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Mitsubishi Manuals
Controller
FREQROL-SFJ
Maintenance manual
Inspection Of Discharge Resistor Unit - Mitsubishi FREQROL-SFJ Maintenance Manual
Ac spindle drive
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Contents
Table of Contents
Troubleshooting
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Table of Contents
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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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Table of Contents
Troubleshooting
General
4
Troubleshooting
86
First step of troubleshooting
87
Second step of troubleshooting
89
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