
7
6.1 Troubleshooting (continued)
Fan System
Please use caution when troubleshooting or repairing all electrical components. Be certain that
all power is disconnected from the
COOL-
SPACE
®
unit before the cooling pads or fan guard
are removed to gain access to the fan.
Direct & Belt Drive Models
Problem
Check
Solution
Fan won't run and makes no
sound.
Power cord, extension cord,
switches, circuit breaker, GFI
ground fault.
Reconnect power or extension
cord. Reset breaker.
Fan motor won
’
t run and makes
a humming sound.
Blade in contact with shroud.
Motor stalled (will not turn by
hand).
Re-center blade hub.
Replace motor.
Breaker trips or fuse blows when
fan is started.
Motor stall.
Check power source for min.
220v/10 amp. Extension cord.
Replace motor.
Upgrade power supply.
Replace with heavier cord.
Motor overheating and shutting
off. Restarting several minutes
later.
Extension cord gauge too small
Inlet air obstructed or too
close to wall
Faulty motor
Loose belt
Replace with heavier cord
Provide minimum 1 metre
inlet clearance.
Replace motor.
Tighten belt
Fan motor won
’
t run and switch
makes soft clicking sound.
Switch making good contact.
Replace switch.
Fan blade doe
sn’t turn
and unit
makes squealing sound.
Motor stall (as above). Fan
belt loose or broken.
Fan pulley spinning on shaft.
Replace motor.
Tighten or replace fan belt.
Tighten pulley set screw.
Fan belts do not last very long.
Motor and fan pulleys alignment.
Realign motor and fan pulleys.
Fan will not reach speed but
turns and makes humming
sound.
Capacitor (where visible) and
motor electrical connections.
Extension cord to small.
Replace capacitor or motor.
Increase cord gauge.