Siemens SINUMERIK 840D sl Manual page 89

Proceed as follows
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
2. Tilt the dual fan/battery module forwards at an angle and pull out the plastic guide from
3. Remove the battery by first removing the plug connector and then taking out the battery.
4. Connect the cable plug connector of the new battery to the mating connector in the dual
Figure 11-2
5. Tilt the dual fan/battery module forwards at an angle with the open side facing up (battery
6. Push the plastic guide into the cutouts on the underside of the Control Unit.
7. Tilt the dual fan/battery module up until the front interlock snaps into place.
NCU
Manual, 03/2010, 6FC5397-0AP10-3BA0
release the module from its front interlock (snap-in hooks).
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.
the Control Unit cutout.
fan/battery module and push the battery in.
Battery replacement in the dual fan/battery module
visible).
The electrical connection between the dual fan/battery module and the Control Unit is
established automatically.
NOTICE
To avoid loss of data, the dual fan/battery module must be replaced during operation.
When doing this, observe that the Control Unit can only be operated for a maximum of
1 minute without fans. If this time is exceeded, the Control Unit will shut itself down.
Spare Parts/Accessories
11.1 Dual fan/ battery module
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