WNM YE3-132S2-2H, Operation Manual

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9
Frame size Pole Drive end Non-drive end
250
2P 6313 6313
4
～
8P 6314 6313
280
2P 6314 6314
4
～
8P 6317 6314
315
2P 6317 6317
4P 6319 6319
6
～
10P NU319 6319
355
2P 6319 6319
4P 6322 6322
6
～
10P NU322 6322
Note
：
When changing bearing, take the nameplate of the actually assembled bearing as standard.
3.3 No inner and outer bearing cover for H80-132 frame size motor. Disassemble the motor as the
following order: firstly remove fan cover, and V-seal ring on the drive end, secondly remove the bolts
on front end cover and rear end cover, and lastly take out the rotor together with the front end cover
and cooling fan.
3.4 Motor must be dried before use if the motor has been affected with damp by means of drying
in the oven or short-circuit current. The temperature should be increased gradually but not exceed
145
℃
if dried in the oven. And when the motor dried by short-circuit method, it should be connected
as short circuit whose input current is 0.6-0.8 times rated current. However the short-circuit method is
not suitable if the motor is heavily damped, since it may cause the electrolysis.
3.5 If the winding needs to be replaced, the original winding’s type, dimensions, diameter and
turns of coil should be recorded. Arbitrarily changing of winding will decrease the performance of the
motor, and even to damage the motor.
3.6 Any maintenance or replacement of its components must be done by professional people.
3.7 The motor need to be periodically inspected according to its actual operation, overhaul at least
once a year.
3.8 Grease may harden in long-time idling. When abnormal sounds occur at the beginning of
operation, the motor need to be operated without load for half an hour so as to soften grease and
restore its function.
4. Failures & causes
Check motors frequently in order to remove the possible failure in advance. The common failures
are as follows:
4.1 Mechanical fault:
• Bearing overheating: lack of grease, dirty grease, low quality grease, water intrusion, oil ring