Specifications
5
110524
Problem Possible Cause Remedy
Failure to start or no air
delivery
Inadequate air delivery
with cooler running
Inadequate cooling
Motor cycles on and off
Noisy
Excessive humidity in
house
Musty or unpleasant
odor
Water draining onto roof
1. No electrical power to unit
• Fuse blown
• Circuit breaker tripped
• Electric cord unplugged or damaged
2. Belt too loose or tight
3. Motor overheated
• Belt too tight
• Blower bearings dry
• Motor pulley diameter too large
4. Motor locked
1. Insufficient air exhaust
2. Belt too loose
3. Pads plugged
4. Motor underloaded
1. Inadequate exhaust in house
2. Pads not wet
• Pads plugged
• Open spots in pads
• Trough holes clogged
• Pump not working properly
1. Low voltage
2. Excessive belt tension
3. Blower shaft tight or locked
4. Bearings dry
5. Motor pulley diameter too large causing mo-
tor overload
1. Bearings dry
2. Wheel rubbing blower housing
3. Loose parts
1. Inadequate exhaust
1. Stale or stagnate water in cooler
2. Pads mildewed or clogged
3. Pads not wetting properly
• Trough holes clogged
• Pump not working properly
1. Float arm not adjusted properly
2. Overflow assembly leaking
1. Check power
• Replace fuse
• Reset breaker
• Plug in cords or replace if damaged
2. Adjust belt tension
3. Determine cause of overheating
• Adjust belt tension
• Oil blower bearings
• Adjust pulley to correct diameter
4. Replace motor
1. Open windows or doors to increase air flow
2. Adjust belt tension or replace if needed
3. Replace pads
4. Adjust pulley to full load ampere rating of motor
1. Open windows or doors to increase air flow
2. Check water distribution system
• Replace pads
• Repack pads
• Clean trough and unplug holes
• Replace or clean pump (Unplug unit)
1. Check voltage
2. Adjust belt tension
3. Oil or replace bearings (Unplug unit)
4. Oil bearings
5. Adjust pulley so full load ampere rating of motor is
not exceeded
1. Oil bearings
2. Inspect and realign (Unplug unit)
3. Tighten loose parts
1. Open doors or windows
1. Drain pan and clean pads
2. Replace pads
3. Check water distribution system
• Clean
• Replace or clean pump (Unplug unit)
1. Adjust float
2. Tighten nut and overflow pipe.
Troubleshooting