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Inspection Of Discharge Resistor Unit - Mitsubishi FREQROL-SFJ Maintenance Manual

Ac spindle drive
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9.3 Inspection of discharge resistor unit

Cooling fan
Freauencv
1. Check if fan shaft
Weekly
Monthly
can be rotated
smoothly by hand.
2. Check if fan motor
runs powerfully.
3. Check if foreign
sound arises in
bearing.
Check
Remedv
Replace the
fan.
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