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F.
REPAIR & REPLACEMENT
WARNING
WARNING.
Fan should only be serviced by qualified
personnel with HVAC equipment experience. Disconnect
fan from power supply before servicing fan. Lock the
switch in the
“OFF”
(open) position and/or tag the switch
to prevent unexpected power applications.
1.
After repairing any component:
1.1 Check that electrical connections are correct and
secure.
1.2
Remove any foreign material from enclosures.
1.3
Install and secure all covers.
1.4 Ensure that all fasteners are tight.
1.5
Remove all foreign objects from fan.
1.6
Ensure air exits through dampers and fan rotates
counterclockwise when viewed from rear of fan (see
Figure 2, page 8).
F.1 Motor, Fan, and Fan Guard
1.
Remove the (8) screws and washers that are holding the
fan grills to the shroud (see Figure 3, page 8).
2.
Remove the (4) bolts and nuts that are holding the motor
to the motor mount (see Figure 4, page 9).
3.
Remove the motor, fan and grills from the frame by lifting
the motor (see Figure 5, page 9).
4.
Before removing the fan, measure and record the
location of the fan hub on the motor shaft (see Figure 6,
page 9). If fan is difficult to remove, use a gear puller
on the fan hub.
5.
To reassemble, place grills with grill clips onto motor (see
Figure 6, page 9) then position fan on motor shaft and
tighten set screws.
6.
Place motor assembly onto motor mount and fasten the
fan guard to cabinet.
7.
Center fan in shroud opening. Leave approximately 1/16"
to 3/16" (1.6 mm to 4.8 mm) gap between the motor and
fan guard. (see Figure 7, page 9).
8.
Bolt motor to motor mount. Manually spin the fan blade to
ensure it rotates freely before applying power.
9.
Air must exit through dampers and fan must rotate counter
clockwise when viewing from the rear of the fan (see
Figure 3, page 8).
Fan rotation
Mounting Holes
(on top and bottom)
Air Intake
Support back of motor
Figure 2
Grill Screws (4 on top)
Grill Screws (4 on bottom)
Figure 3
