Nokia SSS1100 User manual

Document Number/Version ©1999 Nokia Telecommunications Oy
NTC DN9986052/1.0.0
SSS1100 / 1100+ AND SSS2 OUTDOOR
Maintenance Manual

Maintenance Manual
Page ©1999 Nokia Telecommunications Oy Document Number/Version
(ii)NTC DN9986052/1.0.0
The information in this document is subject to change without notice and describes only the
product and its version defined in the introduction of this document. This document is intended for
the use of Nokia Telecommunications' customers only for the purposes of the agreement under
which the document is submitted, and no part of it may be reproduced or transmitted in any form
or means without the prior written permission of Nokia Telecommunications. The document has
been prepared to be used by professional and properly trained personnel, and the customer
assumes full responsibility when using it. Nokia Telecommunications welcomes customer
comments as part of the process of continuous development and improvement of the
documentation.
The information or statements given in this document concerning the suitability, capacity, or
performance of the mentioned hardware or software products cannot be considered binding but
shall be defined in the agreement made between Nokia Telecommunications and the customer.
However, Nokia Telecommunications has made all reasonable efforts to ensure that the
instructions contained in the document are adequate and free of material errors and omissions.
Nokia Telecommunications will, if necessary, explain issues which may not be covered by the
document.
Nokia Telecommunications' liability for any errors in the document is limited to the documentary
correction of errors. Nokia Telecommunications WILL NOT BE RESPONSIBLE IN ANY EVENT
FOR ERRORS IN THIS DOCUMENT OR FOR ANY DAMAGES, INCIDENTAL OR
CONSEQUENTIAL (INCLUDING MONETARY LOSSES), that might arise from the use of this
document or the information in it.
This document and the product it describes are considered protected by copyright according to
the applicable laws.
NOKIA logo is a registered trademark of Nokia Corporation.
Other product names mentioned in this document may be trademarks of their respective
companies, and they are mentioned for identification purposes only.
Copyright © Nokia Telecommunications Oy1999. All rights reserved.

Maintenance Manual
Document Number/Version ©1999 Nokia Telecommunications Oy Page
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INTERNAL HISTORY PAGE
Archive
Location: \\ntcsrv03ca\groupdat\SiSo\ET2 Family
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Filename: Maintenance manual.doc
History
Date Version Author Change Note No./Notes
18 March 99 0.0.1 Tyrone Williams First Draft
28 July 99 1.0.0 Tyrone Williams Authorised

Maintenance Manual
Page ©1999 Nokia Telecommunications Oy Document Number/Version
(iv)NTC DN9986052/1.0.0
APPROVAL PAGE
Edited/Translated by: T Williams Date:
Checked by: A Weeber Date:
Approved by: M Weckström Date:

Maintenance Manual
Document Number/Version ©1999 Nokia Telecommunications Oy Page
NTC DN9986052/1.0.0 1(27)
CONTENTS
1. INTRODUCTION..................................................................................................4
1.1. Fault reporting...............................................................................................4
1.2. Environmental restrictions.............................................................................4
2. TOOLS AND TEST EQUIPMENT........................................................................6
2.1. Maintenance tools list....................................................................................6
2.1.1. SSS1100 / 1100+ and SSS2 cabinet located with a BTS...................7
3. PERIODICAL MAINTENANCE MEASURES .....................................................8
3.1. Cabinet maintenance......................................................................................8
3.1.1. Cleaning the SSS1100 / 1100+ and SSS2.........................................8
3.1.2. Access to the plinth base..................................................................8
3.1.3. Cabinet paint....................................................................................9
3.1.4. Lock..............................................................................................10
3.1.5. Hinges ...........................................................................................10
3.1.6. Seals..............................................................................................10
3.1.7. Cabinet interior check....................................................................13
3.2. Site..............................................................................................................13
4. HMU MAINTENANCE.......................................................................................14
4.1. Cleaning fans...............................................................................................14
4.2. Cleaning the exchanger plates (ACU)..........................................................15
4.3. Replace drain tube (ACU) ...........................................................................15
4.4. Cleaning the recuperator (HE).....................................................................16
5. BATTERY BACKUP UNIT ................................................................................17

Maintenance Manual
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5.1. Visual checks.............................................................................................. 17
5.1.1. External damage............................................................................ 17
5.1.2. Pressure spots ............................................................................... 17
5.1.3. Deformities................................................................................... 17
5.1.4. Corrosion of battery terminals....................................................... 18
5.1.5. Acid escape................................................................................... 18
5.1.6. Accessories check......................................................................... 18
5.2. Mechanical checks...................................................................................... 18
5.2.1. Terminal screws torque check....................................................... 19
5.2.2. Battery terminals greased.............................................................. 19
5.3. Environmental conditions ........................................................................... 19
5.3.1. Battery ventilation......................................................................... 20
5.3.2. Battery compartment temperature ................................................. 20
5.4. General measurements................................................................................ 20
5.4.1. Batteries idle voltage..................................................................... 21
5.4.2. Entire float charge voltage............................................................. 21
5.4.3. Single float charge voltage............................................................ 21
5.5. Completing the BBU maintenance.............................................................. 22
6. SMOKE DETECTOR.......................................................................................... 23
7. MAINTENANCE CHECKLIST.......................................................................... 25
8. REFERENCES.................................................................................................... 27

Maintenance Manual
Document Number/Version ©1999 Nokia Telecommunications Oy Page
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Maintenance Manual
Page ©1999 Nokia Telecommunications Oy Document Number/Version
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1. INTRODUCTION
This document describes the maintenance of the SSS1100 / 1100+ and SSS2
cabinets as a post-integration function check. This document is to be used together
with [8] and [9]. This document is intended for the service personnel of the network
operator.
The SSS1100 / 1100+ and SSS2 cabinets are designed to work in conjunction with
a Nokia DE / DF 34 Base Station and contain three main functions. They supply
DC power to the Base Station, house a battery backup system and provide space
and DC power for customer chosen and supplied RLEs.
The task of the maintenance is to check the functions of the SSS1100 / 1100+ and
SSS2 and its inventory periodically.
The maintenance is to be undertaken every six months using [3].
In special cases, e.g. dusty ambient conditions, shorter maintenance intervals may
be required. This should be decided at the discretion of Nokia and the customer.
1.1. Fault reporting
All damage, failures and faults should be corrected, wherever possible, during
installation of the cabinet, and reported to Nokia using a Failure Report Form
provided by the Customer Service Centre (CSC).
Update the site folder after maintenance measures or modifications.
1.2. Environmental restrictions
When doing maintenance work on the SSS1100 / 1100+ and SSS2 cabinet with the
front door or the roof open, follow the restrictions below:
1. Rain or snow must not be allowed to fall on the internal surfaces of the
equipment. The internal surfaces are the front panels, cables, connectors
and documentation.
2. The door must not be opened in environments where dust can be blown
into the cabinet through the open door.
3. If a cabinet door is opened in low temperatures (below +5°C), an adequate
heating and weather protection must be provided for the cabinet, in order
to maintain the cabinet temperature above +5°C.

Maintenance Manual
Document Number/Version ©1999 Nokia Telecommunications Oy Page
NTC DN9986052/1.0.0 5(27)
4. Avoid keeping the cabinet door open in high temperatures in order not to
disturb the cabinet cooling system.
5. Exercise great caution when opening a cabinet's roof in strong wind
conditions. A forceful wind may tear the roof panel off its hinges, and the
falling roof panel may cause danger to personnel and damage to the
equipment. Always secure the roof into position with the roof arrester.
6. Exercise great caution when opening a cabinet's door in strong wind
conditions. A forceful wind may open or close the door with such force
that it can cause danger to personnel and damage to the equipment.
Always secure the door into position with the door arrester.

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Page ©1999 Nokia Telecommunications Oy Document Number/Version
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2. TOOLS AND TEST EQUIPMENT
This chapter details the tools and the measurement equipment required for the
maintenance of the SSS1100 / 1100+ and SSS2 cabinet.
2.1. Maintenance tools list
The essential commissioning tools are detailed below. A more detailed list of the
maintenance tools can be obtained from your nearest CSC.
Table 1Maintenance tools
No Item
1Anti-static hand strap
2Socket wrench, 10mm
3Screwdriver set, flat
4Screwdrivers, pozi-drive (cross head), sizes 1, 2 and 3
5Synthetic test gas for smoke sensor testing
6Hot air fan 230 AC, adjustable temperature
7Freezing spray
8BTS door key and door handle
9Compressed air for cleaning HE
10 Brush/cloths for cleaning, pH-neutral soap solution if necessary
11 Digital Multimeter
12 Voltmeter
13 Insulated torque spanner, 11 mm (6.78 Nm)