1. Turn the lid on the back of the control panel counter-clockwise until the lid opens.
2. Remove the battery gently.
3. Replace the battery with a new CR2032 battery. The battery holder has grip nails.
First slide the battery and then press on the other side. The battery will snap in.
4. Make sure that the battery polarity shows positive on the upside.
5. Put the lid back and tighten it by turning it clockwise.
6. Dispose of the old battery according to local disposal rules or applicable laws.
ZCU-12 control unit
￭ Replacing the memory unit of ZCU-12
After replacing a control unit, you can retain the existing parameter settings by transferring
the memory unit from the defective control unit to the new control unit. After power-up, the
drive will scan the memory unit. This can take several minutes.
WARNING!
Do not remove or insert the memory unit when the control unit is powered.
Maintenance 193
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