Mitsubishi Electric FR-E540 Instruction Manual download pdf (Page 194)

PROTECTIVE FUNCTIONS

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5.3.7 Replacement of parts

The inverter consists of many electronic parts such as semiconductor devices.

The following parts may deteriorate with age because of their structures or physical characteristics, leading to

reduced performance or failure of the inverter. For preventive maintenance, the parts must be changed

periodically.

The part replacement guidelines for the inverter are indicated in the following table. Lamps and other short-

life parts must also be changed during periodic inspection.

Replacement Parts of the Inverter

Part Name Standard Replacement Interval Description

Cooling fan 2 to 3 years Change (as required)

Smoothing capacitor in main circuit 10 years Change (as required)

Smoothing capacitor on control board 10 years Change the board (as required)

Relays



Change as required

Note: For part replacement, contact the nearest Mitsubishi FA center.

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)

Cooling fan

The cooling fan cools heat-generating parts such as the main circuit semiconductor devices. The life of the

cooling fan bearing is usually 10,000 to 35,000 hours. Hence, the cooling fan must be changed every 2 to 3

years if the inverter is run continuously. When unusual noise and/or vibration is noticed during inspection, the

cooling fan must be changed immediately.

Removal

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

2) Disconnect the fan connector(s).

3) Remove the fan.

Reinstallation

1) After confirming the orientation of the fan, reinstall the fan so that the

arrow on the left of "AIR FLOW" faces up.

AIR FLOW

2) Reconnect the fan connectors.

When wiring, use care to avoid the cables being caught by the fan.

3) Reinstall the fan cover.

Fan cover

Fan

Fan connectors

<Example: FR-F540-5.5K>

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Mitsubishi Electric FR-E540 Instruction Manual Page 194