Dryer Booster Installation and Operation Manual

5
Wiring Procedure DBF110
Step 1.
Remove the screws securing the terminal box cover plate located on the
side of the fan. All fan motor and pressure switch connections are
prewired to an electrical terminal strip. A
3
/
8
" romex type cable
restraint connector will be needed to secure the wiring through the
knockout provided on the side of the terminal box.
Step 2.
Bring incoming electrical service through the romex connector and the
fan knockout. Be sure to place the connector nut over the wiring coming
into the terminal box. There are three open ports on the terminal strip.
Using a small regular screwdriver, match the neutral wire of the incoming
supply to the white wire, the load wire of the incoming supply to the
black wire, and the ground wire of the incoming supply to the green wire
(see ill. 5). For reference, a wiring diagram is included on the inside of
the terminal box lid.
Step 3.
Secure the romex connector. Secure the incoming supply with the romex
connector. Replace the fan terminal box cover.
Wiring Procedure DBF4XL
The DBF4XL is pre-wired from factory.
Green
Black
White
Red
Blue
Brown
Power
to Fan
Black
Terminal block in
fan wiring box
Neutral
115V Line (Supply)
Ground
Capacitor
Illustration 5
DBF110 Wiring – Fan and Pressure Switch
Illustration 6
DBF110 only
Electrical Supply from
Breaker Panel
Switch Circuit
Recommended Maintenance
1. Since fan bearings are sealed and provided with an internal lubricating material, no additional lubrication is necessary.
2. Fan impeller may accumulate lint. Periodic inspection, based upon dryer usage, should be performed to ensure that the fan impeller is not
obstructed or loaded with lint. Under normal conditions, fan should be inspected a minimum of every Six (6) Months. Note: Excessive dryer exhaust
fan noise or vibration may be an indication of lint buildup on the impeller. To inspect and clean the impeller:
a. Disconnect the incoming power supply at the source.
b. Remove the duct from the fan inlet and remove any lint buildup on the impeller.
c. Reconnect the duct to the fan. Turn power supply on.