Replacement Of Parts - Mitsubishi Electric FR-HC2-7.5K Instruction Manual

5.1.6

Replacement of parts

The converter 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 fault of the converter. For preventive maintenance, the parts must be replaced periodically.
Estimated lifespan interval of the converter parts is shown in the below table.
Part Name
Cooling fan
Main circuit smoothing capacitor
On-board smoothing capacitor
Relays
Fuse inside the converter (160K or higher)

Estimated lifespan for when the yearly average surrounding air temperature is 40C
(without corrosive gas, flammable gas, oil mist, dust and dirt etc.)

Input current: 80% of the converter rated current
REMARKS
For parts replacement, contact the nearest Mitsubishi FA center.
(1) 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.
NOTE
For parts replacement, contact the nearest Mitsubishi FA center.
Removal (FR-HC2-7.5K to 75K, FR-HC2-H7.5K to H110K)
1) Push the hooks from above and remove the fan cover.
FR-HC2-7.5K, 15K
FR-HC2-H7.5K, H15K
2) Disconnect the fan connectors.
3) Remove the fan.
FR-HC2-7.5K, 15K
FR-HC2-H7.5K, H15K
(Example for FR-HC2-7.5K)
Estimated lifespan
10 years
10 years
10 years

10 years
Fan cover
Fan
Fan connection
connector
FR-HC2-30K or higher
FR-HC2-H30K to H110K
(Example for FR-HC2-55K)


Replace the board (as required)

FR-HC2-30K or higher
FR-HC2-H30K to H110K
Fan cover
Fan∗
Fan connection
connector
∗ The number of cooling fans differs
according to the converter capacity.
Inspection items
Description
Replace (as required)
Replace (as required)
As required
Replace (as required)
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