John Deere AC-375LP User Manual
Page 17
Service
Operator’s Manual
17
MAINTENANCE (CONTINUED):
(Fig. 3)
(Fig. 4)
(Fig. 5)
WARNING: NEVER SERVICE HEATER WHILE
IT IS PLUGGED IN, CONNECTED TO
PROPANE SUPPLY, OPERATING OR
HOT. SEVERE BURNS AND ELECTRICAL
SHOCK CAN OCCUR.
CLEANING FAN:
Clean fan every 500 hours of operation or as needed.
1. Remove screws on side cover using 5/16" nut-driver.
2. Remove side cover.
3. Detach the five motor wires from parts under heater
shell. Be sure to detach only wires coming from motor.
(Fig. 3)
The five motor wires are:
• white wire—to terminal board
• black wire—to terminal board
• blue wire—to thermal switch wire
• orange wire—to solenoid valve
• green wire—to grounding screw on shell
4. Remove fan guard from rear of heater.
5. Reach into rear of heater shell. Carefully pull motor wires
through hole in bottom of shell. (Fig. 4)
Note: Pull wires through hole one at a time.
6. Remove nuts and mounting bolts holding motor mount
to shell. Use 3/8" nut-driver and 7/16" wrench.
7. 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.
8. Turn motor and fan around. Place motor and fan into
shell backwards.
Note: Motor will go into shell first (Fig. 5).
9. Line up rear mounting holes in shell with first hole on
each side of motor mount (Fig. 5).
Note: When holes are lined up, fan should be outside of
shell.
10. Holding mounting bolt, carefully reach through fan
blades into rear of heater. Be careful not to damage
fan pitch. Insert bolt through motor mount and shell.
With free hand, attach nut, finger tight. Repeat process
for other mounting hole.
11. Use 1/8" hex wrench to loosen setscrew which holds
fan to motor shaft (Fig. 6).
12. Slip fan off motor shaft.
13. Clean fan using soft cloth moistened with kerosene or
solvent.
Terminal
Board
Grounding Screw
Thermal
Switch Wire
Solenoid
Valve
Motor Wires
Mounting
Bolts
Motor
Mount
Rear
Mounting
Hole
First
Hole
Motor
Shaft
Fan
Setscrew
(Fig. 6)