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
To Next Page