BBU 6102 Maintenance

MAINTENANCE INSTRUCTION

Ge9906A

4/1541-LZA 701 6009 Uen X

Copyright

© Ericsson AB 2010, 2012–2019. All rights reserved. No part of this document

may be reproduced in any form without the written permission of the copyright
owner.

Disclaimer

The contents of this document are subject to revision without notice due to
continued progress in methodology, design and manufacturing. Ericsson shall
have no liability for any error or damage of any kind resulting from the use of
this document.

Trademark List

All trademarks mentioned herein are the property of their respective owners.
These are shown in the document Trademark Information.

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 Contents

Contents

1 Introduction 1
1.1 Target Groups 1

2 Prerequisites 3
2.1 Documents 3
2.2 Tools 3

3 Health and Safety Information 5

3.1 Batteries 5
3.2 Electrical Equipment 7
3.3 Approved Disconnector 8
3.4 In Case of Fire 8

4 Preventive Maintenance 11
4.1 Maintenance Intervals 11
4.2 Cooling System 12
4.3 Check Battery 20

5 Alarms 31
5.1 Indicators of the Climate System Controller 31
5.2 Alarm Indications of DAC Unit 32
5.3 Alarm Indications of Active Cooling Unit 33

6 Replace Spare Parts 35

6.1 Replace Door 35
6.2 Replace Cooling System 36
6.3 Controller and Controller Cover of Active Cooling Unit and
DAC Unit 38
6.4 Replace Climate System Controller of DAC Unit and Active
Cooling Unit 45
6.5 Replace Air Filter of DAC Unit 52
6.6 Replace External Fan, DAC Unit or Active Cooling Unit 53
6.7 Replace Internal Fan, Active Cooling Unit 55
6.8 Replace Cooling System Fuse, 20 A 57
6.9 Replace Climate Temperature Sensor Cable 58
6.10 Replace Fuses - 150 A, 200 A, or 250 A 62

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BBU 6102 Maintenance

6.11 Replace Battery 66

7 Field Upgrades 91
7.1 Upgrade Battery Fuse from 150 A to 200 A 94
7.2 Replace Battery Cables 95
7.3 Connect External Power Supply to CLU 96

8 Concluding Routines 101

8.1 Environment 101

Reference List 103

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 Introduction

1 Introduction

This document describes how to perform maintenance work on Battery Backup

Unit (BBU) 6102.

1.1 Target Groups

The target groups for these instructions are the personnel involved in maintenance
and repair.

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 BBU 6102 Maintenance

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 Prerequisites

2 Prerequisites

This section describes the prerequisites.

2.1 Documents
Ensure that the following documents are read and understood:

— Manage Batteries

Note: It is mandatory to read the document Manage Batteries before

installing batteries in the cabinet.
— Personal Health and Safety Information

— System Safety Information

SeeReference List on page 103 for more documents that can be needed.

2.2 Tools
Table 1 specifies the tools and equipment required for BBU maintenance.

Table 1 Required Tools

Tool Product Name
Contains: pump, manometer, and Battery ventilation test tool
T-connector

Maintenance tool set

Torque set, 5–25 Nm

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 BBU 6102 Maintenance

Torque set, 20–100 Nm

Insulated, open-ended torque wrench Torque set

Battery Torque Wrench (8 Nm)

T-handle

Soft brush

Table 2 is a summary of the torque values specified to fasten parts during

installation.

Table 2 Equipment Torque Values

Description Torque
Interblock connectors 8.0 Nm
Battery cables to batteries 8.0 Nm
Fuse to fuse connecting bar 15.0 Nm
048 V DC cable and 0 V cable 15.0 Nm

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 Health and Safety Information

3 Health and Safety Information

Technicians working on Ericsson products or systems must have the necessary

skills and training required to perform their work correctly.

This section contains warnings and information about the following:

— Batteries

— Electrical Equipment

— In case of fire

3.1 Batteries

Danger!

Explosion risk! Follow instructions and connect the lead-acid batteries in sealed
cabinets to gas ventilation tubes that let highly flammable hydrogen gas out of
the cabinet.

Danger!

Explosion risk! Overheated batteries can result in highly flammable hydrogen

gas in the cabinet that can cause an explosion. Install the battery temperature
sensor(s) according to the instructions.

Danger!

Explosion risk! Batteries can produce highly flammable hydrogen gas that leaves
the cabinet through purpose-built vents. Keep all sources of ignition away from
batteries. Ensure that the ventilation openings are not blocked.

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 BBU 6102 Maintenance

Danger!

Open-cell lead-acid batteries can give off highly flammable hydrogen gas that can
cause a fatal explosion. Do not use open-cell lead-acid batteries.

Warning!

Improper handling of batteries can cause them to short-circuit, which can result
in serious injury due to high energy levels. Exercise the necessary care when
working with batteries. Remove any items that can cause short circuits, such
as, rings and bracelets.

Caution!

Batteries can leak electrolytes if mishandled. Electrolytes in contact with skin

or eyes can cause injury. In the event of an electrolyte-induced injury, rinse the
affected area with water and immediately seek medical attention. Use protective
equipment when replacing batteries.

Caution!

Excessive heat can cause battery casings to soften and warp, potentially allowing
acid to escape. Acid can cause injury when in contact with the skin, and can
affect the throat and lungs if inhaled. Use protective equipment when replacing
batteries.

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 Health and Safety Information

Do!

The casing surrounding overheated batteries can become soft and warped. Check
batteries for signs of overheating. Replace damaged batteries according to
instructions.

Do!

Acid causes corrosion, which can seriously damage the product. Check batteries
for signs of acid leakage. Replace leaking batteries according to instructions.

3.2 Electrical Equipment

The following apply to electrical equipment:

— Installation personnel must exercise care when working on or around

electrical equipment.

— In addition to this safety information, the specific safety instructions for all
products involved in the installation procedure must be adhered to.

— When work is being done in a power unit, the power supply system must
be switched off. The AC power and, if applicable, all batteries must be
disconnected.

— Installation personnel must have the skills necessary for electrical installation
according to local regulations.

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 BBU 6102 Maintenance

Danger!

Electric shock risk. Avoid both direct and indirect contact with parts connected to
AC power as this is likely to be fatal. Switch off the AC power before starting work.

Danger!

Improper electrical installation may cause fire or electric shock that is likely to be
fatal. Only a qualified and authorized electrician is permitted to install or modify
electrical installations.

Do!

Always use an approved ESD wrist strap when working with sensitive equipment.
Damage to components mounted on printed board assemblies can occur if an ESD
wrist strap is not used.

Note: AC power installation must be carried out according to local regulations.

3.3 Approved Disconnector

Note: An adequate disconnect device must be provided, internally or externally,
in each supply circuit.

3.4 In Case of Fire

Warning!

In the event of a fire, evacuate the building or equipment site and raise the fire
alarm at the closest alarm point, or call the emergency number. Do not enter again
a burning building under any circumstances.

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 Health and Safety Information

Note: In the event of a fire, toxic and corrosive gases are formed.

In case of fire, do the following:

— Take care of the injured persons.

— Call for help.

— Try to extinguish the fire. Use only an approved fire extinguisher to extinguish
fire on electrical equipment.

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 Preventive Maintenance

4 Preventive Maintenance

This section describes the maintenance routines and procedures for the BBU.

4.1 Maintenance Intervals

Table 3 shows the preventive maintenance actions and how often they must be
performed. The actions must always be performed in the same order as they
appear in the table. The interval between inspections at BBU sites can vary
depending on local environmental conditions.

Table 3 Preventive Maintenance Intervals

Action Interval
Retighten the RBS cabinet to the BBU cabinet • When replacing the batteries,
and retighten the BBU cabinet to the ground. or
• Every six months after
installation in earthquake
zones, and
• After an earthquake.
Retighten the grounding connections. When replacing the batteries.
(1)
Clean the Cooling System. Once a year
(2) (3)
Control corrosion of the CLU. Once a year
(4) (1)
Change air filter of DAC Unit. Once a year
Check batteries. • Depends on use
• Inspection intervals specified
by the battery manufacturer
Check gas ventilation tubes. Once a year, or
in connection with other
maintenance work at the
(1)
equipment.
Retighten the battery cable connectors. When replacing the batteries.

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 BBU 6102 Maintenance

Action Interval
(5)
Replace batteries Use replacement intervals
specified by the battery
manufacturer.
Use checklist Concluding Routines before Every site visit
(6)
leaving the site.
(1) Can depend on environmental conditions.
(2) Climate Unit (CLU)
(3) Applies only in aggressive environments.
(4) Direct Air Cooling (DAC)
(5) See Section 6.11 on page 65.
(6) See Section 8 on page 101.

Ericsson recommends that intervals between preventive maintenance do not

exceed 12 months.

Careful inspection is also recommended during preventive maintenance to

determine whether the interval is too long.

Preventive maintenance visits must be planned to occur before and after the hot
season. This ensures best performance during both hot and cold seasons.

4.2 Cooling System

This section describes the procedure for preventive maintenance of the cooling
system in the BBU.

The cooling system needs preventive maintenance with specific intervals to avoid
breakdown or inefficient operation.

Note: The interval between maintenance can vary depending on the specific
environment.

4.2.1 DAC Unit Maintenance Procedure

The recommended approach when performing a preventive maintenance visit

is as follows:

Note: Do the maintenance procedure in less than one hour to prevent the
battery temperature from rising.

1. Open the cabinet door with the T-handle.

2. Lift to remove the door from the BBU opening and set it aside in a safe
location, to avoid scratching.

3. Check the status of the indicators; see Section 5 on page 31.

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 Preventive Maintenance

4. Disconnect the cables from the climate system controller; see Section 6.3
on page 38.

5. Disconnect the hoses from the drainage pipes, if attached.

6. Unclasp the latch and remove the DAC unit; see Section 6.3 on page 38.

7. If it is cold outside, close the door of the cabinet to maintain the temperature
inside the cabinet.

8. Unfasten the side cover of the DAC unit; see Figure 1.

9. Check if the filter must be changed; see Table 3 for preventive maintenance
intervals. Replace the filter if necessary; see Section 6.5 on page 52 for
replacing the filter.

10. Inspect the external mesh screen. Brush the external mesh screens with a
soft brush, if necessary.

Ge10082A

Figure 1 Removal of Side Cover of DAC Unit

11. Clean the surface of the dampers with a soft, dry cloth if necessary; see Figure
2.

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 BBU 6102 Maintenance

Ge10083A

Figure 2 Dampers

12. Inspect the status of the external temperature sensor cable.

Ge10084A

13. Fasten the side cover; see Figure 1.

14. Open the door of the cabinet, if closed, and slide in the DAC Unit.

15. Connect the cables to the climate system controller.

16. Fasten the latch.

17. Reconnect the hoses to the drainage pipes, if previously disconnected.

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 Preventive Maintenance

4.2.2 Active Cooling Unit Maintenance Procedure

The recommended approach when performing a preventive maintenance visit
is as follows:

Note: Do the maintenance procedure in less than one hour to prevent the
battery temperature from rising.

1. Open the cabinet door with the T-handle.

2. Lift to remove the door from the BBU opening and set it aside in a safe
location, to avoid scratching.

3. Check the status of the indicators; see Section 5 on page 31.

4. Disconnect the cables from the climate system controller; see Section 6.3
on page 38.

5. Disconnect the hoses from the drainage pipes, if attached.

6. Unclasp the latch and remove the Active Cooling Unit.

7. If it is cold outside, close the door of the cabinet to maintain the temperature
inside the cabinet.

8. Unfasten the side cover of the Active Cooling Unit.

Ge11776A

9. Unscrew and remove the four M4 hex nuts and washers holding the inlet
nozzle bracket.

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 BBU 6102 Maintenance

Ge11777A

10. Remove the inlet nozzle bracket.

Ge11778A

11. Unscrew the captive stud of the cover of the controller and remove the cover.

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 Preventive Maintenance

Ge11779A

12. Disconnect the external fan connector from the controller board and release
the cable to enable fan removal; check the marking label on the fan cable.

13. Unscrew and remove the four M4, 8mm torx screws holding the fan.

Ge11780A

14. Slide out the external fan.

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 BBU 6102 Maintenance

Ge11781A

15. Clean the fan using a brush while spraying compressed air.

Note: Make sure that the rotor is cleaned properly to keep the fan balanced.

Ge11531A

16. Follow instructions in Step 14 to Step 9 (that is, the reverse order of
instructions for removing the fan) to place back the fan from where it was
removed.

17. Remove the screws from the frame holding the heat sink in the cassette and
remove the heat sink.

18. Inspect the internal and the external heat sink for trapped debris and other
matter inside the fin channels.

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 Preventive Maintenance

19. If the heat sink looks clogged or heavily soiled, cleaning can be necessary.
Brush off any loose debris from the fins of the internal and the external heat
sink with a soft brush.

Ge10086A

20. Inspect the drainage pipes for trapped dirt and debris. Clean the drainage
pipes with a brush if necessary.

21. Inspect the status of the external temperature sensor cable.

Ge10087A

22. Fasten the side cover; see Step 8.

23. Open the door of the cabinet, if closed, and slide in the Active Cooling Unit.

24. Refer to Section 4.2.1 on page 12 and follow the steps 15 - 17.

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 BBU 6102 Maintenance

4.3 Check Battery

For a list of approved battery types, battery dimensions, and battery weights, refer
to Spare Parts Catalog, Reference [4].

To avoid improper handling of batteries, and possible accidents, it is mandatory to

refer to Manage Batteries, Reference [3].

For information on replacing the battery, see Section 6.11 on page 65.

The section contains instructions for checking the following:

— Temperature sensors; see Section 4.3.1 on page 20.

— Gas ventilation tube kit BKY 901 45/1 and BKY 901 44/2; see Section 4.3.2
on page 20.

— Gas ventilation tube kit NTB 101 215/4; see Section 4.3.3 on page 25.

4.3.1 Battery Temperature Sensors

Check that the battery temperature sensor is properly attached to battery block 3
at one end and to the BFU in the RBS at the other end. See Section 6.9 on page 58
for instructions on how to replace the battery temperature sensor.

Danger!

Explosion risk! Overheated batteries can result in highly flammable hydrogen

gas in the cabinet that can cause an explosion. Install the battery temperature
sensor(s) according to the instructions.

Note: It is mandatory to use a battery temperature sensor. In case the battery

temperature exceeds +60°C (+140°F), the power system must shut off
the charging.

4.3.2 Gas Ventilation Tubes (BKY 901 45/1 and BKY 901 44/2)
All battery blocks must be connected to each other with gas ventilation tubes to
form a chain with just one outflow. Check the gas ventilation system as follows:

1. Check that the gas ventilation tube is routed from the rightmost battery block
and out of the cabinet through the gas ventilation nipple.

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 Preventive Maintenance

B1
B2
B3
B4
B5
B6
B7
B8

Out of cabinet

View from inside

P023319A

2. Check that the end cap is attached to the leftmost battery block.

3. Check that all battery blocks are connected to each other with gas ventilation
tubes.

4. Check that all gas ventilation tubes are in good condition and that they are
not in any way pinched or squeezed, and that gas can flow freely through
the tubes. Replace when in doubt.

The gas ventilation tubes must be changed when replacing batteries. See Section
6.11.1 on page 67 for instructions.

4.3.2.1 Testing Gas Ventilation Tubes (BKY 901 45/1 and BKY 901 44/2)

Test only the NorthStar batteries. Do not test the EnerSys batteries because they
are not designed to withstand external over-pressure and can get damaged
during test.

Note: Never re-install old gas ventilation tubes. The old tubes have hardened
and must be replaced with new ones if removed.

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 BBU 6102 Maintenance

To test the gas ventilation tubes:

1. Remove the end-stop from the left ventilation hole in battery block B1, if it
was placed there.

2. Connect the gas tube included in the Battery Ventilation Test Tool
(LTP 177 200/1) to the left ventilation hole on battery block B1.

Ge4004A

3. Connect the pump to the gas tube.

Ge4004B

4. Connect the manometer to the long gas ventilation tube.

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 Preventive Maintenance

Ge3476E

5. Pump to a maximum pressure of 30 mmHg and wait 10 seconds.

P023355B

6. If the pressure has decreased significantly, there is a leak in the gas ventilation
system. The maximum allowed pressure drop is 50%, that is, down to 15
mmHg. Proceed to the next step to find the leak.

If the pressure has not decreased, go to Step 9.

7. Find the leaking unit by testing each battery block in the battery string and its
connected gas ventilation tube one at a time, as shown in the illustration.

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 BBU 6102 Maintenance

Ge4005

8. Replace the faulty gas ventilation tube(s).

If one or more battery blocks are faulty, replace all battery blocks. Refer to
Manage Batteries for more information.

9. Remove the pump and the manometer, and install the end-stop on the left
ventilation hole of battery block B1 in the chain, as shown in Figure 3.

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 Preventive Maintenance

B1
B2
B3
B4

Out of cabinet

View from inside

P023320A

Figure 3 Install Protective Cap on Battery B1

10. Connect the other end of the long gas ventilation tube from the last battery
block in the chain to the gas ventilation nipple, as shown in Figure 4.

P023182A

Figure 4 Connecting the Long Gas Ventilation Tube

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 BBU 6102 Maintenance

4.3.3 Gas Ventilation Tubes (NTB 101 215/4)

All battery blocks must be connected to each other with gas ventilation tubes to
form a chain with just one outflow. Check the gas ventilation system as follows:

1. Check that the gas ventilation tube is routed out of the cabinet through the
gas ventilation nipple.

8×

Out of cabinet

Ge10418A

2. Check that the end-stop is attached to each battery block.

3. Check that all battery blocks are connected to each other with gas ventilation
tubes.

4. Check that all gas ventilation tubes are in good condition and that they are
not in any way pinched or squeezed, and that gas can flow freely through
the tubes. Replace when in doubt.

The gas ventilation tubes must be changed when replacing batteries. Refer to
Section 6.11.1 on page 67 for instructions.

4.3.3.1 Testing Gas Ventilation Tubes (NTB 101 215/4)

This section contains instructions for testing the gas ventilation tubes.

Test only NorthStar battery blocks. EnerSys battery blocks are not designed to
withstand external over-pressure and can get damaged during the test.

All battery blocks must be connected to each other with gas ventilation tubes to
form a chain with one outflow.

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 Preventive Maintenance

The general principle for testing gas ventilation tubes in NorthStar battery blocks
is as follows:

1. One battery ventilation test tool set

is needed.
1 3

Ge7636B

2. Remove the long gas ventilation

tube from the gas outlet nipple in the
cabinet and attach the T-connector
to it.

Ge10715A

3. Attach the pump (1) and the

manometer (2) to the T-connector.
1

Ge10716A

4. Tighten the pressure release knob.

Ge7865C

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 BBU 6102 Maintenance

5. Pump to a maximum pressure of 30

mmHg.

Ge7865A

160
140 180
120 mmHg 200

100 220

80 240

60 260
40 280
20 0 300

Ge15797A

6. Wait for 10 seconds.

10 seconds

Ge7640C

7. If the pressure decreases significantly,

140
160

mmHg
180 there is a leak in the gas ventilation
120 200

100 220 system.

80 240

60
40
260
280
The maximum allowed pressure drop
20 0 300 is 50%, that is, down to 15 mmHg.

Ge15798A

8. Release the pressure using the knob

on the pump.

Ge7866A

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 Preventive Maintenance

9. Remove the pump and the

manometer.
1

Ge10717A

10. Remove the T-Connector and attach

the long gas tube to the gas outlet
nipple that it was removed from.

Ge10718A

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 Alarms

5 Alarms

This section describes the alarms in the BBU.

5.1 Indicators of the Climate System Controller

There are two cooling systems available for the BBU: DAC Unit and Active Cooling
Unit. Both units are equipped with indicators; see Figure 5 for DAC unit climate
system controller with a cover and Figure 6 for Active Cooling Unit climate system
controller with a cover, to indicate the operational state of the DAC unit and the
Active Cooling Unit.

The indicators are specified in Table 4.

Table 4 Operational State as Defined By Indicators

Indicator Operational Mode
Green – On Power On
Yellow – On Cooling Unit in operation (blinking if
an alarm)
Red – On Cooling Unit Failure
All Off No power available to the Cooling Unit

Figure 5 DAC Unit Climate System Controller with Cover

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 BBU 6102 Maintenance

Figure 6 Active Cooling Unit Climate System Controller with Cover

5.2 Alarm Indications of DAC Unit

The following alarms (Alarm = Open Circuit) are issued by the DAC unit.

The climate system controller monitors the alarm conditions specified in Table 5.

Table 5 Alarm Table

Operating Cooling / Cooling In Operation Power On Alarm Alarm
State Heating Unit Failure Output Reset
Yellow Green
Red Indicat Indicator Indicator
or
Low Supply Off Off Off On Closed Automat
Voltage Circuit ic Reset
High Supply Off Off Off On Closed Automat
Voltage Circuit ic Reset
Internal Off On 2 Quick On Open Manual
(1)
Fan Low Flashes and Circuit Reset
RPM a Pause
Unit Failure Off On 3 Quick On Open Manual
(2)
Flashes and Circuit Reset
a Pause

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 Alarms

Table 5 Alarm Table

Operating Cooling / Cooling In Operation Power On Alarm Alarm
State Heating Unit Failure Output Reset
Yellow Green
Red Indicat Indicator Indicator
or
Heater Off On 4 Quick On Open Manual
(2)
Current Out Flashes and Circuit Reset
of Range (if a Pause
installed)
Multiple Off On Multiple On Open Manual
(2)
faults (for flashes (for Circuit Reset
example, example,
Internal 2 Quick
Fan Low Flashes and
RPM and a Pause, and
Heater then 4 Quick
Current Out Flashes and
(3)
of Range) a Pause)
(1) Climate unit tries to recover itself by restarting, maximum 3 times, before it raises an alarm. After that Manual Reset is
required.
(2) Turn off, wait, and then turn on the power.
(3) This is just one example of the several combinations of multiple faults. The Yellow Indicator column shows the
flashes for this example.

5.3 Alarm Indications of Active Cooling Unit

The following alarms (Alarm = Open Circuit) are issued by the Active Cooling Unit.

The climate system controller monitors the alarm conditions specified in Table 6.

Table 6 Alarm Table

Operating Cooling / Cooling Unit In Operation Power On Alarm Alarm
State Heating Failure Output Reset
Yellow Green
Red Indicat Indicator Indicator
or
Low Supply Off Off Off On Closed Automa
Voltage Circuit tic Reset
High Suppl Off Off Off On Closed Automa
y Voltage Circuit tic Reset
External Off On 1 Quick Flash On Open Manual
(1)
Fan Low and a Pause Circuit Reset
RPM

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 BBU 6102 Maintenance

Table 6 Alarm Table

Operating Cooling / Cooling Unit In Operation Power On Alarm Alarm
State Heating Failure Output Reset
Yellow Green
Red Indicat Indicator Indicator
or
Internal Off On 2 Quick On Open Manual
(1)
Fan Low Flashes and Circuit Reset
RPM a Pause
Unit Failure Off On 3 Quick On Open Manual
(2)
Flashes and Circuit Reset
a Pause
Heater Off On 4 Quick On Open Manual
(2)
Current Out Flashes and Circuit Reset
of Range (if a Pause
installed)
Multiple Off On Multiple On Open Manual
(2)
faults (for flashes (for Circuit Reset
example, example,
External 1 Quick
Fan Low Flash and a
RPM and Pause, and
Internal then 2 Quick
Fan Low Flashes and
(3)
RPM) a Pause)
(1) Climate unit tries to recover itself by restarting, maximum 3 times, before it raises an alarm. After that Manual Reset is
required.
(2) Turn off, wait, and then turn on the power.
(3) This is just one example of the several combinations of multiple faults. The Yellow Indicator column shows the
flashes for this example.

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 Replace Spare Parts

6 Replace Spare Parts

This section describes how to replace the spare parts.

For information on spare parts, refer to Spare Parts Catalog.

6.1 Replace Door

Do the following to replace the door:

1. Groove Unlock the door with the key, and use

Ho
riz
the key to remove the lock cylinder
on Ho (the lock cylinder is to be used with
tal riz
Handle on
tal the new door).
Lock housing
Ho Insert the handle and turn it
riz
on
tal counterclockwise to open the door.
Lock cylinder
Ge8754B

2. Remove the door by lifting it off.

P022360B

3. Unpack the new door, lift it into its

position, align the hooks, and close
the door using the door handle.

P022360C

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 BBU 6102 Maintenance

4. Place the lock cylinder, removed from

the previous door in Step 1, into its
position in the new door.

Ge8864A

6.2 Replace Cooling System

Figure 7, Figure 8, and Figure 9, show the DAC unit (BPD 104 1006/2), the
Active Cooling Unit (BPD 104 1005/2), and the Active Cooling Unit, with the new
controller (BPD 104 1005/2).

Ge10080A

Figure 7 DAC Unit

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 Replace Spare Parts

Ge10081A

Figure 8 Active Cooling Unit

Ge8187A

Figure 9 Active Cooling Unit, with New Controller

There is a DAC Unit, BPD 104 1006/2, with the new controller as well.

Note: Do the maintenance procedure in less than one hour to prevent the
battery temperature from rising.

Remove the air bubble film from the dampers in the DAC unit, before
installation of the DAC unit. Check if the dampers work correctly.

To replace the cooling system:

1. Open the door with the T-handle.

2. Lift to remove the door from the BBU opening and set aside in a safe location,
to avoid scratching.

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 BBU 6102 Maintenance

3. Disconnect the cables from the climate system controller.

4. Remove the fuse on the power supply cable to the cassette, by pressing and
twisting the fuse holder cap, to open the holder.

5. Unclasp the latch and remove the DAC unit or the Active Cooling Unit; see
Figure 10.

6. Slide in the new DAC unit or the Active Cooling Unit; see Figure 10.

7. Connect the cables to the climate system controller.

8. Fasten the latch.

9. Reconnect the fuse and close the door.

Ge10088A

Figure 10 Replace DAC Unit or Active Cooling Unit

6.3 Controller and Controller Cover of Active Cooling Unit

and DAC Unit
Figure 11 shows the upgrade kit for Active Cooling Unit and DAC Unit, and Table 7
describes it.

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Ge8081A

Figure 11 Upgrade Kit Active Cooling Unit and DAC Unit

Table 7 Upgrade Kit Active Cooling Unit and DAC Unit

Item Description Quantity
1 Base bracket with 1
pre-installed controller
2 Controller cover 1
3 Screws 4
4 Cable ties 3
5 Temperature sensor 1
adapter

Replace the climate system controller and cover with the upgrade kit for Active
Cooling Unit and DAC unit as follows:
1. Open the door with the T-handle.

2. Lift the door to remove it from the BBU opening, and set it aside in a safe
location, to avoid scratching.
3. Check the status of the optical indicators; see Section 5 on page 31.

4. Disconnect the power supply to the CLU.

5. Remove the fuse on the power supply cable to the cassette by pressing and
twisting the fuse holder cap to open the holder.

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 BBU 6102 Maintenance

V
250
20
A

Ge8078A

6. Release the CLU cassette latch.

Ge8068B

7. Slide out the cassette enough to access all connectors to the controller.

Note: A grounding wire can be connected to the body of the cassette. Do

not remove the wire, and make sure that it is not damaged when
sliding out the cassette

Ge8069A

8. Disconnect the cables connected to the climate system controller.

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Ge8070A

9. Release the four plastic rivets holding the cover, and remove the cover.
Dispose of the rivets and the cover.

Ge8071A

10. Remove the four M3 nuts, washers, and the four stand-offs holding the
controller, and remove the controller from the cassette.

Dispose of the M3 nuts, the washers, the climate system controller, and the
stand-offs. Leave the short screws protruding from the cassette.

Ge8072A

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 BBU 6102 Maintenance

11. Remove the cover by unscrewing the non-losable screw on the new controller
assembly.

Ge8080A

12. Route the CLU cassette internal cables through the hole in the base of the new
cover assembly, and attach the base of the controller assembly to the cassette
using the screws included in the kit. Tighten the screws to a torque of 2 Nm.

The screws are mounted in the same holes that were used by the plastic rivets.

Ge8073A

13. The controller is preset for the Active Cooling Unit. When installing the new
controller on the DAC unit, remove the jumper from the J5 socket.

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Ge8079A

14. Reconnect all cables to the controller.

15. Route the Active Cooling Unit or DAC internal cables (internal fan (Active
Cooling Unit or DAC Unit), external fan (Active Cooling Unit), external
temperature sensor (Active Cooling Unit or DAC), and thermoelectric module
(Active Cooling Unit)), and tie them firmly to the base of the new cover
assembly using a cable tie.

Ge8074A

16. Route the Active Cooling Unit or DAC Unit external cables (internal
temperature sensor, alarm N/C, heater, when applicable, and supply voltage),
in the direction of the top cover side opening. Tie the bundle about 25 mm
outside the top cover side opening using a cable tie.

Ge8075A

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 BBU 6102 Maintenance

17. If needed, assemble the adapter cable for internal temperature sensor and
secure it with cable tie to the Active Cooling Unit or DAC Unit internal cables.

Ge8074A

18. Check that all cables are routed, connected, and tied according to the
instructions.

19. Attach the cover to the base.

Ge8076A

20. Lock the cover using the non-losable screw.

Ge8077A

21. Slide the cassette back into the BBU, and close the latch.

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 Replace Spare Parts

Ge8068A

22. Put back the fuse on the power supply cable to the cassette that was removed
in Step 5.

V
250
20
A

Ge8078A

23. Connect the power supply to the CLU.

24. After the startup, check the status of the optical indicators; see Section 5
on page 31.

25. Put the door back on the BBU, and close the door using the T-handle.

6.4 Replace Climate System Controller of DAC Unit and

Active Cooling Unit
Figure 11 shows the Climate System Controller of DAC unit and Active Cooling
Unit.

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 BBU 6102 Maintenance

Ge8079B
Figure 12 Climate System Controller of DAC Unit and Active Cooling Unit,
3/BPD 104 1005/1

Replace the Climate System Controller as follows:

1. Open the door with the T-handle.

2. Lift the door to remove it from the BBU opening, and set it aside in a safe
location, to avoid scratching.

3. Check the status of the optical indicators; see Section 5 on page 31.

4. Disconnect the power supply to the CLU.

5. Remove the fuse on the power supply cable to the cassette by pressing and
twisting the fuse holder cap to open the holder.

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 Replace Spare Parts

V
250
20
A

Ge8078A

6. Release the CLU cassette latch.

Ge8068A

7. Slide out the cassette enough to access all connectors to the controller.

Note: A grounding wire can be connected to the body of the cassette. Do

not remove the wire, and make sure that it is not damaged when
sliding out the cassette

Ge8069C

8. Remove the cover by unscrewing the non-losable screw.

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 BBU 6102 Maintenance

Ge8080A

9. Disconnect the Active Cooling Unit or DAC Unit external cables (internal
temperature sensor, alarm N/C, heater, when applicable, and supply voltage)
from the controller .

Ge8075A

10. Cut the cable tie, and disconnect the Active Cooling Unit or DAC internal cables
(internal fan (Active Cooling Unit or DAC), external fan (Active Cooling Unit),
external temperature sensor (Active Cooling Unit or DAC), and thermoelectric
module (Active Cooling Unit)) from the controller.

Ge8074A

11. Remove the controller by loosening the nuts.

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Ge8074B

12. Place the new controller and tighten the nuts.

Ge8074C

13. The controller is preset for DAC. When installing the new controller on the
Active Cooling Unit, add the jumper to the J5 socket.

J5

J6

Ge8079C

14. Reconnect all cables to the controller.

15. Route the Active Cooling Unit or DAC internal cables (internal fan, external
fan, external temperature sensor, and thermoelectric module), and tie them
firmly to the base of the new cover assembly using a cable tie.

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 BBU 6102 Maintenance

Ge8074A

16. Reconnect the Active Cooling Unit or DAC external cables (internal
temperature sensor, alarm N/C, heater, when applicable, and supply voltage).

Ge8075A

17. Check that all cables are routed, connected, and tied according to the
instructions.

18. Attach the cover to the base.

Ge8076A

19. Lock the cover using the non-losable screw.

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Ge8077A

20. Slide the cassette back into the BBU, and close the latch.

Ge8068A

21. Put back the fuse on the power supply cable to the cassette that was removed
in Step 5.

V
250
20
A

Ge8078A

22. If applicable, connect the power supply to the CLU.

23. After the startup, check the status of the optical indicators; see Section 5
on page 31.

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 BBU 6102 Maintenance

24. Put the door back on the BBU, and close the door using the T-handle.

6.5 Replace Air Filter of DAC Unit

Figure 13 shows the air filter of the DAC unit (1/BPD 104 1006/2).

Ge10090A

Figure 13 Air Filter of DAC Unit

Replace the air filter as follows:

1. Disconnect and pull out the DAC unit; see Section 6.2 on page 36.

2. If it is cold outside, close the door of the cabinet to maintain the temperature
inside of the cabinet.

3. Unfasten the side cover of the DAC unit.

4. Replace the air filter of DAC unit; see Figure 14.

Note: The air filter is protected by removable sliding profiles, which must be
put back with the new filter.

5. Fasten the side cover of the DAC unit.

6. Open the door of the cabinet, if there was a need to close the door, and slide
in the DAC unit.

7. Connect the cables to the climate system controller.

8. Fasten the latch.

9. Reconnect the hoses to the drainage pipes, if previously disconnected.

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Ge10091A

Figure 14 Replace Air Filter of DAC Unit

6.6 Replace External Fan, DAC Unit or Active Cooling Unit

Figure 15 shows the external fan, DAC unit or Active Cooling Unit
(1/BPD 104 1005/1)

Ge10092A

Figure 15 External Fan, DAC Unit or Active Cooling Unit

Replace the external fan as follows:

1. Disconnect and pull out the DAC unit or the Active Cooling Unit; see Section
6.2 on page 36.

2. If it is cold outside, close the door of the cabinet to maintain the temperature
inside of the cabinet.

3. Unfasten the side cover of the DAC unit or the Active Cooling Unit.

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 BBU 6102 Maintenance

4. Disconnect the fan from the climate system controller.

5. Pull the fan cable through the grommet. The sealing mastic in the grommet
must be reused.

6. Disconnect the fan from the choke.

7. Unscrew and remove the ring plate; see Figure 16 for the DAC unit and Figure
17 for the Active Cooling Unit.

8. Unfasten and remove the fan; see Figure 16 for the DAC unit and Figure 17
for the Active Cooling Unit.

Note: Check the status of the anti-vibration gasket. Replace it if necessary.

9. Replace the fan.

10. Put back the ring plate.

11. Connect the fan to the choke.

12. Pull back the fan cable through the grommet.

13. Connect the fan to the climate system controller.

14. Fasten the side cover of the DAC unit or the Active Cooling Unit.

15. Slide in the DAC unit or the Active Cooling Unit.

16. Connect the cables to the climate system controller.

17. Fasten the latch.

18. Reconnect the hoses to the drainage pipes, if previously disconnected.

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Ge10093A

Figure 16 Replace External Fan, DAC Unit

Ge10094A

Figure 17 Replace External Fan, Active Cooling Unit

6.7 Replace Internal Fan, Active Cooling Unit

Figure 18 shows the internal fan, Active Cooling Unit (2/BPD 104 1005/1).

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 BBU 6102 Maintenance

Ge10095A

Figure 18 Internal Fan, Active Cooling Unit

Replace the internal fan as follows:

1. Disconnect and pull out the Active Cooling Unit; see Section 6.2 on page 36.

2. If it is cold outside, close the door of the cabinet to maintain the temperature
inside of the cabinet.

3. Unfasten the side cover of the Active Cooling Unit; see Step 8.

4. Disconnect the fan from the climate system controller.

5. Pull the fan cable through the grommet. The sealing mastic in the grommet is
reused.

6. Disconnect the fan from the choke.

7. Unfasten and remove the fan.

8. Replace the fan.

Note: Pay attention to the airflow direction indicated by arrows; see Figure 19.

9. Connect the fan to the choke.

10. Pull back the fan cable through the grommet.

11. Connect the fan to the climate system controller.

12. Fasten the side cover of the Active Cooling Unit; see Step 8.

13. Slide in the Active Cooling Unit.

14. Connect the cables to the climate system controller.

15. Fasten the latch.

16. Reconnect the hoses to the drainage pipes, if previously disconnected.

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Ge10096A

Figure 19 Replace the Internal Axial Fan

6.8 Replace Cooling System Fuse, 20 A

Figure 20 shows the 20 A Fuse valid for DAC unit and Active Cooling Unit
(4/BPD 104 1005/1).

Ge10097A

Figure 20 20 A Fuse

To replace the cooling system fuse, do as follows:

1. Open the door with the T-handle.

2. Lift to remove the door out of the BBU opening and set aside in a safe
location, to avoid scratching.

3. Press the fuse holder cap inwards and turn the fuse holder cap counter
clockwise a quarter turn; see Figure 21.

4. Remove the fuse holder cap.

5. Replace the fuse.

6. Press the fuse holder cap inwards and turn the fuse holder cap clockwise a
quarter turn; see Figure 21.

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 BBU 6102 Maintenance

Bottom

Ge10120A

Figure 21 Replace Fuse 20 A

6.9 Replace Climate Temperature Sensor Cable

Figure 22 shows the climate temperature sensor cable (5/BPD 104 1005/1).

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Ge10121A

Figure 22 Climate Temperature Sensor Cable

Replace the climate temperature sensor cable as follows:

1. Inform the OMC operator and get approval for temporarily taking the backup
battery system out of service.

Note: Make sure that the Battery Fuse Unit (BFU) circuit breaker(s) in the RBS is
(are) off. The battery cables are then not connected to the RBS power.

2. Open the door with the T-handle.

3. Lift to remove the door from the BBU opening and set it aside in a safe
location, to avoid damage.

4. Remove the upper insulation plate and set the insulation plate aside in a safe
location, to avoid damaging.

5. Unfasten the battery straps from battery clamp.

6. Remove the three screws of the battery clamp from the top and remove the
battery clamp.

7. Remove the pole protection caps from battery blocks B1–B5; see Figure 26.

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 BBU 6102 Maintenance

Caution!

Improper handling of batteries can result in the batteries short-circuiting,

which can result in serious injury due to high energy levels. Exercise the
necessary care when working with batteries.

Caution!

Batteries can leak electrolyte if improperly handled. Electrolyte in contact

with skin or eyes can cause injury. In the event of electrolyte injuries, rinse
the affected area with water and seek medical attention immediately. Use
protective equipment when replacing batteries.

8. Remove all the interblock connectors between the battery blocks; see Figure
43.

9. Disconnect the 048 V DC battery cable from battery B1; see Figure 49.

10. Protect the cable against short circuits by using insulation tape on the cable
lug.

11. Disconnect the 048 V DC battery cable from battery B5; see Figure 49.

12. Protect the cable against short circuit by using insulation tape on the cable lug.

13. Put the pole protecting caps back on battery blocks B1 and B5 to protect the
batteries against short circuit.

14. Remove the gas ventilation tubes from battery blocks B2–B4.

15. Slide out battery block B3.

16. Replace the climate temperature sensor cable.

17. Slide in battery block B3.

18. Attach new gas ventilation tubes to the battery blocks B2–B4; see Section
6.11.1.2 on page 69.

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Danger!

Explosion risk! Follow instructions and connect the lead-acid batteries in

sealed cabinets to gas ventilation tubes that let highly flammable hydrogen
gas out of the cabinet.

Note: Battery ventilation tubes must always be connected to the batteries

as specified in this document to ensure safe gas ventilation.

19. Remove the pole protection caps from battery blocks B1 and B5.

20. Remove the insulation tape from the cable lug.

21. Connect the 048 V DC battery cable to battery B1; see Figure 49. Tighten the
cables; see Table 2 for the proper torque.

22. Remove the insulation tape from the cable lug.

23. Connect the 048 V DC battery cable to battery B5; see Figure 49. Tighten the
cables; see Table 2 for the proper torque.

24. Attach the interblock connectors to battery blocks B2–B4; see Section
6.11.1.2.6 on page 78. Tighten the connectors; see Table 2 for the proper
torque.

25. Attach the pole protection caps to battery blocks B1–B5; see Figure 26.

26. Fasten the battery clamp back.

27. Fasten the battery straps, by routing the front battery strap halfway through
the strap holder in the battery clamp.

Note: Make sure to strap the battery straps in a proper way.

Make sure that the gas ventilation tubes are not squeezed by the
straps.

Do not tighten the straps too firmly; otherwise the pole protection
caps can be damaged.

28. Strap the cables to the battery shelf.

29. Check that the gas ventilation tubes are correctly connected and routed out of
the cabinet.

30. Turn on the BFU circuit breakers.

31. Inform the OMC operator that maintenance is completed.

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6.10 Replace Fuses - 150 A, 200 A, or 250 A

The BBU 6102 can have three different types of fuses, which all have identical
form as shown in Figure 23. The correct part number must be identified.

The fuse types are as follows:

— The 150 A fuse is the original factory delivery. It should be replaced with a
200 A fuse as part of the field upgrade; see Section 7 on page 91.

Note: Do not replace the 150 A fuse with a 200 A fuse without replacing
battery cables which are part of the field upgrade kit,

— The 200 A fuse is delivered with systems with variant R2A, which provides
higher power.

— The optional 250 A fuse is used for optional expansion to additional battery
backup systems.

Ge10122A

Figure 23 Fuse

Replace the fuse as follows:

1. Inform the OMC operator and get approval for temporarily taking the backup
battery system out of service.

2. Open the door with the T-handle.

3. Lift to remove the door out of the BBU opening and set aside in a safe
location, to avoid damage.

4. Remove the upper insulation plate and set the insulation plate aside in a safe
location, to avoid damaging.

5. Unfasten the battery straps from battery clamp.

6. Remove the pole protection caps from battery blocks B1 and B5.

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Warning!

Improper handling of batteries can cause them to short-circuit, which can

result in serious injury due to high energy levels. Exercise the necessary care
when working with batteries. Remove any items that can cause short circuits,
such as, rings and bracelets.

Caution!

Batteries can leak electrolyte if improperly handled. Electrolyte in contact

with skin or eyes can cause injury. In the event of electrolyte injuries, rinse
the affected area with water and seek medical attention immediately. Use
protective equipment when replacing batteries.

7. Remove all the interblock connectors between the battery blocks; see Figure
43.

8. Disconnect the 048 V DC battery cable from battery B1; see Figure 49.

Note: If this work is part of fuse upgrade kit, the battery cable must be
replaced with the AWG 1/0 cable provided in the kit. Discard the
existing cable.

9. Protect the cable against short circuits by using insulation tape on the cable
lug.

10. Disconnect the 048 V DC battery cable from battery B5; see Figure 49.

Note: If this work is part of fuse upgrade kit, the battery cable must be
replaced with the AWG 1/0 cable provided in the kit. Discard the
existing cable.

11. Protect the cable against short circuits by using insulation tape on the cable
lug.

12. Put the pole protection caps back on battery blocks B1 and B5 to protect
the batteries against short circuits.

13. Unfasten the cover plate of the fuse connecting bar; see Figure 24.

14. Unfasten the150 A, 200 A, or 250 A fuse; see Figure 24 with details given
in Figure 25.

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 BBU 6102 Maintenance

Bottom

Ge10123A

Figure 24 Remove the Cover Plate of the Fuse Connecting Bar and Replace Fuse

C F
B
A
170 V
F 250 A

170 V
200 A G
170 V
200 A

D
E
P022877A

Figure 25 BBU Fuse Box

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Table 8 Fuse Box Description

Legend Description
A Factory installed fuse, connection to RBS
B Optional second fuse to RBS
C Optional expansion to additional battery backup systems
D Battery cable connection for 048 V DC
E Optional connections for 048 V DC
F Studs for fastening the fuse box cover plate
G Screws for fastening the fuse plate.

15. Replace the150 A, 200 A, or 250 A fuse. Tighten the screws; see Table 2 for
the correct torque.

16. Remove the pole protection caps from battery blocks B1 and B5.

17. Remove the insulation tape from the cable lug.

18. Connect the 048 V DC battery cable to battery block B1. Tighten the screws;
see Table 2 for the proper torque.

19. Remove the insulation tape from the cable lug.

20. Connect the 048 V DC battery cable to battery block B5. Tighten the screws;
see Table 2 for the proper torque.

21. Attach the interblock connectors to battery blocks; see Section 6.11.1.2.6 on
page 78. Tighten the batteries; see Table 2 for the proper torque.

22. Put the pole protection caps back on the battery blocks.

23. Fasten back the cover plate of the fuse connecting bar.

24. Fasten the battery straps, by routing the front battery strap half through the
strap holder in the battery clamp.

Note: Make sure to strap the battery straps in a proper way.

Make sure that the gas ventilation tubes are not squeezed by the
straps.

Do not tighten the straps too firmly; otherwise the pole protection
caps can be damaged.

25. Inform the OMC operator that operation is completed.

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 BBU 6102 Maintenance

6.11 Replace Battery

This section describes how to replace battery blocks in the BBU. Refer to Reference
[3] for instructions regarding handling and connecting batteries.

It is mandatory to read Manage Batteries, Reference [3], before installing the

battery in the cabinet. The document contains important safety precautions to be
taken when handling batteries, and general information about batteries.

For a list of approved battery types, battery dimensions, and battery weights, refer
to Spare Parts Catalog, Reference [4].

Danger!

Explosion risk! Follow instructions and connect the lead-acid batteries in sealed
cabinets to gas ventilation tubes that let highly flammable hydrogen gas out of
the cabinet.

Danger!

Explosion risk! Overheated batteries can result in highly flammable hydrogen

gas in the cabinet that can cause an explosion. Install the battery temperature
sensor(s) according to the instructions.

Caution!

Improper handling of batteries can result in the batteries short-circuiting, which

can result in serious injury due to high energy levels. Exercise the necessary care
when working with batteries.

Note: When replacing battery blocks, always replace all battery blocks.

If the new batteries are a different type than the batteries being replaced,
update the battery parameters in the RBS parameter set; refer to
Reference [3].

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Prerequisites
Before replacing battery blocks, ensure the following:

— All power is disconnected from the battery blocks

— The safety instructions regarding handling and connecting batteries have

been read

— All tools are insulated

6.11.1 Replace One Battery String

Replace one battery string as follows:

1. Make sure that the BFU circuit breaker(s) in the RBS is (are) off. The battery
cables are then not connected to the RBS power.

2. Inform the OMC operator and get approval for temporarily taking the backup
battery system out of service.

3. Open the door with the T-handle.

4. Lift to remove the door from the BBU opening and set aside in a safe location,
to avoid scratching.

5. Remove the upper insulation plate and set the insulation plate aside in a safe
location, to avoid damaging.

6.11.1.1 Remove One Battery String

1. Unfasten the battery straps from battery clamp.

2. Remove the three screws of the battery clamp from the top and remove the
battery clamp.

3. Remove the pole protection caps from battery blocks B1–B4; see Figure 26.

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 BBU 6102 Maintenance

Ge9938A

Figure 26 Remove Pole Protection Caps

4. Remove the interblock connectors from battery blocks B1–B4.

5. Disconnect the 0 V battery cable from battery B4 as is shown for the 150 A
fuse in Figure 27, or for the 200 A fuse in Figure 28.

B1 B2 B3 B4

–48 V cable 0 V cable gas ventilation tube

P023180A

Figure 27 Battery Cables - One Battery String

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B1 B2 B3 B4

–48 V cable 0 V cable gas ventilation tube

P022965B

Figure 28 Battery Cables - One String - AWG 1/0

6. Protect the cable against short circuits by using insulation tape on the cable
lug.

7. Disconnect the 048 V DC battery cable from battery B1 as is shown for the
150 A fuse in Figure 27, or for the 200 A fuse in Figure 28.

8. Protect the cable against short circuits by using insulation tape on the cable
lug.

9. Remove the end stop(s) from battery block(s), the gas ventilation tubes, and
the long gas ventilation tube connected to the gas outlet nipple.

Discard the end-stops and the gas ventilation tubes. Use new end-stops and
the gas ventilation tubes with new battery blocks.

10. Remove battery block B4 from the shelf.

11. Remove the battery temperature sensor cable from battery block B3.

12. Remove the RBS temperature sensor cable from battery block B3.

13. Remove battery blocks B1–B3 from the shelf.

6.11.1.2 Install One Battery String

This section describes the installation of one battery string.

Note: Depending on which version of the system is installed, the R1A with 150
A fuse or the R2A with a 200 A fuse, the cable dimension and battery
cable routing are different.

6.11.1.2.1 Prepare Battery Blocks with Gas Ventilation Tubes

Before the battery blocks are placed in the BBU, it is recommended to attach gas
ventilation tubes to the battery blocks.

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 BBU 6102 Maintenance

One gas ventilation tube kit is always provided with the cabinet.

Do the following to prepare battery blocks with gas ventilation tubes:

1. Check that the gas ventilation tube

kit contains the parts shown in the
illustration.
1
2
The numbers next to the parts are
used in the instructions to refer to, or
identify, the parts.
3

5
Ge9880D

2. EnerSys
NorthStar battery blocks: attach an
end-stop (2) to the left hole and a
1
NorthStar short tube (4) to the right hole of all
NorthStar battery blocks.
2
4
EnerSys Battery blocks: Attach short
tubes (1) to all EnerSys battery blocks.

Ge10642A

6.11.1.2.2 Prepare Battery Blocks with Front-End Adapters and Interblock Spacers

Do the following to prepare battery blocks with front-end adapters:

1. NorthStar: Install front-end adapters on all the battery blocks.

EnerSys: Install front-end adapters on the last and the first battery block
in the battery string.

The illustrations show how to install front end adapters on NorthStar battery
blocks and EnerSys battery blocks respectively.

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P022213A

13 mm

9 Nm

Ge10425A

2. Attach two 7 mm thick interblock spacers to the right-hand side at half the
height of battery blocks B1–B3 as shown in Figure 29 (NorthStar) or Figure 30
(EnerSys). Interblock spacers are attached to battery blocks to provide some
distance between the battery blocks.

If two battery strings are to be installed, attach interblock spacers also on

battery blocks B5–B7.

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 BBU 6102 Maintenance

0.5×H 0.5×H
30 30

Unit of measurement: mm Ge9340A

Figure 29 NorthStar Interblock Spacer Positions

Front

0.5×H 0.5×H

Ge9338A

Figure 30 EnerSys Interblock Spacer Positions

6.11.1.2.3 Install Temperature Sensor Cables

Danger!

Explosion risk! Overheated batteries can result in highly flammable hydrogen

gas in the cabinet that can cause an explosion. Install the battery temperature
sensor(s) according to the instructions.

Note: It is mandatory to use a battery temperature sensor. In case the battery

temperature exceeds +60°C (+140°F), the power system must shut off
the charging.

Temperature sensor cables must be attached to the battery blocks before placing
the battery blocks on the shelf. The climate temperature sensor cable is connected
to the Active Cooling unit or DAC unit climate system controller and the sensor
must be installed on battery block B3.

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P028074B

Figure 31 Temperature Sensor Holder

Note: For RBS 6102 with two power subracks and two BFUs, a second RBS
temperature sensor cable is required, one for each BFU. It must be
installed as close as possible to the first RBS temperature sensor cable.
See Figure 32 and Table 9.

To install temperature sensors, do the following:

1. Uncoil the battery temperature sensor cable.

2. Attach the temperature sensor holder and then the climate temperature
sensor cable to battery block B3, as shown in the detailed part of Figure 32.

3. Repeat the procedure in Step 1 and Step 2, but for RBS temperature sensor
cable, to install the RBS temperature sensor cable.

4. Put battery blocks B1–B4 on the shelf, and route the cables as shown in
Figure 32.

5. Coil and strap the exceeding length of cables.

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23
1

P023027A

Figure 32 The Climate and RBS Temperature Sensor Cables

Table 9 Key to the Climate and RBS Temperature Sensor Cables

Position Description
1 Climate temperature sensor cable
position
2 RBS temperature sensor cable position
(BFU 1)
3 RBS temperature sensor cable position
(1)
(BFU 2)
(1) For RBS 6102 with two power subracks and two BFUs.

6.11.1.2.4 Attach Pole Protection Caps

1. Attach the pole protection caps on battery blocks B1–B4. Remove the
knock-outs in the pole protection caps. The top part is put on the battery block
at this stage. The front part is put on later. See Figure 45.

Note: If a second battery string is also to be installed, attach pole protection

caps on all battery blocks once they have been placed in the cabinet.

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Ge10616A

Figure 33 Attaching Pole Protection Caps—NorthStar

6.11.1.2.5 Install Power Cables for One Battery String

Make sure that the BFU circuit breaker(s) in the RBS is (are) off. The battery
cables are then not connected to the RBS power.

1. Remove the protecting shrink tube that covers the lug of battery cable 048
V DC; see Figure 34.

Caution!

Improper handling of battery blocks can result in the battery blocks

short-circuiting, which can result in serious injury due to high energy levels.
Exercise the necessary care when working with battery blocks.

Caution!

Batteries can leak electrolyte if improperly handled. Electrolyte in contact

with skin or eyes can cause injury. In the event of electrolyte injuries, rinse the
affected area with water and seek medical attention immediately. Use protective
equipment when replacing battery blocks.

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 BBU 6102 Maintenance

Ge10617A

Figure 34 Remove the Protecting Shrink Tube

2. Attach battery cable 048 V DC to battery block B1 as shown in Figure 35

(NorthStar) or Figure 36 (EnerSys). Tighten the cable; see Table 3 for the
correct torque.

Ge10618A

Figure 35 Attach 048 V DC Battery Cable, NorthStar

13 mm

Ge10622A

Figure 36 Attach Battery 048 V DC Cable, EnerSys

3. Route the battery cable as shown in Figure 37 or Figure 38.

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B1 B2 B3 B4

–48 V cable
Ge10732A

Figure 37 Battery Cables — One Battery String

B1 B2 B3 B4

–48 V cable
Ge10731A

Figure 38 Battery Cables — One Battery String - AWG 1/0

Note: If two battery strings are to be installed, stop at this point and follow the
steps in Section 6.11.2.2 on page 86 for two battery strings; if only one
battery string is to be installed, follow the steps below.

4. Remove the protecting shrink tube that covers the lug of battery cable 0 V;
see Figure 34.

5. Attach battery cable 0 V to battery block B4 as shown in Figure 39 (NorthStar)

or Figure 40 (EnerSys). Tighten the cable; see Table 3 for the correct torque.

Ge10620A

Figure 39 Attach 0 V Battery Cable, NorthStar

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 BBU 6102 Maintenance

13 mm

Ge10623A

Figure 40 Attach 0 V Battery Cable, EnerSys

6. For original (150 A) systems, route the 0 V cable as shown in Figure 41. For
systems with revision R2A (200 A) with AWG 1/0, route the cable as shown
in Figure 42.

B1 B2 B3 B4

–48 V cable 0 V cable

Ge10733A

Figure 41 Battery Cables — One Battery String

0 V cable

B1 B2 B3 B4

–48 V cable
Ge10734A

Figure 42 Battery Cables — One Battery String - AWG 1/0

Note: If a second battery string is to be installed, do not attach battery cable

0 V to battery block B4 right now.

6.11.1.2.6 Attach Interblock Connectors

Note: If a second battery string is also to be installed, do not attach the

interblock connectors now. They are attached once all battery blocks
have been placed in the cabinet.

If a second battery string is not to be installed, attach the interblock

connectors now.

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To attach interblock connectors, do the following:

1. Attach the interblock connectors to battery blocks B1–B4; see Figure 43

(NorthStar) or Figure 44 (EnerSys). Tighten the interblock connectors; see
Table 3 for the correct torque.

Ge10735A

Figure 43 NorthStar Interblock Connectors — Example with Front-End

Adapters

10 mm

9 Nm

Ge10426A

Figure 44 EnerSys Interblock Connectors — Example with Front-End Adapters

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 BBU 6102 Maintenance

6.11.1.2.7 Attach Pole Protection Caps and End Terminal Covers

Note: If a second battery string is also to be installed, do not attach the pole
protection caps and the end terminal covers now. They are attached
once all battery blocks have been placed in the cabinet and all interblock
connectors have been attached to them.

If a second battery string is not to be installed, attach the pole protection

caps now.

1. Attach the front parts of the battery pole protection caps on battery blocks.
See Figure 45 (NorthStar) or Figure 46 (EnerSys).

Ge10626A

Figure 45 Attaching Pole Protection Caps — NorthStar

Ge10428A

Figure 46 Attaching the Pole Protection Caps — EnerSys

2. Attach end terminal covers to the battery terminals.

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Ge10429A

3. Strap the end terminal covers.

Ge10433A

6.11.1.2.8 Attach the Rest of the Gas Ventilation Tubes

1. This step is only applicable if the gas ventilation tube kit is changed from
an older version to NTB 101 215/4.

Connect the long gas ventilation tube, SXK 109 1801/4, to the gas outlet
nipple in the cabinet and strap it.

2. Attach the rest of the gas ventilation tubes to NorthStar or EnerSys battery
blocks, strap the long gas ventilation tube, and attach it to the nipple that
leads gas out of the cabinet, as shown in the illustrations.

Make sure that the end-stops (2) are properly attached in the NorthStar
battery blocks.

For both NorthStar and EnerSys batteries, make sure that an end-stop is
attached to the unused hole of the T-connector that is attached to the long
gas ventilation tube.

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 BBU 6102 Maintenance

4×

Out of cabinet

Ge10417B

Out of cabinet

Ge10419B

Note: Ericsson recommends that the gas ventilation test is done after the
BBU installation is completed. See Section 4.3.2.1 on page 21.

6.11.1.2.9 Fasten the Battery Blocks

1. Fasten the battery clamp by fastening the three screws from the top; see
Figure 47.

2. Fasten the battery straps, by routing the front battery strap half through the
strap holder in the battery clamp.

Note: Make sure to strap the battery straps in a correct way; see Figure 48.

Make sure that the gas ventilation tubes are not squeezed by the straps.

Do not tighten the straps too firmly; otherwise the pole protection caps
can be damaged.

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3. Strap the 048 V DC cable and 0 V cable to the battery shelf.

4. Inform the OMC operator that maintenance is completed.

Ge9937A

Figure 47 Putting Back the Battery Clamp

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 BBU 6102 Maintenance

Ge9936A

Figure 48 Fastening the Battery Straps

6.11.2 Replace Two Battery Strings

Replace two battery strings as follows:

1. Make sure that the BFU circuit breaker(s) in the RBS is (are) off. The battery
cables are then not connected to the RBS power.

2. Inform the OMC operator and get approval for temporarily taking the backup
battery system out of service.

3. Open the door with the T-handle.

4. Lift to remove the door from the BBU opening and set aside in a safe location,
to avoid scratching.

5. Remove the upper insulation plate and set the insulation plate aside in a safe
location, to avoid damaging.

6.11.2.1 Remove Two Battery Strings

1. Unfasten the battery straps from battery clamp.

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2. Remove the three screws of the battery clamp from the top and remove the
battery clamp.

3. Remove the pole protection caps from battery blocks B1–B8; see Figure 26.

4. Remove the interblock connectors from all battery blocks.

5. Disconnect the 0 V battery cable from battery block B4, shown in Figure 49 for
the 150 A version, or in Figure 50 for the 200 A version.

B1 B2 B3 B4 B5 B6 B7 B8

–48 V cable 0 V cable

P023181A

Figure 49 Battery Cables - Two Battery Strings

B1 B2 B3 B4 B5 B6 B7 B8

0 V cable –48 V cable

P022966C

Figure 50 Battery Cables - Two Battery Strings - AWG 1/0

6. Protect the cable against short circuits by using insulation tape on the cable
lug.

7. Disconnect the 048 V DC battery cable from battery block B5, shown in Figure
49 for the 150 A version, or in Figure 50 for the 200 A version.

8. Protect the cable against short circuits by using insulation tape on the cable
lug.

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 BBU 6102 Maintenance

9. Disconnect the 048 V DC battery cable from battery block B1, shown in Figure
49 for the 150 A version, or in Figure 50 for the 200 A version.

10. Protect the cable against short circuits by using insulation tape on the cable
lug.

11. Remove the gas ventilation tubes from battery blocks B1–B8.

12. Remove the end cap from battery B1.

13. Remove the battery blocks B4–B7 from the battery shelf.

14. Remove the climate temperature sensor cable from battery block B3.

15. Remove the RBS temperature sensor cable from battery block B3.

16. Remove battery blocks B1–B3 from the battery shelf.

17. Pull out battery block B8 far enough so that the 0 V battery cable connection
can be reached.

18. Disconnect the 0 V battery cable from battery block B8, shown in Figure 49 for
the 150 A version, or in Figure 50 for the 200 A version.

19. Protect the cable against short circuits by using insulation tape on the cable
lug.

20. Remove battery block B8 from the shelf.

6.11.2.2 Install Two Battery Strings

To install two battery strings, do the following:

1. Install the first battery string as shown in Section 6.11.1.2 on page 69.

2. Remove the protecting shrink tube that covers the lug of battery cable 0 V for
the second battery string; see Figure 34.

Note: Make sure that none of the interblock connectors are attached to battery
blocks B1–B4.

3. Attach battery cable 0 V for the second battery string to battery B8. Tighten
the cable; see Table 3 for the correct torque.

4. Put battery blocks B8 and B7 on the shelf, as shown in Figure 51.

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Ge9940A

Figure 51 Install Batteries B7 and B8

5. Put battery blocks B5 and B6 on the shelf.

Caution!

Improper handling of battery blocks can result in the battery blocks

short-circuiting, which can result in serious injury due to high energy levels.
Exercise the necessary care when working with battery blocks.

Caution!

Batteries can leak electrolyte if improperly handled. Electrolyte in contact

with skin or eyes can cause injury. In the event of electrolyte injuries, rinse the
affected area with water and seek medical attention immediately. Use protective
equipment when replacing battery blocks.

6. Remove the protecting shrink tube that covers the lug of battery cable 048
V DC for the second battery string; see Figure 34.

7. For original (150 A ) version: Attach battery cable 048 V DC to battery

B5.Tighten the cable; see Table 3 for the correct torque. Route the cable as
shown in Figure 52.

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B1 B2 B3 B4 B5 B6 B7 B8

–48 V cable –48 V cable 0 V cable

Ge10736A

Figure 52 Battery Cables — Two Battery Strings

8. For systems with revision R2A (200 A ) version: Attach battery cable 048 V
DC to battery B5.Tighten the cable; see Table 3 for the correct torque. Route
the cable as shown in Figure 53.

–48 V cable

B1 B2 B3 B4 B5 B6 B7 B8

–48 V cable 0 V cable

Ge10737A

Figure 53 Battery Cables — Two Battery Strings - AWG 1/0

9. Remove the protecting shrink tube that covers the lug of battery cable 0 V for
the first battery string; see Figure 34.

10. Attach battery cable 0 V to battery B4. Tighten the cable; see Table 3 for
the correct torque. Route the cable as shown in Figure 54, or as shown in
Figure 55.

0 V cable
–48 V cable

B1 B2 B3 B4 B5 B6 B7 B8

–48 V cable 0 V cable –48 V cable 0 V cable

Ge10738A

Figure 54 Battery Cables — Two Battery Strings

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0 V cable –48 V cable

B1 B2 B3 B4 B5 B6 B7 B8

–48 V cable 0 V cable

Ge10739A

Figure 55 Battery Cables — Two Battery Strings - AWG 1/0

11. Attach the interblock connectors to battery blocks B1–B8; see Figure 43
(NorthStar) or Figure 44 (EnerSys). Tighten the interblock connectors; see
Table 3 for the correct torque.

12. Attach the pole protection caps on battery blocks B1–B8; see Section
6.11.1.2.7 on page 79.

13. This step is only applicable if the gas ventilation tube kit is changed from
an older version to NTB 101 215/4.

Connect the long gas ventilation tube, SXK 109 1801/4, to the gas outlet
nipple in the cabinet and strap it.

14. Attach the rest of the gas ventilation tubes to NorthStar or EnerSys battery
blocks, strap the long gas ventilation tube, and attach it to the nipple that
leads gas out of the cabinet, as shown in the illustrations.

Make sure that the end-stops (2) are properly attached in the NorthStar
battery blocks.

8×

Out of cabinet

Ge10418A

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 BBU 6102 Maintenance

Out of cabinet

Ge10420A

Note: Ericsson recommends that the gas ventilation test is done after the
BBU installation is completed. See Section 4.3.2.1 on page 21.

15. Fasten the battery clamp by fastening the three screws from the top as shown
in Figure 47.

16. Fasten the battery straps, by routing the front battery strap half through the
strap holder in the battery clamp.

Note: Make sure to strap the battery straps in a correct way; see Figure 48.

Make sure that the gas ventilation tubes are not squeezed by the straps.

Do not tighten the straps too firmly; otherwise the pole protection caps
can be damaged.

17. Strap the 048 V DC cables and 0 V cables to the battery shelf.

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 Field Upgrades

7 Field Upgrades

The field upgrade is recommended to all customers who want to take advantage
of increased battery backup power. The field upgrade kit consists of the following
five parts.

Note: Before any field upgrade work is begun, make sure that the circuit breaker
on the BFU is off, and the battery cable is disconnected from the BFU.

Make sure that all interblock connectors are removed from the battery
blocks when battery cables are removed, and reattached when the
battery cables are reconnected.

— Replacement of 048 V bar and fuse holder.

— Replacement of 0 V bar.

— Upgrade of battery fuse from the original 150–200 A; see Section 7.1 on
page 94.

— Replacement of battery cables to support higher capacity batteries; see

Section 7.2 on page 95.

— External 048 V power from the RBS to the CLU ; see Section 7.3 on page 96.

Figure 56 is a view from below. In the upper front part, the different power
connections can be seen; Table 10 describes the positions.

The fuse box on the right is normally protected with a cover plate. Figure 57
shows a detail of the fuse box which holds one factory installed 150 A or 200 A
fuse; Table 11describes the positions.

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 BBU 6102 Maintenance

E D

A B C

Bottom

P022880A

Figure 56 Power Connection Points

Table 10 Power Connection Description

Legend Description
A 0 V and grounding bar
B Fuse for CLU, 20 A
C Fuse bar with up to three fuses for battery power connections
(1)
D Power terminal to CLU.
(2)
E Power terminal for incoming power to CLU.
(1) Terminal only installed in systems with revision R2A
(2) Terminal only installed in systems with revision R2A

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C F
B
A
170 V
F 250 A

170 V
200 A G
V
200 A 170

D
E
P022877A

Figure 57 Power Connection Fuses

Table 11 Power Connection Fuses Description

Legend Description
A Fuse connection point to
B Fuse connection point to
C Fuse connection point to for optional additional battery
backup systems
D 048 V battery string connection points
E 048 V connection points
F Studs for fuse box cover plate
G Screws for fuse box installation.

Figure 58 shows the 0 V bar and Table 12 describes the positions.

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 BBU 6102 Maintenance

D
P022967A

Figure 58 0 V Bar

Table 12 0 V Bar
Legend Description
A 0 V bar fastening in original installation with isolating washers
to chassis
B Updated 0 V bar fastening with conducting washers to underlying
bracket
C Connection bar between chassis and 0 V bar.
D New bracket for fastening 0 V bar with improved connectivity
to the chassis.

7.1 Upgrade Battery Fuse from 150 A to 200 A

One portion of the upgrade kit is to replace the main battery fuse, connecting the
two battery strings to the BFU of the RBS. For a detailed description of replacing
or upgrading the fuse to a 200 A version, see Section 6.10 on page 61.

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 Field Upgrades

To replace fuses and power bars, the following procedure is performed.

1. Follow Step 1 through Step 13 as described in Section 6.10 on page 61.

Note: Remove all fuses and battery cables.

2. Remove the 048 V DC bar, by unscrewing the four screws shown as G in

Figure 57.

3. Insert the new 048 V DC bar from the upgrade kit, and tighten the screws.

4. Remove the 0 V bar by unscrewing the nuts shown as A in Figure 58.

5. Insert the new 0 V bar from the upgrade kit.

Note: The removed bar had isolation plates, separating the 0 V bar from the
chassis. The bar to be installed has connection washers to ensure a
good connection between the chassis and the 0 V bar.

6. Ensure that the correct battery cables are in place before connecting cable
to the power bars. Thicker battery cables are supplied in the upgrade kit;
see Section 7.2 on page 95.

7. Follow Step 14 through Step 24, see Section 6.10 on page 61.

7.2 Replace Battery Cables

One portion of the upgrade kit is to replace the battery cables to thicker AWG
1/0 cables. Depending on system configuration, one or two battery strings can
be installed as shown in Figure 49. Both the 0 V cables and the 048 V DC cables
must be replaced.

On the left side of Figure 24, the 0 V busbar is shown. On the right-hand side the
048 DC bar is shown, with details in Figure 25.
To replace battery cables, perform the following procedure.

1. Remove the -48 V DC battery cables from the batteries; see Section 6.10
on page 61.

2. Remove the -48 V DC battery cables, connected to position D in Figure 25,

and discard the cables.

3. Remove the 0 V cables from the batteries.

4. Remove the 0 V battery cables from the busbar, and discard the cables.

5. Install new AWG 1/0 battery cables as shown in Figure 49 .

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Bottom

P022975A

Figure 59 BBU Cable Connections for Upgrade

7.3 Connect External Power Supply to CLU

This section describes how to upgrade the BBU making the CLU to be supplied
by 048 V DC power from the RBS. Depending on product R-state, the BBU has
different factory installed CLU power connections. The product R-state Rxx is the
last part of the BBU product number COH 109 397/29 Rxx.

A BBU with R-state R2A has power connected to the CLU directly from the RBS,
as shown in Figure 60.

Heater
C
F4
CLU

+ – F1
D

+ – F3
E

B A
P022940A

Figure 60 BBU 6102 with External Supply to CLU

A BBU with R-state R1A to R1C has power connected to the CLU from the internal
batteries, as shown in Figure 61.

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 Field Upgrades

Heater

F4 F2
CLU
C

+ – F1
D

+ – F3
E

B A
P022939A

Figure 61 BBU 6102 with Internal Supply to CLU

A BBU with R-state R1A to R1C can be upgraded making the CLU receive power
from the RBS, using upgrade cable kit NTM 101 2577/1.

Or, if upgrading to R2A status, using upgrade cable kit NTM 101 2572/1.

To install the power cable from the Power Distribution Unit (PDU) in the RBS
directly to the climate system controller in the BBU, do the following:

1. Connect the power cable to the PDU in the RBS, and route the cable to the
CLU into the BBU, as shown in Figure 62.

PDU

CLU

SKXXXXA

Figure 62 Connection of the Power Cable between the RBS and the BBU

2. Remove the plastic cover that protects the fuses.

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 BBU 6102 Maintenance

3. Loosen the black cable going to the -48 V DC busbar from the fuse, as shown
in Figure 63.

Ground –48 V

P022522A

Figure 63 0 V Busbar and -48 V DC Busbar

4. Cut the black cable close to the eyelet.

5. Strip 8 mm of insulation from the cable.

6. Cut the terminal of the power cable (black) from the RBS and strip 8 mm
of the insulation.

7. Connect the -48 V DC (black) cable to the black cable from the RBS with a
terminal block.

8. Loosen the screw holding the 0 V (red) cable on the 0 V busbar, as shown
in Figure 63.

9. Cut the 0 V (red) cable close to the eyelet.

10. Cut the terminal of the power cable (gray) from the RBS and strip 8 mm of
the insulation.

11. Connect the 0 V (red) cable to the gray cable from the RBS with a terminal
block.

7.3.1 Connect Additional Grounding Cable to CLU

To connect the additional grounding cable, do the following:

1. Remove the cable strap (if not already done).

2. Place the unstripped 0 V (red) cable to the climate system controller in the run
channel of the Scotchlok™ 562, shown in Figure 64.

Note: Place the Scotchlok 150 mm from the power connection.

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P022358A

Figure 64 Scotchlok 562

3. Insert the unstripped grounding cable into the Scotchlok 562 up to the stop.

4. Use snipe nose pliers to drive down the u-connector until it is in line with the
top of the plastic insulator.

5. Close the hinged top cover. Ensure that the cover latches, as shown in Figure
65.

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 BBU 6102 Maintenance

P022357B

Figure 65 Scotchlok 562 with Closed and Latched Top Cover

6. Remove the M4 screw, holding the cover of the CLU. Place the star washer
under the eyelet and fasten the grounding cable with the screw, as shown
in Figure 66.

Ge10100A

Figure 66 Climate System Control with the Extra Grounding Cable Installed

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 Concluding Routines

8 Concluding Routines

When work is done, do the following:

1. Check that all cables are correctly routed and connected and, where
applicable, the cables are fastened to the top or sides of the cabinet.

2. Test the gas ventilation system, see Section 4.3.2.1 on page 21 or Section
4.3.3.1 on page 26.

3. Check that all covers are in place.

4. Check that the site is clear of waste materials and the cabinet is clear of the
tools listed in Table 1.

5. Insert the upper insulation plate (if removed).

6. Make sure that the cooling system is functioning; see Section 5 on page 31.

7. Put back the door into the BBU opening.

8. Close and lock the BBU door. Make sure that the gas tubes are not in the
way when closing the door.

9. At site commissioning and start of operation, switch on the power from the
RBS.

8.1 Environment
Note: Pay careful attention to the environment when cleaning a site after
installation. In particular, recycle all waste that can be recycled and sort
the rest so that it can be disposed of in accordance with local regulations.

Table 13 shows the recommended methods to take care of waste material after
maintenance.

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Table 13 Waste Sorting and Recycling

Item Recycle or Sort
Bubble plastic Recycle or sort as plastic
Cable insulation from
crimping, brazing, or
welding
Cable pieces, low metallic
content
Cable tie clippings
Foam
Packing chips
Polystyrene
Paper Recycle or sort as paper
Wood Recycle or sort as wood
Cable pieces, high metallic Recycle or sort as metal
content
Metal from cable ladders
Nuts, bolts, washers, and
screws
Battery blocks Dispose of in accordance with local regulations
Refrigeration fluids

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 Reference List

Reference List

Safety

[1] Personal Health and Safety Information, 124 46-2885

[2] System Safety Information, 124 46-2886

General

[3] Manage Batteries, 1/154 43-LZA 701 6009/1

[4] Spare Parts Catalog, 1/154 11-LZA 701 6011

[5] Grounding Guidelines for RBS Sites, 23/1551-LZA 701 6009/1

[6] Customer Site Documentation, specific to the site

[7] Installation Material Overview, 16/1551-LZA 701 6009/1

[8] Installing BBU 6102, 10/1531-LZA 701 6009

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