Troubleshooting
Motor Overamps
Air volume too high?
No
Actual static pressure
lower than design?
No
Blower rotation correct?
Yes
Motor voltage correct?
Yes
Motor horsepower too low?
No
Shorted windings in motor?
Yes
Everything is working
properly, consult factory.
Yes
Yes
No
No
Yes
Yes
Adjust drives or increase external static pressure as needed.
(Reference Blower Start-Up – Step #5)
Adjust drives to reduce blower RPM.
Reverse blower rotation.
(Reference Blower Start-Up – Step #2)
Provide proper power supply.
(Reference Blower Start-Up – Step #1)
Resize motor.
Replace motor.
18 DGX Industrial Space Heating
®
