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111710-01B
8
SERVICE PROCEDURES
WARNING: Never service
heater while it is plugged in,
connected to propane supply,
operating or hot. Severe burns
and electrical shock can occur.
MOTOR
1. With heater on its side, remove base tray.
2. Access ground screw through underside of
heater base. Remove ground screw. Disconnect
the green motor wire and the green power cord
wire from underside of shell (see Figure 5).
3. Remove black and white motor wires from
terminal board (see Figure 5).
4. Carefully push motor wires through hole in
bottom of shell.
5. Remove screws holding motor mount to shell.
Use nut-driver (see Figure 6).
6. Carefully pull motor and fan out of shell.
IMPORTANT: Be careful not to damage fan.
Do not set motor and fan down with the weight
resting on fan. This could damage fan pitch.
7. Use hex wrench to loosen setscrew which
holds fan to motor shaft.
8. Remove fan. Be careful not to damage the fan
blade pitch.
9. Use nut driver to remove two nuts that attach
motor to motor mount.
10. Discard old motor.
11. Attach motor to motor mount with two nuts.
Tighten nuts firmly.
12. Replace fan on motor shaft. Make sure set
screw contacts flat surface on motor shaft.
13. Tighten set screw firmly (40-50 inch-pounds
[46.08-57.60 kilogram-centimeters]).
14. Carefully route motor wires through hole in
shell (see Figure 7). Place motor, motor mount
and fan guard into rear of heater shell.
15. Insert screws through heater shell and into
motor mount. Tighten screws firmly.
16. Turn heater on its side to access opening in
bottom of base. Connect green wires from
motor, transformer and power cord to heater
shell using ground nut (see Figure 5).
17. Attach black and white wires to terminal board
(see Wiring Diagram, page 11, for correct
locations) .
18. Replace base tray.
Ground Screw
Terminal
Board
Motor
Green
Lead
Power
Cord
Green
Lead
Transformer
Green Lead
Figure 6 - Removing Motor, Motor Mount
and Fan Guard from Heater
Figure 5 - Location of Ground Screw
Hole in Shell
for Wires
Motor
Mount
Screw
Fan
Guard
Motor
Mount
Figure 7 - Replacing Motor, Motor Mount
and Fan Guard into Heater
Hole in
Shell for
Wires