Running speed is not stable
Possible causes:
1. AC power voltage is
too low.
2. Tension of drive belt
or running belt is too
loose.
3. Poor adjustment of
MCB.
4. MCB is damaged.
5. Motor is damaged.
Fix:
1. Check the power voltage by using voltage-meter to
see if it is within 120V+-15% or 230V+-15%.
u If the power voltage isn't within the range, look
for a qualified electrician for help.
2. Open the motor cover, if the belt has stretched and is
slipping across the rollers when running.
u Adjust the belt tension.
3. Remove the motor cover and run the machine at low
speed, the adjust the IR COMP of MCB.
u If it hasn't been improved, replace new MCB.
4. Replace new motor.
6-2 Revision: 1.0 Date: 2001-06-01
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