Product Manual

Page 10 of 12
2. For proper exhaust operation, a window, door, or louver should be opened for fresh air intake on
the opposite side of the area to be ventilated.
3. Turn the fan ON, the shutter will open automatically. When the unit is turned OFF, the shutter will
close.
4. Speed controllable units are designed to operate at a minimum of fifty percent line voltage.
Maintenance
⚠WARNING
 Disconnect power before servicing.
 Use OSHA approved lock-out tag-out devices on power supply to prevent shock and/or
electrocution.
Maintain the exhaust fan by adopting a program of conscientious repair and maintenance in
accordance with the following recommended procedures.
1. Disconnect power source before servicing.
2. Periodically clean the propeller, guard, motor, and shutter of any accumulated dirt.
Troubleshooting
Use the table below to troubleshoot problems before contacting service personnel or your local
dealer. If the problem continues after troubleshooting, call your local dealer for assistance.
Failure
Possible Cause
Corrective Action
Excessive noise
Dry motor bearings
Re-lubricate motor bearings as per
instructions or replace motor
Loose propeller
Tighten set screws on propeller hub
Bent or damaged propeller
Replace propeller
Loose guard assembly or motor
fasteners
Tighten as required to 15-20 inch lbs.
Fan inoperative
Blown fuse or open circuit breaker
Replace fuse or reset circuit breaker
Defective motor
Replace motor
Switch in Off position
Turn switch on
Insufficient air
flow
Blocked intake or exhaust opening
Clear intake and exhaust opening of
any obstructions.
Clean motor, guard, propeller and
shutter assembly.
Increase fresh air intake opening size
Low voltage
Determine cause and correct
Speed control set too low
Increase speed with controller
Replacement Parts
 For replacement parts and technical questions, please call Customer Service at 1-800-222-5381.
 Not all product components are available for replacement.
 When ordering parts, the following information will be required: item description, item model
number, item serial number/item lot date code, and the replacement part reference number.
 The distributor reserves the rights to make design changes and improvements to product lines
and manuals without notice.