4MPT X 3/8FPT BRASS 213 0502653 ELBOW, 90 DEGR 3/8MPTX1/2 HOSE 214 0503679 CLAMP, SS GEAR-MIN. 5/16-MAX.7/8 615 107417 HOSE, RUBBER 1/2ID X .84OD 9’16 0512297 COUPLER, 1/2 HOSE X 3/4 NPT (501 HT ONLY) 117 102525 TEE (501 HT ONLY) 118 100184 NIPPLE 3/4 NPT (501 HT ONLY) 119 0512298 BUSHING REDUCING 1/8” NPT X 1/2” NPT 1 (501 HT ONLY)

20 112612 THERMISTOR (501HT ONLY) 1

- Built-in Electric Booster (201HT, 401HT, 501HT)

31

Built-in Electric Booster (201HT, 401HT, 501HT) -

1

2

3

4

5

6

7

8

10

11

12

13

1415

16

14

15

17

1814

13

1219

15

20

32

1 0312173-1 BRACKET (201HT/HTN, 401HT/HTN, 501HT/HTN 1--- 0312173-3 BRACKET (201LT, 501LT) 1 2 0507323 THERMOSTAT, WASH TANK 13 0504822 SCREW, 8-32 X 1/2 PAN HD PH S.S 44 0501373 SWITCH, 3-POST TOGGLE W/KEYWAY 1 5 0501412 SCREW, 10-32 X 3/8 PAN HD PH S.S 2

6 109069 THERMOSTAT BOOSTER (201HT, 401HT, 501HT) 1 (Prior to S/N W14478)

-- 0512108 * THERMOSTAT, BOOSTER (201HT, 401HT, 501HT) 1 (Beginning with S/N W14478)

7 107369 CONTACTOR, 2-POLE, 120V (201HT, 401HT, 501HT) 1 (Prior to S/N 14326)

--- 0512432 CONTACTOR, 3-POLE, 120V 1 (Beginning with S/N 14326 and above)

8 0501412 SCREW, TRUSS SLOT SS 10-32 X 3/8 2 9 0501450 SCREW, NIBS RH 6-32 X 3/16 PHIL.SS 1

* P/N 109069 can be used an alternative replacement part beginning with S/N W14478

Base Electrical Components - All Models


33

All Models - Base Electrical Components

4

1

5

6

2

3

7

8

9

TO BOOSTER

TO WASH TANK

34

1 0502653 ELBOW, 90 DEGR 3/8MPTX1/2 HOSE 1 2 0512185 BOLT, HEX FLANGE 1/4-20 X 3/8 SS 4 3 0300065 SUPPORT, VALVE 1 4 0300203 CLAMP, VALVE 1 5 0502618 HOSE BARB, 1/2 X 3/8 MPT 1 6 0503679 CLAMP, SS GEAR-MIN. 5/16-MAX.7/8 1 7 0509526 HOSE, 1/2 X 7FT FEM.GARD.ADAPT. 1 8 0505320 WASHER, 1” O.D. GARDEN HOSE 1 9 0504952 VALVE, FILL 5.0 GPM BREAKDOWN ON NEXT PAGE 1


Fill Piping - All Models

35

All Models - Fill Piping

36

1 0504952 SOLENOID VALVE, COMPLETE (5.0 GPM) 12 0502803 STRAINER SCREEN, SOLENOID VALVE 1 3 0502804 WASHER, SEAL 1 4 0504958 WASHER, FLOW 5.0 GPM 15 0502807 GASKET 1 6 0502811 KIT, REBUILD 1 7 0505229 GUIDE 1 8 0501406 SCREW, SLOT SS RH 8-32 X 1/2 3 9 0505235 COIL, 115V 60HZ 10W 1

Fill Valve Assy - All Models


37

5

6

7

8

9

All Models - Fill Valve Assy.

38

1 106090 TIE PLATE 22 0509048 GASKET, INLET CHUTE 1 3 0508867 CHUTE, INLET INJ.MOLDED 1 4 0507709 WASHER, FLAT #10 SS 4 5 0503722 NUT, HEX 10-32 SS 6

6 0502666 HOSE, 1/8ID X 1/4OD PVC 8 ft. (RINSE AID AND SANITIZER PUMP)

7 0502667 HOSE, 1/4ID X 3/8OD PVC 8 ft. (DETERGENT PUMP)

8 107417 HOSE, RUBBER 1/2ID X .84OD 5 ft.9 0308822 CLIP, HOSE 1


Fill Chute Assy - All Models

39

9

5

43

2

8

1

76 FROM RINSE-AID AND

SANITIZER PUMPS

FROM DETERGENT PUMP

FROM TOP OF BOOSTEROR FILL VALVE

All Models - Fill Chute Assy.

40

1 0501478 WASHER, 17/64IDX9/16 OD18G SS 4 2 107967 NUT, HEX SS 1/4-20 NYLON INSERT 43 H35509 HUB,UPPER WASH ARM 1 4 107873 WASHER, PACKING 1 5 110215 SCREW, RETAINING 1 6 0502571 CLAMP,HOSE GEAR HOSE 1-1/2” SS 2 7 0512120 HOSE, UPPER WASH ARM, 18* 0712749 ASSY., BEARING 2 9 0512029 NUT, WASH ARM 2 10 0512133 O RING, 2 1/8 OD X 1 3/4 ID X 3/16 #327 SILICONE 2 11 100194 NUT, GRIP 10-32 112 0512104 FLAP, DRAIN 113 0512126 SPRING, TORSION 114 0512130 O RING #106 215 0512128 SHAFT, DRAIN FLAP 116 104883 SCREW 6-32 X 3/8 RD HD SS-SLOT 2 17 0512123 MOTOR, DRAIN 115V 118 0512127 GASKET, DRAIN 119 0501412 SCREW TRUSS SLOT SS 10-32X3/8 120 0512103 MANIFOLD, LOWER F&D 121 0512066 HUB, LOWER WASHARM 122 0512125 SHAFT, LOWER F&D 1 23 H420548 WASH ARM, STAMPED 224 0501420 BOLT, 1/4 X 1i SS HEX HEAD 425 0501481 WASHER, NYLTITE 426 0512133 O RING, 2 1/8 OD X 1 3/4 ID X 3/16 #327 SILICONE 1

--- 0712367 DRAIN MANIFOLD ASSY COMPLETE 1 (includes items11-19)

--- H420548 ASSY, WASH ARM COMPLETE 2 (includes items 8 and 23) * Note: The bearing assembly, P/N 0712749, includes 2 bearings, 1 locknut, and 1 wash arm hub. The individual parts are no longer available as separate replacement parts.


Sprayarm Assy. - All Models

41

8

10 11

11

12

12

13

13

17

18

19

20

21

22

23

25

26

15

151617

16

14

14

8

24

23

All Models - Sprayarm Assy.

42

1 107964 BUSHING, SNAP (ALL) 3

1 0503647 BUSHING, MED. STRAIN REL 1 (201LT, 501LT, 201HTN, 501HTN, 401HTN)

2 0508710 SPACER, 5/16 6 3 0312188 BASE, TIMER ENCLOSURE 1 4 0501411 SCREW, 10-32 X 1/4 RH SLOT SS 2 5 0312189 COVER, TIMER ENCLOSURE 1 6 0512243 LABEL, ADJUSTMENT 1 7 106695 SCREW, 6-32 X 1/2 ROUND HD PHILLIPS 6 8 0512105 TIMER, SOLID STATE 1 9 0312339 COVER ,ENCLOSURE, ELEC. CONN 1

10 0504951 BLOCK, TERMINAL 3-POLE (201HT, 401HT, 501HT) 1 (PRIOR TO S/N 14326)

---- 0509527 BLOCK, TERMINAL 4-POLE (201HT, 401HT, 501HT) 1 (BEGINNING WITH S/N 14326 AND ABOVE)

11 0501412 SCREW TRUSS SLOT SS 10-32X3/8 112 0503592 LABEL, GROUND 113 0501403 SCREW, BRASS RH 10-32X3/4 SLOT 114 0312338 BASE, ENCLOSURE, ELEC. CONN 1 15 0501493 WASHER LOCK #10 EXT. TOOTH BR 116 0501533 NUT, BRASS 10-32 117 0501472 WASHER, FLAT 1/8 X 1/2 BRASS 118 0512373 FUSE, 4A-250VAC (located on timer board) 1


Main Terminal Block, Timer Board - All Models

43

3

1

4

5

7

818

12

1011

9

13

14

15

16

6

2

17

All Models - Main Terminal Block, Timer Board

44

1 0503756 MOTOR, INJECTOR PUMP 1 2 0706635 TUBE, ELEMENT ASSEMBLY 45CC 1 3 0707142 ROTOR, ASSEMBLY 1 4 0501519 TIE, NYLON 4i 2 5 0505483 LABEL, RINSE AID 1 0503694 LABEL, SANITIZER 1 6 0306363 TUBE,1/2IDX11-7/8LG. STIFFENER 1 7 0501869 STRAINER 1 8 0504822 SCREW, 8-32 X 1/2 PAN HD PH S.S 1 9 0506589 SCREW, PAN 6-32X7/8 SS PHILLIP 2 10 0502666 HOSE, 1/8ID X 1/4OD A/R


Rinse-aid/Sanitizer Chemical Dispensing Pump - All Models

45

All Models - Rinse-aid/Sanitizer Chemical Dispensing Pump

46

1 0510870-1 GEARMOTOR,108 RPM, 115/60/1 1 2 114203 PUMP HD KIT, PERISTALIC 1 3 114202 TUBE ASY,SANTOPRENE,1/4IDX8.25 1 4 0501519 TIE, NYLON 4i 2 5 0502644 ELBOW, 1/4 HOSE BARB 1 6 0501519 TIE, NYLON 4i 4 7 0502667 HOSE, 1/4ID X 3/8OD A/R 8 0503695 LABEL, DETERGENT 1 9 0306363 TUBE,1/2IDX11-7/8LG. STIFFENER 110 0501869 STRAINER 1


Detergent Chemical Dispensing Pump - All Models

47

10

9

8

7

6

5

4

3

2

1

All Models - Detergent Chemical Dispensing Pump

48

1 0512220 SWITCH, ROCKER DPDT, 120VAC, (201HT/HTN, 1 201LT, 401HT/HTN, 501LT, 501HTN 1 0512221 SWITCH, ROCKER DPDT, 250VAC 1 (201HT/HTN, 401HT/HTN, ) 12 0512232 LIGHT, INDICATOR, GREEN LED, 2VDC, (All Models) 1

3 0512218 PUSHBUTTON,GREEN 13A 0512217 HOUSING, SWITCH 13B 0512216 CONTACT, MOMENTARY 14 0512226 SWITCH, ROCKER, ROUND, SPDT, MOMENTARY 1 5 0512107 THERMOMETER 16 0512115 LABEL, (201HT/HTN, 401HT/HTN) 16A 0512329 LABEL, (201LT) 17 0501408 SCREW, TRUSS, SLOT 8-32 X 1/4 48 0312183 PANEL, CONTROL, FRONT 19 0503580 NUT, 10-32 4


Control Panel - (201HT/HTN, 201LT, 401HT/HTN, 501HTN, 501LT)

49

12

6A

4

6

9

3 3A

3B

5

8

Front access panel

7

(201HT/HTN, 201LT, 401HT/HTN, 501HTN, 501LT) - Control Panel

50

1 0512221 SWITCH, ROCKER DPDT, 250V NEON 1 2 0512232 LIGHT, INDICATOR, GREEN LED, 2VDC 23 0512213 SWITCH, PIEZO 24 0512226 SWITCH, ROCKER, ROUND, SPDT, MOMENTARY 15 0501408 SCREW, TRUSS, SLOT SS 8-32 X 1/4 26 0512113 LABEL 17 0512357 SPACER, DIGITAL DISPLAY BOARD 28 0503580 NUT, 10-32 49 0512106 TEMPERATURE DISPLAY BOARD, DIGITAL 110 0501563 SCREW, #8 X 3/8 411 0312371 PANEL, REAR 112 0501412 SCREW, 10-32 X 3/8 413 0312183 PANEL, CONTROL CABINET 1

NS 0512362 HARNESS, DIGITAL DISPLAY BOARD 1

NS 0512223 HARNESS, CONTROL PANEL 1


Control Panel with Digital Display - (501HT)

51

1

3

4

12

7

8

8

10

10

11

5

6

2

9

5

12

13

(501HT) - Control Panel with Digital Display

52

1 0312171 HANDLE, DOOR 1 0312172 HANDLE, DOOR, 501HT ONLY2 0501408 SCREW, TRUSS SLOT SS 8-32 X 1/4 23 0712164 DOOR WELDED ASSY 14 0712162-1 HINGE, RH ASSY 1 5 0501476 WASHER,SS 9/32 X 5/8 OD 1 6 0501422 BOLT, HEX SS 1/4-20 X 1-1/2 1 7 0512122 SPRING, DOOR 2 8 0712162 HINGE, LH ASSY 1


Door Assembly - All Models

53

1

2

3

4

5

6

7

8

All Models - Door Assembly

54

1 0312193 PANEL, FRONT 1 (201HT/HTN, 201LT, 401HT/HTN) 2 0312372 PANEL, FRONT (501HT) 1 3 100779 SCREW 1/4-20X5/8 TRUSS SS PHIL 2 4 108826 GROMMET 2 5 0312174 PANEL, RH SIDE 1 6 0501412 SCREW TRUSS SLOT SS 10-32X3/8 2 7 0312191 PANEL, BACK 1 8 0312212 HOOD, MOYER DIEBEL 1 9 0501478 WASHER, 17/64IDX9/16 OD18G SS 410 0501539 NUT, HEX SS 1/4-20 411 0312175 PANEL, LH SIDE 1


Panel Assembly - All Models

55

4

2

3

3

1

4

5

6

7

6

6

8

9610

11

All Models - Panel Assembly

56

This Page IntentionallyLeft Blank

Blank Page

57

Electrical Schematics


58


Prior to S/N 14326201HT/HTN, 401HT/HTN, 501HTNHigh Temp w/ built-in boosters

59


60


61


LOW VOLTAGE SECTION

MA

XIM

UM

OV

ER

CU

RR

EN

TP

RO

TEC

TIO

N 4

0 A

MP

S

MIN

IMU

M C

IRC

UIT

AM

PA

CIT

Y40

AM

PS

PR

OTE

CTI

ON

30

AM

PS

MIN

IMU

M C

IRC

UIT

AM

PA

CIT

Y

MA

XIM

UM

OV

ER

CU

RR

EN

T

30 A

MP

S

2 AND 5 VDC

EWL

DVC

DIAGRAM STATEEND OF CYCLEPOWER-OFFDOOR-OPEN

WP

DP

RAP

DEP

FRV

DVO

CPS

BFS

SSEWS

DSS

CL

POL

1

2

CO

MM

ON

0512092 REV 3

208/230 VAC

NUMBER/REV

BOOSTER HEAT1HTR

BT BS

26-FEB-07DATE

HC1

PER LOCAL ELECTRICAL CODES

PS

HC1

GND

TO CUSTOMERS DISCONNECT SWITCH

115-208/230V 60HZ

TT TS

WHTR

DP DRAIN PUMPCB CIRCUIT BOARD

DVO DRAIN VALVE OPENBFS BOOSTER FILL SWITCH

FILL/RINSE VALVEGROUND

DOOR SAFETY SWITCHDRAIN VALVE CLOSED

GND

DVC

FRVDSS

CYCLE LIGHTWASH PUMP

CHEMICAL PRIME SWITCHSTART SWITCH

BOOSTER CONTACTORBOOSTER HEATER

DETERGENT PUMPPOWER ON LIGHT

WPSS

CPS

CL1HTR

POL

HC1DEP

BOOSTER SAFETY THERMOSTATEXTENDED WASH SWITCHSANITIZER PUMPSP

EWSBS

POWER ON SWITCHRINSE AID PUMP

TANK HEAT SAFETY THERMOSTATTANK HEAT THERMOSTAT

BOOSTER THERMOSTAT

TTTSBT

RAPPS

EXTENDED WASH LIGHTWASH TANK HEATERWHTR

EWL

5 kW

Prior to S/N 14326HIGH TEMP DIGITAL UNDERCOUNTER

RTS

WTS

RINSE TEMPERTURE SENSORWASH TEMPERTURE SENSORWTS

RTS

GND

HC1

5 kW

BOOSTER HEAT208/230 VAC

1HTR

208/230V+115V NEUTRAL 60HZ

21

NL2L1

DETERGENT

FILL/RINSE

DRAIN VALVE CLOSED

DRAIN VALVE OPEN

DRAIN PUMP (not on 501HT)

WASH PUMP

R/A

NE

UTR

AL

115 V

ON

/OFF

BO

OS

TER

1L2

1L11

5

1

3 4

1L1 7

8

9N

22

15

17

16

18

19 20

15

10

1 N

1

1H21H1

11

12

8

9

7

13

14

10

CB

8 7 56

4 3 2 1

4 3 2 1115 V

NEUTRAL

30 31 32 33

L1 L2 NL3

1H1

1H3

1H2

SINGLE PHASE THREE PHASE

L2

L1

10

62


Models 201HT, 401HT beginning with S/N W14236 and above

63


For machines beginning with S/N 14326 and aboveHigh Temp Digital Undercounter

64

Blank Page


65

Timer Chart

Timer Chart

66

Timer Charts

67

Timer Chart

Basic Service

68

Digiital Temperature Display Board - 501HT

Serv

ice

Bul

letin

501H

TM3,

UH

200B

Apr

il 20

08

Part

# 0

5121

06 D

igita

l Tem

pera

ture

Dis

play

Boa

rd T

he d

igita

l tem

pera

ture

dis

play

boa

rd d

oes

not c

ontro

l tem

pera

ture

, and

is n

ot in

terfa

ced

with

the

timer

boa

rd.

The

was

h di

spla

y w

ill u

pdat

e ev

ery

10 s

econ

ds

• Th

e rin

se d

ispl

ay u

pdat

es e

very

20

seco

nds

if th

e te

mpe

ratu

re is

bel

ow 1

70°F

, and

eve

ry s

econ

d if

the

tem

pera

ture

is a

bove

170

°F•

TEST

PR

OC

EDU

RE

1.

Rem

ove

the

ther

mis

tor h

arne

ss.

The

final

rins

e an

d w

ash

disp

lays

sho

uld

both

read

“E”.

2.

Pre

ss a

nd h

old

the

final

rins

e di

spla

y te

st b

utto

n. T

he fi

nal r

inse

dis

play

sho

uld

read

179

°F -

180°

F.3.

P

ress

and

hol

d th

e w

ash

disp

lay

test

but

ton

for a

min

imum

of 1

0 se

cond

s. T

he w

ash

disp

lay

shou

ld re

ad 1

40°F

.

N

ote:

Tem

pera

ture

read

ings

whi

le te

stin

g ar

e di

spla

yed

in °

F, e

ven

if th

e bo

ard

is s

et fo

r °C

dur

ing

the

test

mod

e.4.

If

both

the

was

h an

d fin

al ri

nse

disp

lays

indi

cate

spe

cifie

d te

mpe

ratu

res,

the

tem

pera

ture

dis

play

boa

rd is

ope

ratin

g pr

oper

ly.

Fina

l Rin

seD

ispl

ay

Test

But

ton

Was

h D

ispl

ayTe

st B

utto

n

Dis

play

Sele

ctor

Switc

h°F

or °

C

Fact

ory

Use

Onl

y

Inpu

t Vol

tage

12

0VAC

Ther

mis

tor

Har

ness

Qui

ck

Dis

conn

ect

Plug

69

Digiital Temperature Display Board - 501HT

P/N 0512106 DIGITAL TEMPERATURE DISPLAY CODES

Wash temperature is below 100°F

Bad booster thermistor Open or broken wire between thermistor and board Loose connection Wash tank has no water and is extremely hot

Wash Display

Wash temperature is above 180°F

Wash tank has no water and heater is on

Rinse Display

Booster temperature is below 100°F

Rinse temperature is above 200°F

Booster tank has no water and heater is on

Bad booster thermistor Broken wire between thermistor and board Loose connection Booster tank is dry and extremely hot

Wash and Rinse Display

Booster and wash tank temperature below 100°F

Booster temperature above 200°F and wash tank temperature above 180°F

Thermistor quick disconnect plug on back of board is disconnected Booster tank and wash tank are both dry Broken wires on thermistor harness, or both thermistors are unplugged or defective

DISPLAY CODE CAUSE

70

Timer Board Selector Switch - All Models

Solid State Timer P/N 0512105

Please note that this solid-state timer board is used for several models ofmachines. Make sure the selector switch located in the middle of the boardis set to F&D.

Service Bulletin201, 401, 501, March 2007

71

All Models - Timer Board Troubleshooting

Test/Condition Indication/Cause Recomendation/Solution 1. Run LED is lit Board has power

Machine is powered up and Run LED Possible bad start switch, scrub switch Unplug low voltage plug. If Run LED lights up: is not lit or wiring short (does not apply to S.S. The start switch or scrub switch failed in the closed

Pizio switch on model 501 or UH200) position, or there is a wiring short Machine is powered up and Run LED Replace the board is not lit after unplugging the low voltage plug

2. Check continuity of the start switch Use plug pin #8, wire #15 as common to plug pin # 1,wire #20 (see Fig.1)

Check continuity of the scrub switch Use plug pin #8, wire #15 as common to plug pin # 4,wire #18 (see Fig.1)

Check continuity of the cycle light Use a meter with diode setting - to cycle light, plug pin # 6, wire #16

Check continuity of the scrub light Use a meter with diode setting - to scrub light, plug pin # 7, wire #17

3. Wash motor LED is lit Indicates output voltage to the wash motorNote: LED is not lit during soft start

Wash motor LED is not lit, but wash Replace the board motor runs continuously

4. Fill LED is lit Indicates output voltage to fill valve

5. Select the appropriate setting on the Note: This solid state timer board is used for Set dipswitch to FWR for model UH170 and UH200 dipswitch for the model of machine several different models Set dipswitch to F&D for model 201, 401, 501, UH100 the solid state timer will be installed in

6. Use the skip switch to force the timer Eg: Pressing the skip switch immediately after starting to the next segment of the cycle the cycle will make the machine skip the wash cycle,

and go straight into the drain cycle

7. Use the reset button to reset the solid The reset button will reboot the solid state timer state timer board board (much like rebooting your computer)

8. 4 amp board output fuse is blown Replace the 4 amp fuse and check outputs

9. 0.063 amp internal board supply fuse Replace the solid state timer board is blown

Service BulletinTroubleshooting Timer Board P/N 0512105201, 401, 501, UH100, UH170, UH200March 2007

LOW VOLTAGE SECTION

2 AND 5 VDC

EWL

SSEWS

DSS

CL

1

CO

MM

ON

DRAIN VALVE CLOSED

15

17

16

18

19 20

15

8 7 56

4 3 2 1

Fig.1

2

967

4

1

3

8

5

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Documents

201HT-0512240-Undercounter Dishwasher - Installation Manual With Service Replacement Parts