Siemens NCU 7x0.3 PN Series - Replacing the Dual Fan; Battery Module

Spare Parts/Accessories
10.1 Dual fan/battery module
NCU 7x0.3 PN
160 Manual, 09/2011, 6FC5397-1EP40-0BA0
Battery
A 3 V lithium battery can be inserted in the dual fan/battery module. The battery is pre-
assembled with an approximately 4 cm long cable with plug connector. The appropriate
mating connector is attached to a small circuit board for connection in the dual fan/battery
module.
Note
Please dispose of used batteries in the specially provided collection points on site. This will
ensure they are reused in the correct manner or treated as special waste.
NOTICE
The backup time of a used type of battery is at least 3 years. Exceeding this backup time
risks loss of data.
10.1.2 Replacing the dual fan/ battery module
Procedure
Proceed as follows to replace the dual fan/battery module but only observe points 3 and 4 if
you want to replace the battery as well:
1. Gently push the dual fan/battery module backwards (by pressing on the pressure point) to
release the module from its front interlock (snap-in hooks).
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CAUTION
Never pull the dual fan/battery module out abruptly without having released the
interlock. This would break the snap-in hooks and you would not be able to reinsert the
module.
2. Tilt the dual fan/battery module forwards at an angle and pull out the plastic guide from
the Control Unit cutout.