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8 Maintenance and Inspection
8-2
FVR-C11S-EN
8
Check part
Check item
How to inspect
Evaluation criteria
Environment
1. Check the ambient air tem-
perature, humidity, vibra-
tion, atmosphere (dust, gas
oil mist, waterdrops)
2. Are foreign matter or dan-
gerous objects such as
tools not left around the
equipment?
1. Measure by visu-
al inspection and
the meter.
2. With visual in-
spection
1. The specified stand-
ard value must be
satisfied.
2. No foreign matter or
dangerous objects
left near the inverter?
Voltage
Are the voltages in the main
circuit and the control circuit
normal?
Measure with the
multimeter.
The specified standard
value must be satisfied.
Keypad panel
1. Is the display hard to read?
2. Are the characters com-
plete?
1., 2. Visual
inspection
1., 2. The display can
be read and is not
abnormal.
Structure such
as a frame or
cover
1. Abnormal sound or vibra-
tion?
2. Loose bolts (part to be
tightened) ?
3. Deformation or damage?
4. Discoloration by
overheating?
5. Stains and dust?
1. With Visual in-
spection and
hearing
2. Tighten more
3., 4., 5.
With visual
inspection
1., 2., 3., 4., 5.
Not abnormal.
Main circuit
Comon
1. Loose and missing bolts?
2. Deformation, cracks, dam-
age, and discoloration by
overheating and deteriora-
tion in the equipment and
the insulation?
3. Stains and dust?
1. Tighten more
2., 3. Visual
inspection
1., 2., 3.
Not abnormal.
Note:
A discolored
short-circuiting
bar does not
indicate a
problem.