Mitsubishi Electric FR-S500 Series Instruction Manual page 77

Precautions for maintenance and inspection
Inspection
Item
Operation
check
Overall
Aluminum
electrolytic
capacitor
Cooling fan
Heatsink
Air filter, etc.
Indication
Meter
Operation
check
*1 It is recommended to install a device to monitor voltage for checking the power supply
voltage to the inverter.
*2 One to two years of periodic inspection cycle is recommended. However, it differs according
to the installation environment.
Consult us for periodic inspection.
Inspection Item
(1)Check that the output voltages
across phases with the inverter
operated alone is balanced
(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
trance
(2) Visual check and judge by the life
check of the control circuit
capaci tor. (Refer to page 73.)
(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 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
Interval
72
Corrective
Action at Alarm
Occurrence
Contact the
manufacturer
Contact the
manufacturer
Stop the device
and contact the
manufacturer.
Contact the
manufacturer
Contact the
manufacturer
Replace the fan
Retighten
Clean
Clean
Clean
Clean or replace
Clean or replace
Contact the
manufacturer
Clean
Stop the device
and contact the
manufacturer.
Stop the device
and contact the
manufacturer.