Siemens S5-135U/155U System Manual page 110

Central Controllers and Expansion Units Power Supply Units
Replacing the
Rechargeable
Battery
Location of the
The rechargeable battery is situated in the right-hand fan subassembly.
Rechargeable
Battery
Caution
!
Do not place the rechargeable battery in contact with fire or heat and do not
short-circuit it.
The rechargeable battery must not be destroyed or disassembled!
Nickel-cadmium batteries contain an alkali electrolyte which can harm the
skin and damage clothing.
If your skin or your eyes make contact with the electrolyte, rinse
immediately with clean water and consult a doctor.
Before If you operate your power supply with a filter, you must first release the filter
Replacement
subdrawer and pull it out before dismantling the right-hand fan and replacing
the rechargeable battery (see section entitled "Replacing the Filter Mat."
How to Replace The rechargeable battery can be replaced during operation. Proceed as
the Rechargeable
follows:
Battery
4-44
Step
1 Insert a screwdriver (DIN 5265, blade width 3.5-6.5 mm) into the
right-hand unlock fan opening.
Swing the right-hand fan subassembly out (by placing your finger in the
2
round opening on the underside at the front and pulling downwards).
Result: "Fan 3" LED indicates failure of the right-hand fan and
the other two fans operate at increased speed.
3 Slacken the screws on the bottom of the fan subassembly and pull out the
rechargeable battery.
4 Disconnect the connecting cable of the rechargeable battery.
5 Connect the cable to the new rechargeable battery.
Important:
Ensure correct polarity (red terminal on plus, black terminal on minus, see
figure "Replacing the rechargeable battery in the fan subassembly").
6 Insert the new rechargeable battery pack in the left-front part of the fan
subassembly (plus pole to the right). Ensure that the black connecting cable
is lying on the floor of the battery compartment when you insert the battery.
Secure it with the screws from below.
7 Insert the fan subassembly with the tab at the rear into the housing and
swivel it up until it locks in place.
8 Press the Reset button.
With a fully discharged battery, the message can only be acknowledged
after at least 6 minutes.
Action
System Manual
C79000-G8576-C199-06