Mitsubishi FREQROL-SFJ - 9.2 Inspection of motor

9.2
Inspection of motor
Frequency
Check
Remedy
1. Sound (noise)
Monthly o Check if foreign
and vibratioon
sound or intense' vib-
ration occurs.
If foreign sound or in-
tense vibration occurs,
perform the following
check:
1. Check foundation and
installation.
2. Check shaft alignment.
3. Check if vibration is
transmitted through
shaft coupling.
4. Check if bearing is
damaged.
5. Check if noise or vib-
ration is caused by
reduction gear or
belt.
6. Check control equip-
ment for condition.
7. Check cooling' fan for
condition.
8. Check belt tension.
2. Temperature
Monthly o Check bearing tempera-
Clean.
rise
ture.
(Amb. temp.
+ lot0 4oocj
o Check motor frame temp-
erature.
If temperature is high ex-
cessively,
perform the
following check:
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