Service Procedures - Desa SBLP155AT Owner's Manual

SERVICE PROCEDURES

6
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.
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 surface on motor shaft (see Figure 8).
7. Place setscrew on flat of shaft. Tighten setscrew firmly (40-50
inch-pounds).
8. Replace fan guard andupper shell.
IGNITOR
Make sure gap between ignitor electrode and burner nozzle is .13/.15".
Access ignitor electrode from inside combustion chamber. No other
maintenance is needed for ignitor.
Figure 5 - Upper Shell Removal
For more information, visit www.desatech.com
For more information, visit www.desatech.com
Figure 6 - Fan Removal
Fan
Figure 7 - Fan, Motor Shaft, and Setscrew Location
FAN
Hub
FAN CROSS SECTION
Figure 8 - Fan Cross Section
Fan
Setscrew
Motor shaft
LP-PFA/P 023
Fan
Motor
Shaft
Setscrew
LP-PFA/P 013
Motor
103014-01L