Desa RCLP155B owner manual Service Procedures, Upper Shell Removal, Ignitor

CANADIAN RCLP155B

PROPANE CONSTRUCTION HEATER

SERVICE

PROCEDURES

WARNING: Never service heater while it is plugged in, con- nected to propane supply, oper- ating, or hot. Severe burns and electrical shock can occur.

UPPER SHELL REMOVAL

1.Remove screws along each side of heater using 5/16" nut-driver. These screws attach upper and lower shells together.

2.Lift or slide upper shell off.

3.Remove fan guard.

FAN

IMPORTANT: Remove fan from motor shaft before removing motor from heater. The weight of the motor resting on the fan could damage the fan pitch.

1.Remove upper shell (see above).

2.Use 1/8" hex wrench to loosen setscrew which holds fan to motor shaft.

3.Slip fan off motor shaft.

4.Clean fan using soft cloth moistened with kerosene or solvent.

5.Dry fan thoroughly.

6.Replace fan on motor shaft. Make sure setscrew is touching back of flat sur- face on motor shaft (see Figure 8).

7.Place setscrew on flat of shaft. Tighten setscrew firmly 4.5 to 5.6 N-lb (40-50 in-lb).

8.Replace fan guard andupper shell.

IGNITOR

1.Make sure gap between ignitor electrode and burner nozzle is 3.3/3.8 mm (.13/

.15 in). Access ignitor electrode from in- side combustion chamber. No other maintenance is needed for ignitor.

Figure 5 - Upper Shell Removal

Fan

Figure 6 - Fan Removal

Fan

Setscrew

Motor shaft

Figure 7 - Fan, Motor Shaft, and Setscrew Location

Motor

Fan

Hub

Motor

Shaft

Setscrew

Figure 8 - Fan Cross Section

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