Mitsubishi MELIMP Series Instruction Manual page 74

Table 6-5 Periodic Inspection List
Area of
Inspection
1) Check ambient temperature,
humidity, vibration, ambience (for
dust, dirt, gas, oil mist, water
Surrounding
drops, etc.)
environment
2) Check for tools, foreign matter
and dangerous articles in the
periphery.
Check for unusual vibration and
Overall unit
unusual noise.
1) Check for loose screws and bolts.
2) Check parts and members for
deformation, crack, damage, and
General discoloration caused by overheat
or deterioration.
3) Check for contamination and
sticking dust and dirt.
1) Check conductors for
discoloration and distortion
Conductors,
caused by overheat.
cables
2) Check cable sheaths for
breakage and discoloration.
Terminal Check for damage.
block
Check for foul odor and insulation
Resistor
crack due to overheat.
1) Check for loose screws, bolts and
connectors.
Control 2) Check for unusual odor and
printed discoloration.
circuits, 3) Check for crack, damage,
connectors deformation, and rust.
4) Check capacitor for liquid leakage
and traces of deformation.
1) Check for sticking foreign matter.
2) Check for loose connection.
Cooling fan
Check for clogged heat sink,
Ventilation
suction/exhaust ports, and sticking
path
foreign matter.
Inspection Items
6-11
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6. TROUBLESHOOTING
Methods
1) Measure visually or
with instruments.
• Thermometer
• Hygrometer
• Recorder
2) Visual check.
Visual and auditory
checks.
1) Retighten.
2), 3) Visual check.
1), 2) Visual check.
Visual check.
Olfactory, visual
checks.
1) Retighten.
2) Olfactory, visual
checks.
3), 4) Visual check.
1) Hand turn.
2) Visual check
Visual check.
Criteria
1) Standard
specification
values must be
satisfied.
2) Must not be left
unremoved.
No fault.
1), 2), 3) No fault.
1), 2) No fault.
No fault.
No fault.
1), 2), 3), 4) No fault.
1) Smooth turn.
2) No fault.
No fault.
6