PORT-A-COOL® Hazardous Location Units
*
FAN SYSTEM
BELT DRIVE MODELS
CAUTION
Please use caution when troubleshooting or repairing all electrical compo-
nents. Be certain that all power is disconnected from the PORT-A-COOL® unit
before the cooling pads are removed to gain access to the fan.
PROBLEM CHECK SOLUTION
Fan motor won’t run and Power cord, Reconnect power,
makes no sound. switches, circuit creaker, etc. reset breaker.
Fan motor won’t run and
Blade in contact with shroud Check mounting bolts.
makes a humming sound.
Motor stalled Replace motor.
(will not turn by hand)
Breaker trips or fuse blows Motor stall (as above). Replace motor.
when fan is started.
Other items on circuit. Remove other items.
Motor overheating and
shutting off and restarting Inlet air obstructed or Provide minimum
several minutes later. too close to wall. 36 inch inlet clearance.
Faulty motor. Replace motor.
Fan motor won’t run and switch Switch making good contact. Replace switch.
makes soft clicking sound.
Fan motor won’t run and has
Start capacitor leaking from cover. Replace capacitor.
a burning smell and hums.
Motor stall (as above). Replace motor.
Fan blade doesn’t turn and
Fan Belt, loose or broken. Tighten or replace fan belt.
unit makes squealing sound.
Fan pulley spinning on shaft. Tighten pulley set screw.
Fan belts do not last very long. Motor and fan pulleys Realign motor and mount.
misaligned
Fan will not reach speed but Capacitor (where visible) and Replace capacitor or motor.
turns and makes humming sound. motor electrical connections.
