Nokia SSS1100 - Page 6

Maintenance Manual
Page © 1999 Nokia Telecommunications Oy Document Number/Version
2 (27) NTC DN9986052/1.0.0
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