Siemens S5-135U/155U appendix Central Controllers and Expansion Units Power Supply Units

Central Controllers and Expansion Units Power Supply Units

Replacing the

Rechargeable

Battery

Location of the

Rechargeable

Battery

!

Before

Replacement

How to Replace the Rechargeable Battery

The rechargeable battery is situated in the right-hand fan subassembly.

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.

If you operate your power supply with a filter, you must first release the filter subdrawer and pull it out before dismantling the right-hand fan and replacing the rechargeable battery (see section entitled ªReplacing the Filter Mat.º

The rechargeable battery can be replaced during operation. Proceed as follows:

Step Action

1Insert a screwdriver (DIN 5265, blade width 3.5-6.5 mm) into the right-hand unlock fan opening.

2Swing the right-hand fan subassembly out (by placing your finger in the round opening on the underside at the front and pulling downwards).

Result:ªFan 3º LED indicates failure of the right-hand fan and the other two fans operate at increased speed.

3Slacken the screws on the bottom of the fan subassembly and pull out the rechargeable battery.

4Disconnect the connecting cable of the rechargeable battery.

5Connect the cable to the new rechargeable battery.

Important:

Ensure correct polarity (red terminal on plus, black terminal on minus, see figure ªReplacing the rechargeable battery in the fan subassemblyº).

6Insert 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.

7Insert the fan subassembly with the tab at the rear into the housing and swivel it up until it locks in place.

8Press the Reset button.

With a fully discharged battery, the message can only be acknowledged after at least 6 minutes.

4-44	System Manual
	C79000-G8576-C199-06