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Siemens S5-135U/155U User Manual

Page 109

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4-43

System Manual
C79000-G8576-C199-06

The following figure shows how to release the fan lock:

Unlock
fan

Unlock
fan

Unlockfan

Unlockfan

Replace by
trained personnel
only!

Batt.3,6V/5Ah

SIEMENS

Use battery holder
C98100-A1155-B21
only!

1

2

3

4

5

67

89

10

After replacement, press the Reset button, the monitor will become active 6
secs after the Reset button is pressed.

IF...

THEN...

the relevant “Fan” LED goes off,

the fan is correctly installed.

the relevant “Fan” LED does not go off,

the fan is incorrectly installed. Make a
step-by-step check to ensure correct
replacement.

the relevant “Fan” LED goes off but the
“Warning” relay does not pick up,

another fan has failed and another “Fan”
LED lights up. Replace the second fan
also.

Releasing the Fan
Lock

After Replacement

Central Controllers and Expansion Units Power Supply Units