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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.
To Operate Lights
The light and night light can be operated independently,
using separate on/off switches.
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 Control Assembly and Motor.
To Change Bulbs
Refer to Retrofit Installation Step 14 (page 11).
1. Carefully insert a small
flathead screwdriver
between the Grille and Lens,
then twist to remove Lens.
2. Purchase two (2) 18W (max.)
type GU24 fluorescent
lamps with Maximum Overall
Length (MOL) of 3.9" (100
mm). Purchase a 4W (max.)
C7-type incandescent night
light bulb.
3. Insert bulbs into their sockets. Replace Lens.
M.O.L.
3.9" (100 mm)
XB50L
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Troubleshooting
Symptom: The fan does not run.
• Check for an open fuse or circuit breaker in the
building's service panel.
• Check that the two (2) plug-in connections for the Motor
and the Control are 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 Duct
Connector pivots freely. Screws used to attach the duct
to the Duct Connector may be preventing the damper
from opening.
• 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..
XB80L
XB110L Installation Guide
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