13
BLOWER OPERATION
After electrical connections are completed, start motor briefly to determine the direction of wheel
rotation. If necessary to reverse the rotation, follow instructions given on the motor nameplate or
terminal box cover.
With air system in full operation, and with all ducts attached and inspection door(s) closed, measure
the current input to the motor and compare with nameplate rating to determine if the motor is
operating under safe load conditions.
Blower Maintenance
1.
After electrical connections are completed, start motor briefly to determine the direction of
wheel rotation. If necessary to reverse. The rotation, follow instructions given on the motor
nameplate or terminal box cover.
2. Follow motor manufacturer’s instructions for motor lubrication. Remove excess lubricant.
3. Follow Replacement Parts Manual for blower bearing lubrication.
4. Check wiring to make sure it is secure and well insulated
BLOWER TROUBLESHOOTING CHART
Symptom
Possible Cause(s)
Corrective Action
Excessive noise and/or
vibration
1. Foreign object
1. Remove
2. Wheel rubbing on housing
2. Center the wheel
3. Loose wheel or sheave on
shaft
3. Tighten all set screws
4. Motor or blower not secure
4. Tighten Mounting
5. Belt(s) too loose/too tight
5. Adjust Tension
6. Worn belt(s)
6. Replace
7. Mismatched belt(s)
7. Replace
8. Loose or worn bearings
8. Replace
9. Bearing or drive alignment
9. Realign
10. Accumulation of material on
wheel
10. Clean
11. Motor out of balance
11. Replace
12. Wheel out of balance
12. Replace or Re-balance
13. Sheaves eccentric or out of
balance
13. Replace
