Mitsubishi Electric FR-F820-00046 Instruction Manual page 602

 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-F820-00105(2.2K) to 04750(110K), FR-F840-00083(3.7K) to 03610(160K))
1.
Push the hooks from above and remove the fan cover.
FR-F820-00105(2.2K) to 00250(5.5K)
FR-F840-00083(3.7K), 00126(5.5K)
2.
Disconnect the fan connectors.
3.
Remove the fan.
Fan cover
Fan
FR-F820-00105(2.2K) to 00250(5.5K)
FR-F840-00083(3.7K), 00126(5.5K)
*1 The number of cooling fans differs according to the inverter capacity.
FR-F820-00340(7.5K) to 01540(37K)
FR-F840-00170(7.5K) to 00770(37K)
Fan cover
Fan connection
connector *1
FR-F820-00340(7.5K) to 01540(37K)
FR-F840-00170(7.5K) to 00770(37K)
7. PRECAUTIONS FOR MAINTENANCE AND INSPECTION
FR-F820-01870(45K) or higher
FR-F840-00930(45K) to 03610(160K)
Fan cover
Fan connection
connector
FR-F820-01870(45K) or higher
FR-F840-00930(45K) to 03610(160K)
7.1 Inspection item
1
2
3
4
5
6
7
8
9
10
601