ABB ACH550-UH-011A-6 User Manual page 398

ACH550-01 User's Manual
Control panel
Cleaning
Use a soft damp cloth to clean the control panel. Avoid harsh
cleaners which could scratch the display window.
Battery
The battery keeps the clock operating in memory during power
interruptions.
To remove the battery, use a coin to rotate the battery holder on
the back of the control panel. Replace the battery with type
CR2032.
Diagnostics and maintenance
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