Mitsubishi FR-A800

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Inspection item

PRECAUTIONS FOR MAINTENANCE AND INSPECTION

679

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))

1) Push the hooks from above and remove the fan cover.

2) Disconnect the fan connectors.

3) Remove the fan.

 The number of cooling fans differs according to the inverter capacity.

FR-A820-00105(1.5K) to

00250(3.7K)

FR-A840-00083(2.2K),

00126(3.7K)

FR-A820-00340(5.5K) to

01540(30K),

FR-A840-00170(5.5K) to

00770(30K)

FR-A820-01870(37K) or

higher

FR-A840-00930(37K) to

03610(132K)

Fan cover

Fan

Fan connection

connector