Troubleshooting - Greenheck ARC Installation, Operation And Maintenance Manual

Troubleshooting

WARNING
Before taking any corrective action, make certain
unit is not hot to the touch and capable of operation
during repairs.
PROBLEM CAUSE
Too much airflow Resistance lower than designed Decrease fan speed.
System resistance too high
Reduced airflow
Fan speed too low
Excessive dirt buildup on
propeller
Excessive vibration
Excessive noise
Defective motor
Debris
Loose or damaged propeller
Electrical supply
Fan does not
operate
Motor
NOTE: Thermal protection triggers when the NTC temperature reach 100° C and the motor will shut down. The
motor will restart when NTC temperature drop back to 80°C.
®
AVERTISSEMENT
Avant d'entreprendre toute action corrective, s'assurer
que l'appareil n'est pas chaud au toucher et qu'il ne
pourra pas fonctionner durant les réparations.
CORRECTIVE ACTION
Remove obstructions in the system. Clean coils and dirty
filters. Check for adequate supply air for exhaust fans or
exhaust air for supply fans.
Increase fan speed.
Clean propeller.
Clean dirt buildup from propeller. Check all setscrews and
fasteners for tightness. Correct propeller imbalance. Check
for loose dampers, guards or ductwork.
Replace motor.
Remove all debris from the fan.
Tighten or replace
Check fuses/circuit breakers. Check for switches turned off
or disconnected. Check for correct supply voltage and all
electrical connections.
Assure motor is correct horsepower and not tripping overload
protector. Verify motor rotor is free for rotation. Make sure
current is under FLA if able to operate during a certain
period of time. See the specific motor cut sheet for more
information.
Axial Condenser Fans 5