Qmark High Velocity Hot Water/Steam Heated Air Curtains - Manual (Page 6)

6
Troubleshooting Chart
SYMPTOM POSSIBLE CAUSE(S) CORRECTIVE ACTION
Fan inoperative 1. Blown fuse or open circuit breaker.
2. Electricity turned off.
3. Loose cord connection.
4. Defective motor.
1. Replace fuse or reset circuit breaker.
2. Contact local power company.
3. Re-check all connections.
4. Replace.
1. Center wheel.
2. Tighten mounting bolts.
3. Replace motor.
1. Wheel rubbing on housing.
2. Motor base or blower not securely
anchored.
3. Defective motor bearings.
Excessive noise
1. Reconnect to proper voltage.
2. Open.
3. Remove any obstruction.
4. Clean.
5. Interchange any two supply wires to unit
1. Improper voltage.
2. Outlet louvers closed.
3. Intakes obstructed.
4. Dirty blower wheels
5. Motors rotate in the wrong direction
Insufficient air flow
1. Verify correct wire size.
2. Remove obstruction.
1. Low voltage.
2. Obstruction to blower wheel.
Fans cut out on
thermal overload
(self-resets)