Daily And Periodic Inspection - Mitsubishi Electric FR-F800 Instruction Manual

7.1.3

Daily and periodic inspection

Area of
Inspection item
inspection
Surrounding
environment
General Overall unit
Power supply
voltage
General
Conductors, cables
Transformer/
Main
reactor
circuit
Terminal block
Smoothing
aluminum
electrolytic
capacitor
Relay/contactor
Operation check
Control
circuit,
protective Overall
circuit
Aluminum
electrolytic
capacitor
Cooling fan
Cooling
system
Heatsink
Indication
Display
Meter
Description
Check the surrounding air temperature, humidity,
dirt, corrosive gas, oil mist, etc.
Check for unusual vibration and noise.
Check for dirt, oil, and other foreign material.
Check that the main circuit voltages and control
voltages are normal.

(1)Check with megger (across main circuit terminals
and earth (ground) terminal).
(2)Check for loose screws and bolts.
(3)Check for overheat traces on the parts.
(4)Check for stain.
(1)Check conductors for distortion.
(2)Check cable sheaths for breakage and
deterioration (crack, discoloration, etc.).
Check for unusual odor and abnormal increase of
whining sound.
Check for a damage.
(1)Check for liquid leakage.
(2)Check for safety valve projection and bulge.
(3)Visual check and judge by the life check of the
main circuit capacitor. (Refer to
Check that the operation is normal and no
chattering sound is heard.
(1)Check that the output voltages across phases are
balanced while operating the inverter alone.
(2)Check that no fault is found in protective and
display circuits in a sequence protective operation
test.
(1)Check for unusual odor and discoloration.
(2)Check for serious rust development.
(1)Check for liquid leakage in a capacitor and
deformation trace.
(2)Visual check and judge by the life check of the
control circuit capacitor. (Refer to
(1)Check for unusual vibration and noise.
(2)Check for loose screws and bolts.
(3)Check for stain.
(1)Check for clogging.
(2)Check for stain.
(1)Check that display is normal.
(2)Check for stain.
Check that reading is normal.
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
Inspection
interval
Daily Periodic
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page 566.)
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page 566.)
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Inspection item
Corrective action Check
at fault by the
occurrence user

Improve the
environment.
Check fault location
and retighten.
Clean.
Inspect the power
supply.
Contact the
manufacturer.
Retighten.
Contact the
manufacturer.
Clean.
Contact the
manufacturer.
Contact the
manufacturer.
Stop the equipment
and contact the
manufacturer.
Stop the equipment
and contact the
manufacturer.
Contact the
manufacturer.
Contact the
manufacturer.
Contact the
manufacturer.
Contact the
manufacturer.
Contact the
manufacturer.
Stop the equipment
and contact the
manufacturer.
Contact the
manufacturer.
Contact the
manufacturer.
Replace the fan.
Fix with the fan
cover fixing screws
Clean.
Clean.
Clean.
Contact the
manufacturer.
Clean.
Stop the equipment
and contact the
manufacturer.
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