Mitsubishi FREQROL-SFJ - 9.3 Inspection of discharge resistor unit

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