Troubleshooting; Cleaning And Maintenance - Broan ULTRA Pro RB110L1 Installation Manual

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, timer, or speed control to operate
this ventilator. Use of speed control other than the Broan
78V and 78W may cause a motor humming noise.
To Operate Lights
The fan and light can be operated independently, using
separate switches. The light may be operated with a
dimmer switch. See wiring diagrams.

Cleaning and Maintenance

CAUTION
IN ORDER TO PREVENT MOTOR/CONTROL DAMAGE:
DO NOT remove motor plug to stop spinning motor.
Power must be disconnected (see WARNING above) before
motor plug is removed or inserted into control assembly.
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.
RB80L1

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..
RB110L1 Installation Guide
n