
5.NOTES ON OPERATION SPECIFICATIONS FOR THE αi SERIES B-65272EN/04
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5 NOTES ON OPERATION
WARNING
1 When supplying voltage to the spindle motor or the fan motor,
ensure that the earth cable is connected to the earth terminal and
secure that the spindle motor is put to earth certainly.
CAUTION
1 After a continuous and long operation, the temperature of model
α0.5i may rise higher than other motors because they have no
fan motor. So please treat them carefully.
2 Sound and vibration
Check that there is no abnormal sound or vibration.
3 Cooling
Clean off dust from the cooling air inlet and outlet of the stator
every year, and check the flow of air carefully.
NOTE
1 To increase the operating lifetime of a motor of these series,
break in the motor. As a guideline, increase the speed of the
motor from 1000 min
-1
to its maximum speed in 1000 min
-1
increments, and operate the motor at each speed for about 5
minutes.