8
SERVICE PROCEDURES
SERVICE PROCEDURES
Continued
FAN
1Remove motor, motor mount, and fan (see Motor, steps 1 through 8, page 7).
2.Clean fan using soft cloth moistened with kerosene or solvent.
3.Dry fan thoroughly.
4.Replace fan on motor shaft. Make sure setscrew is touching back of flat surface on motor shaft (see Figure 8).
5.Place setscrew on flat of shaft. Tighten setscrew firmly
6.Place motor, motor mount, and fan guard into rear of heater shell (see Motor, steps 14 through 18, page 7).
Fan
Setscrew
Motor Shaft
Figure 8 - Fan, Motor Shaft, and Setscrew Location
Fan
Hub
Motor
Shaft
Setscrew
Figure 9 - Fan Cross Section
SPARK TRANSFORMER
1.Remove base tray.
2.Locate and disconnect white, black, and orange wires from spark transformer.
3.Remove two screws holding spark transformer to base. Re- move sheet metal nuts on transformer and install on new trans- former. Discard spark transformer.
4.Install new spark transformer. Position new spark transformer in same manner as old transformer.
5.Connect white, black, and orange wires to new spark trans- former. Connect wires to correct terminals as noted in step 2.
6.Replace base tray.
Ignitor Wire
Bushing
Figure 10 - Removing Ignitor Wire from Spark Transformer
IGNITOR
1.Remove motor, motor mount, and fan guard (see Motor, page 7, steps 1 through 6) .
2.Remove orange ignitor wire from ignitor.
3.Remove ignitor mounting screw from rear head using
4.Remove ignitor from rear head.
5.Install new ignitor. Attach ignitor to rear head with ignitor mounting screw.
6. Attach ignitor wire.
Ignitor
Ignitor
Mounting
Screw
Rear Head
Figure 11 - Removing Ignitor Mounting Screw and Ignitor
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