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SDF 250/400/500
Maintenance 5-12
5.5. Changing the battery of the control system
This work may be carried through only by qualified personnel
trained in the field of electrical engineering.
F The battery may be changed only with the control system
switched on.
Open the control box by means of the control box key which is part of the supply.
Open the front door of the CPU.
Pull the backup battery with cable out of the compartment.
Plug the connector of the new backup battery into the corresponding socket in the battery
compartment of the CPU.
& The notch on the battery connector must point to the left!
Place the backup battery into the battery compartment on the CPU.
Close the front door of the CPU
Close the control box.