Mitsubishi Electric FR-A820-00046 Instruction Manual page 937

Precautions for maintenance and inspection
Area of in-
Inspection item
spection
Operation check
Control
circuit,
protective Overall
circuit
Aluminum
electrolytic
capacitor
Cooling fan
Cooling
system
Heatsink
Indication
Display
Meter
Load
Operation check
motor
Tab. 7-1: Daily and periodic inspection (2)
Oil component of the heat dissipation grease used inside the inverter may leak out. The oil
component, however, is not flammable, corrosive, nor conductive and is not harmful to humans.
Wipe off such oil component.
It is recommended to install a voltage monitoring device for checking the voltage of the power
supplied to the inverter.
One to two years of periodic inspection cycle is recommended. However, it differs according to the
installation environment.
Consult us for periodic inspection.
CAUTION:
E
Continuous use of a leaked, deformed, or degraded smoothing aluminum electrolytic capacitor
(as shown in the table above) may lead to a burst, breakage or fire. Replace such a capacitor
without delay.
FR-A800
Description
(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 page 7-6.)
(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.
Check for vibration and abnormal increase in
operation noise.
Inspection
interval
Corrective action at
fault occurrence
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.
Stop the equipment and
contact the
manufacturer.
Inspection item
Check by
the user
7 - 3