Maintenance
Replacement Procedures
8-43
(Revised 1/02)
Fan and Motor Installation (continued)
4
. Install seal housing (12),
n
ew
p
acking (11), washer (10) and retainer
a
ssembly (9).
5. Install fiber washers (8) and screws (7). Do not tighten screws at this
time.
6. Align motor shaft with center of seal housing (12), and install motor and
slinger assembly (6). Install and tighten motor and slinger assembly
mounting hardware. The motor shaft must not touch seal housing.
7. Tighten screws (7).
8. Apply a light coat of high temperature (1800°F) anti-seize lubricant to the
motor shaft.
9. Turn the motor shaft so that keyway is at the 6 o’clock position.
10. Take a flat blade screwdriver and place it between the fin blades of the
heat slinger and the motor plate, as shown in this illustration, to prevent
the motor shaft from turning.
11. Place fan on motor shaft and turn it to evenly spread the anti-seize
compound.
12. Remove fan. On electric units, check that the boiler cover is installed.
This is an installation aid to prevent unnecessary searching for the key
should it drop during installation.
13. Install key (5) into fan (4) keyway. Mate fan keyway with motor shaft
keyway and install fan on motor shaft. Push on fan until shaft bottoms out
in fan hub.
CAUTION
Do not tap or hit the motor shaft as this could damage the motor
bearings and make it necessary to replace the motor
.
14.
Turn fan slightly to make sure that the key is properly engaged in keyway.
If motor shaft turns with heat slinger being held in place, replace the
motor.
15. Install washer (3), lockwasher (2), and capscrew (1). T
ighten capscrew.
16. Connect motor wires to motor harness.
17. Install right side shroud. Spin fan by hand to make sure fan doesn’t rub
on shroud.
18. Install right side and center racks.
19.
Connect oven to the branch circuit.
20.
Operate oven in Oven mode and set to 400
°
F for 30 minutes. If motor
operates smoothly for 5 to 10 minutes, the motor is functioning properly.
It is not necessary for you to remain with the oven for the complete cycle;
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