Mitsubishi Electric FR-A820-00046 (0.4K), Instruction Manual

Page: 1093 / 1218

Precautions for maintenance and inspection Inspection item
FR-A800 7 - 3
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.
Control
circuit,
protective
circuit
Operation check
(1) Check that the output voltages across phases
are balanced while operating the inverter alone.
4
Contact the
manufacturer.
(2) Check that no fault is found in protective and
display circuits in a sequence protective
operation test.
4
Contact the
manufacturer.
C
o
mponen
ts c
h
eck
Overall
(1) Check for unusual odor and discoloration.
4
Stop the equipment and
contact the
manufacturer.
(2) Check for serious rust development.
4
Contact the
manufacturer.
Aluminum
electrolytic
capacitor
(1) Check for liquid leakage in a capacitor and
deformation trace.
4
Contact the
manufacturer.
(2) Visual check and judge by the life check of the
control circuit capacitor. (Refer to page 7-6.)
4
Cooling
system
Cooling fan
(1) Check for unusual vibration and noise.
4
Replace the fan.
(2) Check for loose screws and bolts.
4
Fix with the fan cover
fixing screws
(3) Check for stain.
4
Clean.
Heatsink
(1) Check for clogging.
4
Clean.
(2) Check for stain.
4
Clean.
Display
Indication
(1) Check that display is normal.
4
Contact the
manufacturer.
(2) Check for stain.
4
Clean.
Meter Check that reading is normal.
4
Stop the equipment and
contact the
manufacturer.
Load
motor
Operation check
Check for vibration and abnormal increase in
operation noise.
4
Stop the equipment and
contact the
manufacturer.
E
CAUTION:
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.
Area of in-
spection
Inspection item Description
Inspection
interval
Corrective action at
fault occurrence Check by
the user
Da
il
y
Pe
ri
od
ic
Tab. 7-1: Daily and periodic inspection (2)