Nortel SONET AccessNode 800A Series - Procedure 12-17 Replacing the Fan Filters in the Heat Exchanger Roof

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12-64 Cabinet maintenance operations

AccessNode 323-3001-210 Issue 1.0

Procedure 12-17 (continued)

Replacing the fan ﬁlters in the heat exchanger roof

Figure 12-22

Replacing the fan ﬁlters in the heat exchanger roof

FW-15161

—end—

FW-15161

Filter

retaining

bracket with

1/4 turn screws

(Loosen and

pull filter

straight down)

Filter (4)

Front view Side view

Main Page

Table of Contents7
About this Document13
Scope13
What this Document Contains13
How to Use this Document14
References in this Document14
Abbreviations for the Colors of Conductor Jackets in Cables15
Installing the Pad17
How to Use this Chapter17
Chapter Task List17
Site Selection and Preparation18
Acoustical Noise18
Pad Preparation18
Pad Applications19
Pad Drawings19
Pad Installation20
Anchor Plate Kits20
Cable Entry20
Procedure24
Preparing the Poured-In-Place Cabinet Mounting Pad24
Procedure39
Pouring the Concrete39
Installing the Cabinet45
How to Use this Chapter45
Chapter Task List45
Prerequisites for Installation46
Mounting the Cabinet47
Anchor Plate Kits47
Securing the Cabinet to the Pad47
Cable Entry47
Termination Compartment47
AC Load Box Option48
AC Power Pedestal49
Procedure51
Unpacking the Cabinet51
Procedure54
Preparing the Pad54
Procedure58
Preparing the Cabinet for Installation58
Securing the Cabinet to the Mounting Pad59
Removing Eyebolt from Cabinet59
Crane Operation Precautions60
Eyebolt Precautions60
Cabinet Weights60
Procedure67
Mounting the Cabinet on the Pad67
Enabling the Door Locks75
Connecting Commercial Power79
How to Use this Chapter79
Chapter Task List79
Prerequisites for Installation80
Precautions80
AC Power81
Cable Entry81
Load Box Option81
AC Power Pedestal82
Procedure83
Connecting Earth Ground to the Ac Load Box83
Procedure85
Wiring the Ac Load Box as a Branch Circuit85
Procedure88
Wiring the Ac Load Box as a Main Service Entrance88
Procedure91
Connecting Earth Ground to the Ac Power Pedestal91
Procedure95
Wiring the Ac Power Pedestal95
Installing the OSP Cables97
How to Use this Chapter97
Chapter Task List97
Prerequisites for Installation98
Precautions98
Cable Entry99
Procedure100
Pulling the OSP Cabling into the Cabinet100
Procedure104
Butting and Stripping the VF, Miscellaneous, T1 and Maintenance104
Procedure108
Butting and Stripping the Fiber Cable108
Procedure112
Installing the Cable Bonding Clamps112
Procedure116
Applying a Moisture Barrier to the Air-Core Cable116
Routing and Terminating OSP T1 and Maintenance Pairs119
How to Use this Chapter119
Chapter Task List119
Prerequisites for Installation119
Precautions120
Cable Entry120
Procedure121
Routing and Terminating OSP T1 and Maintenance Pairs121
How to Use this Chapter127
Chapter Task List127
Prerequisites for Installation128
Precautions128
Cable Entry129
Procedure130
Procedure131
Cross-Connect131
Procedure140
Splicing the Binder Groups Using BIX Connectors140
Procedure142
Connecting the VF Cable Pairs to BIX Connectors Without the Cross-Connect142
Procedure162
Chapter Task List171
Prerequisites for Installation172
Precautions173
Cable Entry174
Procedure175
Routing the OSP Fiber Cable Directly to the FPP175
Procedure185
Routing the OSP Fibers in Split Flex Tubing to the FPP185
Routing the Fiber Patch Cords from the ABM to the FPP190
Procedure190
Routing Fiber to the ABM When no FPP Is Installed202
Provisioning the External Alarms215
How to Use this Chapter215
Chapter Task List215
Prerequisites for Installation216
Procedure217
Provisioning and Verifying the External Alarms217
Procedure219
Wiring Customer Reserved Optional Defined External Alarms219
Installing and Connecting the Batteries223
Chapter Task List223
Prerequisites for Installation223
Battery Options224
Battery Cables224
Procedure226
Installing 12 V Batteries in a Cabinet226
Procedure236
Installing 6 V Batteries in a Cabinet236
Procedure248
Vault249
Adjusting the Rectifier and the DC Distribution Shelf253
How to Use this Chapter253
Chapter Task List254
Prerequisites for Installation254
Cautions254
Procedure 10-1 Powering the Rectifier(S)257
Procedure 10-2 Adjusting High Voltage Shutdown264
Procedure 10-3 Adjusting Equalize Voltage267
Procedure 10-4 Adjusting Float Voltage269
Procedure 10-5 Adjusting the Second or Third Rectifiers271
Procedure 10-6 Adjusting Load Sharing for more than One Rectifier273
Procedure 10-7 Verifying DC Distribution Shelf Alarms276
Procedure 10-8 Adjusting DC Distribution Shelf Low Voltage Alarms279
Procedure 10-9 Adjusting DC Distribution Shelf Low Voltage Disconnect281
Return282
Finishing the S800A Cabinet Installation Procedures285
How to Use this Chapter285
Chapter Task List285
Procedure 11-1 Installing the Protector Modules287
Procedure 11-3 Installing the Shipping Brackets292
Cabinet Maintenance Operations293
How to Use this Chapter293
Chapter Task List294
Recommended Maintenance295
Replacement Parts297
Procedure 12-2 Replacing the Rectifier306
Rectifiers311
Procedure 12-4 Setting the Equalize Voltage Level317
Procedure 12-5 Adjusting the Float Voltage319
Procedure 12-6 Adjusting the Load Sharing for Replacement Rectifiers321
Procedure 12-11 Using the Protector Test Access Cord333
Procedure 12-12 Replacing an Internal Fan Unit in the Heat Exchanger Roof335
Procedure 12-13 Replacing an External Fan Unit in the Heat Exchanger Roof337
Procedure 12-14 Replacing a Fan Unit in the Air Induction Roof339
Procedure 12-16 Installing a New Optional Equipment Fan Shelf351
Procedure 12-17 Replacing the Fan Filters in the Heat Exchanger Roof356
Procedure 12-18 Replacing the Fan Filters in the Air Induction Roof358
Cabinet and Equipment Wiring and Cabling359
Installation Information in this Chapter359
Grounding360
Cabinet Grounding360
Equipment Grounding360
AC Power Distribution365
AC Load Box366
AC Power Pedestal369
Rectifier Ac Input Cabling373
DC Power Distribution374
Rectifier DC Output375
DC Distribution Shelf DC Power Wiring376
Battery Breaker Panel DC Power Connections380
Breaker Interface Panel Wiring384
Alarm Wiring390
Access Bandwidth Manager Shelf Wiring and Cabling392
SIL Card Connectors and Wiring392
SIR Card Connectors and Wiring402
Test Bypass Pair I/O407
Test Access Pair I/O407
DS1 Input/Output Cards408
DSX and Repeater Cabling409
DSX Wiring Tables409
Copper-Distribution Shelf Cabling420
Service Protection Center VF Cabling420
Service Protection Center Protector Block Wiring425
Wiring Tables428
Technical Support Information441
Index445

Nortel SONET AccessNode 800A Series - Procedure 12-17 Replacing the Fan Filters in the Heat Exchanger Roof

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