
Chapter
12
116
ML-9011A
Chapter
12
Maintenance
The Control Unit includes a lithium backup battery for clock. If this battery runs out, the time information
will be lost when the MAIN POWER switch of the Control Unit is turned off. To prevent this, purchase a
new battery from us and replace the battery under either of the following conditions:
•
Three years have passed since battery replacement
•
The battery error appears
Have the following items ready when replacing the lithium battery:
•
Lithium battery (new)
•
Phillips screwdriver
1
On the Control Unit, turn off the MAIN POWER switch on the front and the circuit breaker (main
power supply) on the back.
2
Unscrew the two screws on the back of
the Control Unit.
3
Remove the cover by sliding it back
about 15 mm and lifting it up.
12.7Backup Lithium Battery Replacement
Follow your local environmental regulations for battery disposal, as the lithium battery
contains potentially harmful substances.
Screws
(M3)
Slide the cover back
about 15 mm, then
lift it.
Cover