FVR-C11S-EN
8-1
8 Maintenance and Inspection
8
8 Maintenance
and Inspection
Execute the daily inspection and periodic in-
spection for preventing a fault and ensuring
long-term reliability.
Note the following regarding the work.
8-1 Daily Inspection
During the operation and conduction, the visual
inspection for abnormal operation is executed
from the outside without removing the covers.
Inspections are usually done to check the follow-
ing:
1. The expected performance (satisfying the
standard specification) is obtained.
2. The environment satisfies the standard spec-
ification.
3. The keypad panel display is normal.
4. There are no abnormal sound, vibrations or
unpleasant odors.
5. There are no overheating marks or discolora-
tion.
8-2 Periodic Inspection
The periodic inspection must be executed after
stopping the operation and cutting off the power
source and removing the surface cover.
After power-off, time is needed for the smoothing
capacitors in the DC section in the main circuit to
discharge. To prevent electric shock, make sure
that the voltage falls down to the safety value
(25VDC and below) using a multimeter after the
charge lamp (CRG) goes off.
WARNING
1. Start inspection five minutes or more after
turning off the power supply. (Check that
the charge lamp (CRG) goes off, and
check the voltage is 25V DC or below be-
tween terminals P(+) and N(-).
There is danger of electric shock.
2. Only the designated person can perform
the maintenance and replace components.
(Take off any metal objects such as a
watch or ring.)
(Use insulated tools.)
3. Never modify the inverter.
There is danger of electric shock or in-
jury.
