Mitsubishi Electric FR-A820-00046 Instruction Manual page 1097

Precautions for maintenance and inspection
Replacement procedure of the cooling fan
The replacement interval of the cooling fan used for cooling the parts generating heat such as the
main circuit semiconductor is greatly affected by the surrounding air temperature. When unusual
noise and/or vibration are noticed during inspection, the cooling fan must be replaced immediately.
● Removal (FR-A820-00105(1.5K) to 04750(90K), FR-A840-00083(2.2K) to 03610(132K))
Push the hooks from above and remove the fan cover.
FR-A820-00105(1.5K) to
00250(3.7K)
FR-A840-00083(2.2K),
00126(3.7K)
Fig. 7-2:
Disconnect the fan connectors.
Remove the fan.
FR-A820-00105(1.5K) to
00250(3.7K)
FR-A840-00083(2.2K),
00126(3.7K)
The number of cooling fans differs according to the inverter capacity.
Fig. 7-3:
FR-A800
FR-A820-00340(5.5K) to
01540(30K),
FR-A840-00170(5.5K) to
00770(30K)
Removal of the fan cover
Fan cover
Fan
FR-A820-00340(5.5K) to
01540(30K)
FR-A840-00170(5.5K) to
00770(30K)
Removal of the fan
FR-A820-01870(37K) or higher
FR-A840-00930(37K) to
03610(132K)
Fan cover
Fan connection
connector
FR-A820-01870(37K) or higher
FR-A840-00930(37K) to 03610(132K
Inspection item
I001306E
Fan cover
Fans
I002454E
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