Maintenance and Inspection
T
roub
leshooting
and Maintenance
6–18
Note 1:
The life of a capacitor is affected by the ambient temperature. See
“Capacitor Life
Curve” on page 6–20
.
Note 2:
The inverter must be cleaned periodically. If dust accumulates on the fan and heat
sink, it can cause overheating of the inverter
.
Motor
General
Vibration
✔
Visual, touch
Ordinary range
Unusual odor
✔
Look for signs of
overheating
Normal appearance
Insulation
resistance
Isolation
boundary
fault
✔
Disconnect motor
from inverter, do
megger test on
motor
500V class megger test
must pass
Item Inspected
Check for...
Inspection
Cycle
Inspection Method
Criteria
Month
Year