Design And Maintenance Manual - Cannon … type d dc metrosite manual... · Design And Maintenance Manual . ... Equipment and Nokia Metrosite BTS DN 9913471- Requirements for

Cannon Technologies Ltd Issue 3

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O2 UK Three Bay 2G Metrosite Cabinet

“DC” Power Version

Cabinet Type “D” Drawing Number C112800B

Design And Maintenance Manual


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Contents

1. PREFACE ....................................................................................................................................................... 4

1.1 Document History ..................................................................................................................................... 4 1.2 Glossary/Abbreviations............................................................................................................................ 4 1.3 References ................................................................................................................................................ 4

2. INTRODUCTION............................................................................................................................................. 5

3. HOUSING PARAMETERS ............................................................................................................................. 5

3.1 Installed Equipment Parameters ............................................................................................................. 5 3.1.1 ACTIVE EQUIPMENT CHAMBER LAYOUT .................................................................................................. 5

3.1.2 ELECTRICAL SERVICES CHAMBER LAYOUT…………………………………………………………………….6

4. ROADSIDE EQUIPMENT HOUSING APPROACH........................................................................................ 7 4.1 Roadside Equipment Housing Dimensions............................................................................................ 7

4.2 Roadside Equipment Housing Mechanical Construction ..................................................................... 7 4.2.1 ROADSIDE EQUIPMENT HOUSING DESIGN................................................................................................ 7 4.2.2 ELECTRICAL SERVICES CHAMBER........................................................................................................... 8 4.2.3 CABLE ENTRY / ROADSIDE EQUIPMENT HOUSING ROOT SYSTEM .............................................................. 8 4.2.4 DOOR LOCKS ....................................................................................................................................... 7 4.2.5 MATERIALS ........................................................................................................................................ 11 4.2.6 FINISH ............................................................................................................................................... 11 4.2.7 VANDAL-PROOFING MEASURES ........................................................................................................... 11

5. ROADSIDE EQUIPMENT HOUSING ACTIVE COMPONENT DESIGN ...................................................... 12

5.1 Climate Control ....................................................................................................................................... 12 5.1.1 THERMAL CHAMBER ........................................................................................................................... 12 5.1.2 ENVIROMENTAL ALARM CONTROL MODULE (ECM) ............................................................................... 13

5.2 AC CONSUMER UNIT .......................................................................................................................... 14 5.2.1 DC Power Supply……………………………………………………………………………………………15 5.3 MAIN AC CONSUMER UNIT FOR 2G AND 3G CABINETS .......................................................................... 15

6. INSTALLATION............................................................................................................................................ 16

6.1 Concrete Base Design.............................................................................................................................. 16 6.2 Roadside Equipment Housing Positioning................................................................................................ 18 6.3 Handling.................................................................................................................................................... 18

7. MAINTENANCE............................................................................................................................................ 19 7.1 Preventative Maintenance ........................................................................................................................ 20 7.2 Health and Safety...................................................................................................................................... 20 8. REPAIR TO DAMAGED PAINTWORK……………………………………………………………………………..20

8.1 Touch-up Repair, Powder Coating Only Damaged……………………………………………...................... 20 8.2 Powder Coating Damaged With The Substrate Exposed……………………………………...................... 21

9. APPENDICES…………………………..………………………………………………………………………..…21-32 1 Installation Instructions 2 Environmental Control System Including Electrical Assembly Drawing C112838C Issue 2 48-volt DC 3 AC Distribution Drawing P8811202 4 DC Distribution Drawing P8811203 5 Test Certificate - DC0146 6 Drawing: C112800A (Main Cabinet 7 Drawing: C112803B (Direct Bury Root) 8 Alarm Mapping


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1. O PREFACE

1.1 Document History

Issue Date Author Comments

1

1st Sept 04 R Radford First Draft

2 25th Oct 05 R Radford Changes made to text as per O2 UK requirements

3 06th Aug 07 N. Perren /

G. Nutt

Updated

1.2 Glossary/Abbreviations

HMC – Heat Management Control System

Hiab – Mechanical (hydraulic) lifting device – usually lorry mounted.

ACM – Alarm Control Module

MCB – Miniature Circuit Breaker

RCD – Residual Current Device

IEE - Institution of Electrical Engineers

ECM - Environmental Control System

REC - Regional Electricity Company

LTE - Line Terminating Equipment

1.3 References

C112800A

O2UK Drawing No. 2519 & 2516

O2UK 6401


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2. INTRODUCTION

The purpose of this document is to explain the Active Equipment Enclosure design and features incorporated to meet the requirements laid out in;

O2UK Nokia Metrosite Street Furniture Cabinet 6401 Product Specification for Controlled Climate Housing for Telecommunications Equipment and Nokia Metrosite BTS DN 9913471- Requirements for Installation and Operation.

The Roadside Equipment Housing proposed is a development on the CatWalk range of cabinets manufactured by Cannon Technologies Ltd and is an IP55 rated cabinet against BS EN 60529:1992 Degrees of Protection provided by enclosures.

3. HOUSING PARAMETERS

The compartment design of the Active Roadside Equipment Enclosure has been based on the principles defined in O2UK Datasheet 6401 Nokia Metrosite Street Furniture Cabinet but with supplementary modifications to comply with the Summary of Technical Requirements outlined within BTS DN 9913471.

The roadside equipment housing incorporates an equipment chamber which will house up to three Metrosite assembles complete with a battery back up and DC rectifier system and a separate AC electrical distribution chamber independently accessed from a single hinged front opening door.

3.1 Installed Equipment Parameters

The roadside equipment Housing is designed to accommodate three Nokia Metrosite DC powered units, plus the 48-volt DC rectifier and battery back up to meet O2UK minimum 10 minutes stand by period of operation. The design of the roadside equipment Housing (specified further in this document) account for the physical parameters of O2UK specified equipment deployed in meeting the functionality of these cabinets.

3.1.1 Active Equipment Chamber layout

Fig 1 Fig 2

Fig shows BT equipment position within the cabinet


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The 3-off Nokia Metrosite units are housed on mounting frames attached to the back-panel of the enclosure. Also positioned on these frames is a mounting panel, onto which the combiners are to be bolted, an example can be seen in Fig 3. The rectifier and battery back-up unit is positioned to the left hand side and an illustration of this can be seen in Fig 4. The batteries are housed within a chamber positioned below the rectifier and again can be seen in Fig 4 below.

Fig 3 Fig 4

3.1.2 Electrical Services Chamber layout

This section is designed to accommodate the 230-volt AC supply termination, AC consumer unit and ACM complete with optional 3G isolation and connection. Fig 5 shows the electrical chamber complete with an “Onward Power” consumer unit fitted; Fig 6 is a detailed picture of the Environmental control system, consumer unit, test socket and DC connection lead for BT equipment. Fig 5. (C type cabinet) demonstrates the electrical set up below the shelf on view. Fig 6 shows the set up above the shelf.

Fig 5 Fig 6

All wiring and cable colouring complies with IEE regulations to BS EN 60446:2000 and BS EN 60445:2000 Table 51 and Appendix 7 and BS7671:2001 amendment No2 2004. On cabinets supplied after Apr 2006.


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4. ROADSIDE EQUIPMENT HOUSING APPROACH

The Roadside Equipment Housing is dual skinned and insulated for high heat management incorporating a 3-fan Forced Fan Convection System (FanCell) housed within the roof void to control the equipment housings internal environment. The total air flow is 700m³/hr at 35°C. The main body of the Roadside Equipment Housing is manufactured from Z600 galvanised steel.

4.1 Roadside Equipment Housing Dimensions

Accommodating the physical layout defined within this document the Roadside Equipment Housing sizing is as follows:

Height: 1430-mm from ground level

Width: 1760-mm

Depth: 452-mm including doors

Weight: 261-Kilos ex-works Cannon Technologies Ltd

As shown in drawing C112800B.

4.2 Roadside Equipment Housing Mechanical Construction

4.2.1 Roadside Equipment Housing Design

The Roadside Equipment Housing consists of two separate sections:

• Active electronic equipment section, accessed through two abutting front doors

• Electrical Services/AC consumer section accessed through a single door on the right-hand front of the roadside equipment Housing

The active electronic equipment section (referred to as a Thermal Chamber) has:

• Environmental Seals to all doors

• Three equipment support frames for the Nokia DC Metrosites

• DC power feed with connectors for supply to the Nokia Metrosites

• One battery box complete with 4-off 12-volt 15-amp/hr batteries

• One Eltek rectifier complete with alarm module and distribution MCB’s

• Forced Fan convection unit fitted in roof void

• Two dual skinned doors, which houses the air inlet filters

• Suitable door stays provided on each door

• Wooden back-board for the attachment of the BT fibre splice

• Housing for the environmental alarm Krone connection IDC

• DC Battery Back-up System consisting of an Eltek 6000 Flat-pack PSU or, on cabinets supplied after Apr 2007 an Eltek MPSU 8000 Flat-pack 2 would have been supplied, complete with a 4-way distribution panel housing the DC circuit breakers.

• 1 x Battery chamber in which 1-off string of 4 x 16Ahr SLA Haze 12-18 12-volt 16Ahr


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The Electrical Services/AC consumer section has:

• Environmental Seals to the single door

• Single dual skinned door, which houses the air inlet filter

• Suitable door stay

• Wooden back-board for the attachment of the Local Electricity Authorities meter and fuse

• Wooden back-board for the attachment of the BT equipment

• DC power lead for connection to the BT equipment

• Environmental alarm control and monitoring system housing

• AC power distribution consumer housing

• Twin 13-amp socket providing AC power for test equipment

4.2.2 Electrical Services chamber

This area is equipped with three wooden back-boards on which the Consumer unit housing and Environmental Control Unit are mounted. The rear back board is used to site the BT equipment and the third which is positioned low is for the Local Authorities meter and fuse to be connected and the optional auxiliary onward power connection to be fitted and made. Cable entry is from below the two housings with cable management being provided in either trunking or conduit.

4.2.3 Cable Entry / Roadside Equipment Housing Root System

Cable entry is via plastic duct 100-mm in diameter teeing-off and abutting the front, or ends of the Roadside Equipment Housing at sub-surface ground level or through the actual concrete base via long radii duct bends:

The base under the Roadside Equipment Housing consists of:

• A concrete base including the option of fitting long radius bend control ducting

• Hot-dipped galvanised steel torsion bar controlled root (Drawing number C112803B) see fig 7 below.

Fig 7

4.2.4 Door Locks

Two types of door locks are fitted and the initial locking system fitted to all cabinets supplied up to March 2006 used a dual-key locking system. After this date a Cannon Swing-handle single key entry system was introduced, both systems are described below.

System One: Dual key locking system


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Fig 8 Fig 9 Fig 10

The pair of abutting doors covering the Metrosite housing will be locked by one single Cannon lock which can be locally operated; the single door covering the electrical section will also be locked by one Cannon lock. Both locks will be further dead locked using the approved Kaba lock keyed against the geographical area as specified. For the purposes of illustration and clarity the lock cover has been removed from fig 9, the complete lock with cover is shown in Fig 10; the lock operates as follows:

To unlock:

• Lift the lock cover to expose the actual lock bezel

• Insert the 7-mm triangular key into to the respective lock

• Insert the Kaba key into to the respective lock

• Turn the kaba key 90º clockwise; the key will hold open in this position

• Turn the triangular key 90º clockwise to withdraw the locking rods from the guides

• The door/doors can now be pulled open.

• Engage the door stays on all doors for safety.

• The kaba lock can now be re-locked by turning the key back through 90° anti-clockwise; at this position the key can be removed from the lock. The Kaba is now set for automatic dead locking when the following locking operation is carried out.

As there is an auto-locking facility do not leave the keys in the cabinet.

To lock:

• Ensuring that the keys are not inside the cabinet; release the door stays and fit into retainers.

• On double doors close the door without the lock fitted first and then close the door with the lock fitted, turn the triangular key back through 90º anti-clockwise to re-engage the locking rods into the rod guides; as the rods are driven fully home the dead lock will be heard to automatically engage. You do not need to re-lock with the Kaba key.


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System Two: Single key locking system

Fig 7b Fig 7c Fig 7d

Each door allowing access to the thermal chamber will be locked by a single Cannon Swing-handle lock which can be locally operated; the single door covering the electrical section will also be locked using a Cannon Swing-handle Lock. All locks will be further dead locked using the approved Kaba lock keyed against the geographical area as specified.

To unlock:

• Slide the dust cover upwards to expose the Kaba lock (see fig 7b)

• Insert the Kaba key into the now exposed lock (see fig 7c)

• Turn the Kaba key 90º clockwise; the key will hold open in this position

• Lift the handle out from the bezel and swing through 90° anti-clockwise (see fig 7d)

• The door/doors can now be pulled open.

• Engage the door stays on all doors for safety.

To lock:

• Ensuring that the keys are not inside the cabinet; release the door stays and fit into retainers.

On double doors close the door without the lock fitted first and then close the door with the lock fitted, turn the handle back through 90º anti-clockwise to re-engage the locking rods into the rod guides; press the handle back into the bezel and dead lock the system using the Kaba key by turning it back through 90° anti-clockwise.

4.2.5 Materials

The main body of the cabinet and the doors are made from 2mm thick Z600 pre-galvanised steel sheet. Z600 denotes a total of 600gm/m² of zinc applied in an oxygen-free atmosphere to the steel substrate. The zinc weight equates to a thickness of 42µm per side, from which a life expectancy of 28 years can be expected without additional treatment. (According to trials conducted by the Galvanisers Association the average consumption of zinc from externally exposed galvanised products in the UK is 1.5µm per year.)


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The internal thermal chamber, shelves and brackets etc. are manufactured from pre-galvanised steel in a combination of 1.5 and 2.0mm thicknesses.

Galvanised steel components are punched and folded on CNC machines. Joints will be abutted without fixings, or either bolted or riveted using stainless fixings. Where two surfaces are closing together, but not actually joined (e.g. around the battery / electrical services door), the gap will not exceed 2mm to reduce the likelihood of jemmies effecting a means of entry.

Joints are not welded in galvanised material, because of health risks in the process and the fact that the zinc coating would be destroyed adjacent to any welding.

Cannon outdoor cabinet designs are based on a series of standard in-company ‘entities’ which dictate sizes and shapes of folded edges, door/door post designs, ‘envelope’ corner joints, etc.

4.2.6 Finish

After fabrication of the galvanised steel components/sub-assemblies in Cannon’s workshops, the piece parts will be de-greased, acid etched, lightly iron phosphated to produce an interlock between the galvanised component and the subsequent paint application as well as providing an additional barrier to corrosion. Tests conducted on un-plated mild steel treated only with solution demonstrated its ability to withstand a 1000hr humidity test.

This is then oven dried on the continuous line prior to automatic electro-statically powder coating to a minimum thickness of 90µm. The automatic paint spray booth is constantly attended by an operator with a hand held spray gun, to ensure any suspect areas receive proper coverage.

The final stage in the painting process is to cure the paint by passing it through an oven set to a much higher temperature than the pre-treatment drying oven.

Cannon are able to demonstrate cabinets that have been standing for over ten years in the severest industrial saline conditions in Avonmouth, which show no degradation in this surface treatment. Cannon are confident that this painting process, when added to the 28yr protection offered by the Z600 base material, will easily surpass a 30yr life expectancy.

4.2.7 Vandal-Proofing Measures

Cannon Technologies Ltd has included items which will ensure the cabinet will withstand vandal attack; these measures are designed to ensure the cabinet’s integrity is not breached.


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5. ROADSIDE EQUIPMENT HOUSING ACTIVE COMPONENT DESIGN

5.1 Climate Control

This section defines the key features incorporated into the development of the Roadside Equipment Housing to meet specific conditions specified in O2UK Nokia Metrosite Street Furniture Cabinet 6401 and Nokia Metrosite DN 9913471 documents.

In the design of the heat management system, to meet the requirements specified within the internal section of the enclosure, when the following factors apply:

• An external ambient temperature range of between -15°C and +35°C plus the effect of Solar Gain at 800-watt/m² of its effected surface area i.e. face, roof and one end

• The maximum heat dissipation within the equipment chamber is based on deployed equipment, i.e. 1.5 KW

Please note that heaters are not deployed within the cabinet’s main thermal chamber configuration;

5.1.1 Thermal Chamber

The approach to the heat management system is to use forced fan convection, transferring the internally generated heat to atmosphere via fans and replacing this air by the use of the external cooler ambient air. The system uses fans internally mounted within the roof void to circulate the air through the internal section under pressure. The internal fans also help in the circulation of the internal air preventing hot spots from occurring.

The system is designed to meet the requirements specified above and are rated to give a ∆t of 5ºC of the measured ambient air temperature at the filter inlet grills. To achieve this, the system uses 3 x 190-mm radial blowers.

The fans can be seen in fig 11 and 12 below.

Fig 11

Fig 12

The fan inlets are above the active equipment and positioned within the roof void; access can be achieved for servicing and replacement to the fan tray by un-screwing the counter-sunk retaining screws, (see fig 13 below) pulling the roof forward and hingeing upwards. The roof can be totally removed by lifting the rear section clear of its retainers.


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Error!

Fig 13

The chamber is sealed to IP55; this is achieved by drawing fresh ambient air through filters positioned within the rear internal and front inner door panels (See Fig 14 and 15). The filters are replaceable and will require periodically changing when dirty. There are a total of four filters within the system one to each door of the three doors and one in the rear panel.

Fig 15

Fig 14

5.1.2 Environmental Control and Alarm Module (ECM)

The ECM controls and monitors the thermal conditions present within the active equipment chamber of the Roadside Equipment Housing. The temperature within the cabinet is maintained within the specified temperature range by increasing and decreasing the speed of the fans. This effectively changes the air flow according to the amount of cooling required. The fans are always on and at very low temperatures just tick over to prevent them from stalling.

The software is dedicated “Cannon-View” licensed software and runs on Windows 98 and above; copies of the software are available from Cannon Technologies Ltd.

A laptop computer can be locally connected to the ECM (Fig 17) using the serial port provided, to download all the information stored within the ECM system, as a diagnostic check. This enables the operator to pinpoint the fault on site. The parameters of all alarm settings can be checked and/or modified locally at each individual site which is password controlled.

Counter-sunk roof securing screws


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Fig 16 Fig 1

The ECM uses various thermal couples strategically placed around the inside of the enclosure. These report back the actual temperatures and conditions within the enclosure to the ECM. The fans used within the heat exchangers are intelligent and again report back information relating to speed, current etc. This information is used by the ECM to either increase or decrease the fan’s speed, or, in low temperature conditions, to turn on heaters (if fitted) to ensure the internal temperature remains within the temperature parameters set. The ECM is a microprocessor-based system allowing the parameters to be both changed and verified at each individual site as part of the operational test if required.

The alarms will be presented as simple normally closed contacts for the following states:

• Low temperature alarm

• High temperature alarm

• Fan failure

• Door open

The ECM outputs alarms and presents these alarms as single signals to an IDC termination block used as the customer termination point (Fig 16). This IDC termination connection unit is positioned to the side of the Eltek rectifier.

5.2 AC Consumer Unit

The consumer unit (see Fig 18) is attached to the right- hand side wall positioned within the Electrical Services Area of the cabinet.

Fig 18


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The consumer unit consists of

• Two pole 63-amp 300-ma RCCB for input terminations

• One 6 amp 30-ma MCB for 13 amp Test Equipment socket

• 16-amp MCB to the 48-Volt DC PSU

• One spare 6-amp MCB

These items are designed and interconnected within a single sealed enclosure.

The AC consumer unit is supplied with two leads of 16-mm² CSA for connection and termination onto the Local Electricity Authorities meter or fuse.

5.2.1 DC Power Supply

On cabinets supplied before Apr 2007 an Eltek flat pack MPSU6000 switch mode unit is installed to supply 1 x 63amp DC power feeds for the Metrosite equipment, a 6amp DC power feed for the Comms supply and a 10amp DC power feed for the environmental control panel. The system comprises of 2 x 1500W rectifiers giving N+1 at maximum configuration. In addition to this 1 x string of 40-ampere-hour batteries are installed as standard to give a minimum back-up time of 10 minutes.

On cabinets supplied after Apr 2007 an Eltek flat pack switch mode unit is installed to supply 1 x 63amp DC power feeds for the Metrosite equipment, a 6amp DC power feed for the Comms supply and a 10amp DC power feed for the environmental control panel. The system comprises of 2 x 1800W rectifiers giving N+1 at maximum configuration. In addition to this 1 x string of 40-ampere-hour batteries are installed as standard to give a minimum back-up time of 10 minutes.

The DC system supplies the radio equipment and the environmental controls of the cabinet.

For further detail refer to the Eltek equipment handbook available from O2.

5.3 Main AC consumer unit for onward power (If fitted as an Optional Extra)

Fig 19


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The consumer unit (see Fig 19) is attached to the right-hand side wall positioned below the shelf dividing the Electrical Services Area of the cabinet. The unit is designed to enable the power from the Local Electricity Authorities meter or fuse to be connected to both the consumer unit described above enabling the 2G enclosure to be powered up and also for an adjacent 3G enclosure to be powered up without the need for the Local Electricity Authority to visit site for a re-connect.

The consumer unit consists of:

• Two pole 32-amp MCB’s for connection to the 2G consumer unit; the 3G terminations are made in an adjacent metal clad termination box.

6. INSTALLATION

The following information is offered as a guide only and it is recommended that the services of a technically competent person be sought if any of the following conditions apply.

1. After excavation the soil is either of a peat, sand, clay or gravel basis

2. The water table is close to the surface

3. The area is prone to flooding

4. The area is known to be susceptible to either subsidence or slippage

5. Large amounts of standing water are present

The information issued is and must be treated as a guide only. As Cannon Technologies Ltd is not party to any of the following; it cannot be held responsible for any of the civil construction.

1. site surveys 2. soil analysis 3. construction of the concrete base 4. supervision of any installation work

It is the responsibility of the selected O2 UK civil contractor to ensure the correct

methods of construction are incorporated within their specification. 6.1 Concrete Base Design

The following base recommendations are based on the requirements of the main housing only and do not take the soil conditions into account.

It is recommended that the base design should be in accordance with the steps defined below provided none of the above installation conditions exists.

1. It is recommended that the pad be cast in a position that will maintain a minimum gap of 100mm between the cabinet back panel and any adjoining wall or fence. This is to prevent the build up of debris, which could cause damp to be transmitted through the wall and block the rear filter inlet area.


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2. Excavate a hole sufficient in size to accommodate the root foundation and suitable concrete support

3. Fill the bottom of the excavation with hardcore to the depth recommended and using a suitable mechanical aid compact the hardcore and blind with sand. Position the Root into the excavated hole ensuring that the top surface is level in both axis and that it protrudes above the surface by a minimum of 25-mm. This is to ensure that the joint between the cabinet and the root is above the ground level.

4. It is recommended that a template/shuttering be manufactured to position and hold the cable entry ducts in position. The cable entry points into the root are to be sealed on both sides using “Plastijoint” supplied by “Fosroc Expandite Ltd”. The sides of the template/shuttering should be manufactured from unjointed sheets of plywood. They should be firmly propped to within a tolerance of ± 4mm. The template/shuttering must be removed after 4 days.

The concrete should be mixed to the following ratio, 1 part ordinary Portland cement: 1½ parts sand: 3 parts aggregate with a cement/water ratio of 0.5. Water should be obtained from Water Co tap supply. Pour the mixed cement/aggregate to a depth as specified within the O2 documentation supplied.

The concrete should be vibrated to ensure complete encasement and compaction. The top surface of the base should be trowelled level to ± 1mm along its length and across its width.

5. The surface of the concrete should be protected immediately after casting with two layers of hessian laid over timbers set 75mm above the base surface. Protection should be left in place for four days in both hot and cold climatic conditions. The same period of time should be left before any work is started on the top surface.

6. Before installation of the cabinet the top surface of the base must be covered with a layer of “Bituthene” or other suitable waterproofing membrane. Using a suitable jointing mastic form a small bead around the top surface of the root. Remove the wooden transit blocks from the underside of the cabinet (See Fig 20)

Fig 20

Lift the cabinet in position as described below in section 6.3; position the cabinet onto the root and bolt down using the bolts supplied and attached to the inside of the cabinet. Before tightening completely, check the doors for correct alignment with their apertures. Check that the Cams and Door Locking Rods engage into their respective locations. If the door/doors appear to hang at an angle to the main aperture it may be due to some form of contaminate between the face of the root and the underside of the cabinet i.e. small pieces of aggregate. Loosen the securing nuts and check to ensure that the surfaces are clean apart from the mastic. If there is nothing between the two

Remove retaining screws


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faces use shims to correct any out of tolerance; once corrected tighten the nuts securely.

6.2 Roadside Equipment Housing Positioning

In order for the environmental seals to perform as designed the Roadside Equipment Housing on its base must be aligned as per step 6 in section 6.1 above. The siting of the Roadside Equipment Housing should allow for 750mm space around the perimeter. The Roadside Equipment Housing should be positioned to avoid the following:

• Overhanging trees

• Areas of known flooding

• Areas of known subsidence

6.3 Handling

The cabinet will be supplied with two lifting lugs, one positioned to the top of each side panel. Once the cabinet has been lifted into position the lugs can be removed for safety preventing persons from injuring themselves on the protruding edges.

The operation to lift will consist of the following;

1. Attach the shackles through one end of each soft strap.

2. Attach one strap to each of the two side lifting lugs. (See Fig 21)

3. Fit another shackle to the other end of the soft strap and position it to a spreader beam which would be hung from the crane above the cabinet.

4. The crane operator should gently lift the cabinet to check that the lift is central to the cabinet.

5. Once this has been established and correct centre of gravity is found, it will allow a level, safe lift to be achieved.

6. Once the cabinet is positioned onto the root and loosely bolted into position the Lifting lugs should be removed.

Fig 21

This equipment must be used with due regard to the Lifting Operation and Lifting equipment Regulations 1998.


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7. MAINTENANCE

There are no customer serviceable items associated with the mechanical structure of the Roadside Equipment Housing.

Should any of the doors become damaged due to a vandal attack they can be removed and replaced on site. Paint damage can be repaired roadside and instructions are included within Section 8 of the instruction manual on how this is to be achieved. Repair or replacement on other panel work making up the cabinet would be difficult to carry out in a road-side environment by untrained staff to meet the requirements of IP55. Cannon Technologies Ltd would state that during its time in the manufacture of both track and street side housings, vandalism has never damaged the panel-work to an extent where replacement has been necessary. The cabinet is of a complex construction and Cannon would offer its service to carry out any replacement to panel-work on a contract basis. Servicing of the defective component should be carried out off-site by a competent technician or alternatively returned to the supplier for repair. Replacement of the door would consist of the removal of the earth bonding strap, this will allow the door to be lifted off its hinges when opened greater than 90º; consideration will need to be given to the weight and any relevant H&S issues. Seals will need to be replaced if damaged or after approximately 10-years depending on their condition. The seals will over time lose their memory and will retain the position of the closed door. This condition is more prevalent on cabinets which have been left unopened for a considerable period of time. The seal is a one piece welded seal and replacement is by manually pulling the seal from the frame and re-positioning the new seal. Failed Kaba dead locks can be replaced on site, the operator will need to open the door; firstly the retaining nut is removed from the rear of the lock barrel; once removed pull the dead locking lever from the thread. Remove the large retaining nut fixing the Kaba lock to the bezel; the failed lock can now be removed by pulling the barrel out forwards from the bezel, inserting the new barrel is a direct reversal of the above instructions. Filters need to be replaced annually or sooner if local conditions demand; to replace the filter element in either the door or back-panel (see Fig 11 and 12) is achieved by un-screwing the retaining screws holding the cover in position. Once the cover is removed the dirty element can be removed and placed in a bag to contain the contaminants, replacement is a direct reversal of these instructions. Failed fans can also be completed roadside by removing the roof of the cabinet see Fig 8, 9 and 10 and the description of how this is achieved within section 5.1.1above. Before carrying out any work inside the fan tray switch off the power to the environmental system. With the roof completely removed the actual fan housing is exposed, remove the top cover by un-screwing the retaining screws positioned around the top outer edge. Remove this cover and place to one side, the fans are now exposed; with the failed fan located, unscrew the fan lead from the termination block. From within the main thermal chamber unscrew the screws holding the fan bracket to the fan tray and lift the fan from inside the fan tray. Remove the fan from the bracket and place to one side; to replace the fan it is a direct reversal of these instructions.


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7.1 Preventative Maintenance

Maintenance of the Roadside Equipment Housing would need to be an annual visit to undertake:

• Visual inspection of the mechanical structure

• Application of grease onto both lock and hinge mechanisms

• Replace filter elements

7.2 Health and Safety

Before undertaking any work within the cabinet it is recommended that the following points are observed.

• Personnel are fully compliant with any Heath and Safety issues regarding the work to be carried out.

• The mains power is isolated before undertaking any work.

• In wet conditions it is advised that work is either delayed or, if imperative, then a tent is erected over the cabinet for protection to the internal equipment.

• That any work carried out is done by competent well trained personnel with the appropriate skills.

• Personnel are issued with the correct method and instruction sheets for the work to be undertaken.

• Personnel are either issued with, or assurances made that, the correct working attire is available and worn to suit the work being carried out.

• Personnel have available all tools needed to carry out any work required

• It is recommended that the electrical equipment is tested on an annual basis.

8 Repair to damaged paint work

8.1 Touch-up repair, Powder coating only damaged

This type of damage has the appearance of scratch or scuffmarks only and generally arises during transit or installation of the cabinet.

Small areas of damage of this type can be readily repaired with C.C.S.C product type 600 polyurethane base colour/600 polyurethane curing agent series system.

The damaged area should be wiped free of dirt or deposits using a clean cloth and C.C.S.C product type 06-55 cleaning solvent, allowed to dry and the topcoat 600 polyurethane paint applied with a fine brush. Liberal application of the touch-up polyurethane paint must be avoided so as to minimize or prevent any visual colour differences between the touch-up paint and the original coating that might arise during weathering.

8 .2 Powder coating damaged with the substrate exposed

If the powder coating has been damaged to such an extent that clearly visible areas of metal are apparent, the application of etching primers will be recommended prior to the application of the primer and polyurethane finishing system.


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If corrosion or rusting of the metal surface has commenced, the areas should be wire brushed prior to the clean down stage. In this situation a coat of etching primer, C.C.S.C, 750 two pack epoxy primer Grey base/750 curing agent and 600 polyurethane base colour/600 polyurethane curing agent series will better assist in restoring the original protection of the coating system.

In both cases, care should be taken when wire brushing the affected area not to damage the surrounding intact powder coating.

Conventional spray, apply one coat C.C.S.C 600 series two pack polyurethane semi gloss finish, mixed with 600C hardener and thinned to application viscosity of 25-30 seconds BS B4 cup at 20ºC, air pressure 50-60 PSI. Mixing ratio of product is 5 parts 600 finish to one part 600 curing agent 22-00, require Dry Film Thickness 25 microns, equivalent to 60 microns Wet Film Thickness.

Use C.C.S.C thinner 25-03; allow the product to stand for 10 minutes before use and a minimum of 2 hours between coats. The product will be touch dry within 60 minutes but may take longer during low ambient temperatures.

For the repair of small defects we would suggest the following mixing proportions: Using a small foil baking type case and a metal teaspoon or scoop, measure 5 full spoons of the 600-colour finish into the foil case; add one spoon full of curing agent, mix together with a wooden spatula.

It is not recommended that plastic utensils are used as the solvents can melt some types of plastics.

For ordering materials for repairing small areas quote two pack wet touch up supplied in one litre cans, alternatively aerosols each containing 500ml can be supplied for larger areas.

C.C.S.C refers to:

Courtaulds Coatings Service Centre Unit A14, Railway Triangle Industrial Estate, Walton Road, Portsmouth. PO6 1TN Tel: 01705 201356 Fax: 01705 201358


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9. APPENDICES 1. Installation Instructions 2. Environmental Control System Including Electrical Assembly Drawing

C112838C Issue 2 and 48-volt DC 3. AC Distribution Drawing P8811202 4. DC Distribution Drawing P8811203 5. Test Certificate - DC0146 6. Drawing: C112800A (Main Cabinet 7. Drawing: C112803B (Direct Bury Root) 8. Alarm cable connections


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Appendix 1

O2UK Metrosite Type “C” and “D” cabinet Installation Instructions

1.0 Handling The cabinets weight is 221-kilos for the type “C” and 261-kilos for the type “D” and therefore not suitable for manual handling. The cabinet must be lifted with suitable lifting equipment using the lifting brackets provided. The lifting brackets must be removed after use. The cabinet will be supplied with two lifting lugs, one positioned to the top of each side panel. Once the cabinet has been lifted into position the lugs can be removed for safety preventing persons from injuring themselves on the protruding edges.

The operation to lift will consist of the following operation;

1. Attaching the shackles through one end of each soft strap.

2. Attaching one strap to each of the two side lifting lugs.

3. Fit another shackle to the other end of the soft strap and position it to a spreader beam which would be hung from the crane above the cabinet.

4. The crane operator should gently lift the cabinet to check that the lift is central to the cabinet.

5. Once this has been established and correct centre of gravity is found, it will allow a level, safe lift to be achieved.

6. Once the cabinet is positioned onto the root and loosely bolted into position the Lifting lugs should be removed.

This equipment must be used with due regard to the Lifting Operation and Lifting equipment Regulations 1998.


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Installation

Prior to the installation of the cabinet onto its prepared base, check to ensure that the root has been installed in accordance with O2

specifications and that the concrete has cured to its accepted strength. Check the root for level across both width and depth and that the area is smooth and dry.

Wipe any dust from the top surface of the root and apply a small bead of mastic sealant around the top surface; ensure that the mastic is applied to the outer edge of the bolt holes to prevent water migrating through the joint and into the bolt holes.

Lift the cabinet into position as described above

Bolt the cabinet down to the root using the bolts supplied and attached to the inside of the cabinet

Before tightening completely, check the doors for correct alignment with their apertures. Check that the Cams and Door Locking Rods engage into their respective locations. If the door/doors appear to hang at an angle to the main aperture it may be due to some form of contaminate between the face of the root and the underside of the cabinet i.e. small pieces of aggregate. Loosen the securing nuts and check to ensure that the surfaces are clean apart from the mastic. If there is nothing between the two faces use shims to correct any out of tolerance; once corrected tighten the nuts securely. Cable ducts should be sealed using an expanding foam spray and the internal concrete surface sealed using rubberised bitumen to a thickness of 2-mm approximately; whilst applying ensure that any exposed holes are covered and blocked. When complete close and re-lock the cabinet’s doors before leaving site. On Site Commissioning The cabinet will have undergone various commissioning checks before delivery, as part of the “On Site Commissioning” it is suggested that the following confidence check is conducted.


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Visually inspect the cabinet for damage to paint-work and fittings. The doors fit and lock correctly All electrical components are fitted Any faults must be reported immediately.


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Alarm Mapping for Cabinet Type ‘D’

The alarm mapping for this cabinet is slightly different as the Metrosite can only have ten alarms connected. Alarm

No. EAC Pins Cannon Alarm Name Krone O2 Alarm Name

1 1 14/15 Power Alarm Prompt K1-1 Power Alarm Prompt

2 2 14/15 Power Alarm Deferred K1-2 Power Alarm Deferred

3 3 14/15 PDP K1-3 PDP

4 4 14/15 Link K1-4 Fire Alarm Stage 1

5 5 14/15 Link K1-5 Fire Alarm Stage 2

6 6 16/17 Door Open Alarm K1-6 Intruder Alarm

7 7 16/17 Link K1-7 Multicoupler Alarm

8 8 16/17 Link K1-8 Door Alarm

9 9 16/17 Fan/Thermistor Alarm K1-9 Room Temperature Alarm Stage 1

10 10 16/17 Temperature Alarm K1-0 Room Temperature Alarm Stage 2

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