Maintenance And Repairs - Siemens S5-155U System Manual

4.3.4

Maintenance and Repairs

Lithium battery
Fans
Rechargeable battery
Filter mat
System Manual
C79000-B8576-C199-03
The lithium battery should be replaced when a battery failure is
indicated. The backup times of the lithium battery are given in the
following table:
I mA 0.25
backup
New battery,
backup time in weeks 81.5
Battery 3 years old,
backup time in weeks 64.2
If a fan fails, replace it as quickly as possible. The behavior of the
power supply in the event of fan failure is described in Section 4.3.5.
The rechargeable battery should be replaced at regular intervals
(service life of 6 years at 40
failed power supply and failed battery, the backup times of the
rechargeable battery are as follows:
I mA 0.25
backup
Backup time in weeks 18.8
The replacement intervals for the filter mat (with the air filter option)
depend on the ambient conditions under which the power supply unit
is in operation.
Power Supply Units
1 2 3
27.4 14.5 9.9
21.6 11.5 7.8
o o
C (104 F) ambient temperature). With a
1 2 3
6.3 3.4 2.3
4 5
7.5 6.0
4
5.9 4.8
4 5
1.7 1.4
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