Conduit #1
Front View
Remove
Install
Air inlet
Conduit #2
From grove to face of
coupling: 7/8" (22 mm)
Fan rotation
Remove
Install
Side View
Figure 14
Figure 15
Figure 16
4.
Motor, Fan, & Fan Guard
4.1
Remove bolts holding the motor to the motor mount.
On units with a built-in thermostat, remove the bolts
on the back of the thermostat enclosure.
4.2
Remove conduit #1 located between motor junction
box and control enclosure by turning it in the
direction illustrated (see Figure 14, page 19). Note
that conduits #1 and #2 are not interchangeable and
have left hand threads on one end, this end is indicated
by a machined groove.
4.3
Remove the two-piece fan guard assembly (see
Figure 15, page 19).
4.4
Lift the motor assembly off the motor mount.
4.5
Before removing the fan, measure and record the
location of the fan hub on the motor shaft (see
Figure 16, page 19). If difficult to remove, use a
gear puller on the fan hub.
4.6
To reassemble, place motor assembly onto motor
mount and fasten the fan guard to cabinet.
4.7
Simultaneously engage and tighten both ends of
conduit #1 into enclosures. Leave a 1/16" to 3/16"
(1.6 to 4.8 mm) gap between the motor and fan
guard (see Figure 17, page 20). Adjust conduit #2
to center the fan in the shroud.
4.8
To ensure a minimum 5 thread engagement,
threaded ends of conduits must protrude a minimum
of 1/16" (1.6 mm) into enclosures. The groove on
conduit #2 must not be more than 7/8" (22 mm) from
motor coupling (see Figure 14, page 19).
4.9
Bolt motor to motor mount. Manually spin the fan
blade to ensure fan rotates freely.
4.10 Air must exit through louvers and fan must rotate
counterclockwise when viewed from rear of heater
(see Figure 14, page 19).
5.
Heating Elements
5.1 Heating elements are an integral part of the vacuum
charged core. A factory exchange core can be shipped
immediately from stock. Refer to
2. Core, page 18
for details.
6.
Contactor
6.1
Loosen, but do not remove contactor mounting
screws. Slide contactor off mounting screws.
6.2 Replace with a factory supplied contactor of the same
rating.
7.
Transformer
7.1 Replace with a factory supplied transformer of the
same rating.
7.2
On the new transformer, select primary wires to
match heater voltage.
7.3
Ensure that the correct transformer secondary lead
is grounded (see Figure 9, page 10). Individually
terminate all unused wires using closed end
connectors.
19
19
R
ep
air
a
nd
R
ep
la
cem
en
t
Summary of Contents for FX5 Series
Page 21: ...NOTES ...
Page 43: ...NOTES REMARQUES ...
