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105339-01C8
SERVICE PROCEDURES
Continued
FAN
1. Remove three screws that attach fan guard to
heater shell.
2. Remove motor and fan guard from heater shell
(see Figure 10, page 7).
3. Use hex wrench to loosen set screw that holds
fan to motor shaft (see Figure 11, page 7).
4. Remove fan. Be careful not to damage the fan
blade pitch.
5a. If replacing fan, remove old fan and discard.
Go to step 7 below.
5b. If cleaning fan, use soft cloth moistened with
kerosene or solvent.
6. Dry fan thoroughly.
7. Place fan onto motor shaft of new motor.
Make sure set screw contacts flat surface on
motor shaft. Tighten set screw firmly (40-50
inch-pounds).
8. Place motor and fan guard into rear of heater
shell. Make sure power cord is properly lo
-
cated (see Figure 13, page 7).
9. Insert three screws through heater shell and
into fan guard. Tighten screws firmly.
IGNITOR
1. Remove motor and fan guard from heater (see
Motor, page 7, steps 1 through 5).
2. Remove black ignitor wire from piezo ignitor.
Access ignitor wire through underside of
heater base (see Figure 14). Push wire up
through bushing in heater shell.
3. Remove ignitor mounting screw from rear
head using nut-driver or standard screwdriver
(see Figure 15).
4. Remove ignitor from rear head.
5. Install new ignitor. Attach ignitor to rear head
with ignitor mounting screw.
6. Run ignitor wire from new ignitor through
bushing in heater shell. Attach ignitor wire to
piezo ignitor.
7. Set gap between ignitor electrode and target plate
to 0.17" (4.3 mm) (see Figure 16).
WARNING: Make sure heater
is disconnected from propane
supply. Heater could ignite caus
-
ing severe burns.
8. Test for spark. Push piezo ignitor button and
watch for spark between ignitor electrode and
target plate.
9. Place motor and fan guard into rear of heater
shell (see Motor, page 7, steps 9 and 10).
Target Plate
Gap
Area
Figure 16 - Clearance between Ignitor
Electrode and Target Plate
Ignitor
Electrode
Rear
Head
Figure 15 - Removing Ignitor Mounting
Screw and Ignitor
Ignitor
Ignitor
Mounting
Screw
Figure 14 - Removing Ignitor Wire from
Piezo Ignitor
Bushing
Piezo
Ignitor
Underside of
Heater Base
Ignitor Wire