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Operator’s Manual 17
MAINTENANCE (CONTINUED):
(Fig. 3)
(Fig. 4)
(Fig. 5)
WARNING: NEVER SERVICE HEATER WHILE
IT IS PLUGGED IN, CONNECTED TO
PROPANE / L.P. 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
(Fig. 3).
3. Remove black and white motor wires from terminal board
(Fig. 3).
4. Carefully push motor wires through hole in bottom of
shell.
5. Remove screws holding motor mount to shell. Use nut-
driver (Fig. 4).
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
(Fig. 5). 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 (Fig. 3).
17. Attach black and white wires to terminal board (see
"Wiring Diagram" for correct locations).
18. Replace base tray.
Ground Screw
Terminal
Board
Motor
Green
Lead
Power
Cord
Green
Lead
Transformer
Green Lead
Hole in Shell
for Wires
Motor
Mount
Screw
Fan
Guard
Motor
Mount
Hole in
Shell for
Wires