Mitsubishi Electric C70 Connection Manual page 14

(6) Maintenance, inspection and part replacement
Periodically back up the programs, tool data and parameters to avoid potential data loss. Also, back up those
data before maintenance and inspections.
When replacing the battery on the controller side, the machining programs, tool data and parameters, etc.,
should be backed up with the input/output device beforehand.
In case the memory is damaged in replacing the batteries, reload all the data backed up before the alarm
occurrence.
The electrolytic capacitor's capacity will drop due to deterioration. To prevent secondary damage due to
capacitor's faults, Mitsubishi recommends the electrolytic capacitor to be replaced approx. every five years
even when used in a normal environment. Contact the Service Center or Service Station for replacements.
Do not perform a megger test (insulation resistance measurement) during inspection.
Do not replace parts or devices while the power is ON.
Do not short-circuit, charge, overheat, incinerate or disassemble the battery.
There may be a unit filled with substitute Freon in the heat radiating fins of the 37kW or smaller unit. Be careful
not to break the heat radiating fins during maintenance or replacement.
(7) Disposal
Take the batteries and backlights for LCD off from the controller, servo drive unit and servomotor, and dispose
of them as general industrial wastes.
Do not alter or disassemble controller, servo drive unit, or servomotor.
Dispose of the spent batteries and the backlights for LCD according to the local laws.
(8) General precautions
To explain the details, drawings given in this instruction manual, etc., may show the unit with the cover or safety partition
removed. When operating the product, always place the cover or partitions back to their original position, and operate as
indicated in the instruction manual, etc.
CAUTION
CAUTION