RB80C
RB110C Installation Guide
Page 12
WARNING
Before servicing or cleaning unit,
switch power off at service panel and lock the service
disconnecting means to prevent power from being
switched on accidentally. When the service disconnecting
means cannot be locked, securely fasten a prominent
warning device, such as a tag, to the service panel.
Operation
To Operate Fan
Use an on/off switch to operate this ventilator. Use of speed
controls may cause a motor humming noise.
Cleaning and Maintenance
To Clean
For quiet and efficient operation, long life and attractive
appearance, remove Grille and vacuum interior of unit
with a dusting brush attachment.
The Motor is permanently lubricated and never needs
oiling. If the motor bearings are making excessive or
unusual noises, replace the Motor.
Troubleshooting
Symptom: The fan does not run.
• Check for an open fuse or circuit breaker in the
building’s service panel.
• Check that the plug-in connection for the Motor is
seated firmly in place.
• Check that the Blower Wheel spins freely.
Symptom: The fan runs erratically.
• Check that the Blower Wheel is firmly attached to the
Motor shaft and both spin freely.
Symptom: The fan seems noisy.
• Check that the back draft damper in the fan’s Transition
pivots freely.
• Check that the back draft damper in the wall or roof cap
pivots freely. These dampers are sometimes mistakenly
painted shut or obstructed by bird and insect debris.
