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SERVICE PROCEDURES
Continued
NOZZLE ASSEMBLY
1.
Remove upper shell (see Upper Shell Removal, page 8).
2.
Remove fan (see Fan, page 8).
3.
Remove fuel and air line hoses from nozzle assembly (see Fig-
ure 19, 20, or 21, page 10).
4.
Turn nozzle assembly 1/4 turn to left and pull toward motor to
remove (see Figure 22).
5.
Place plastic hex-body into vise and lightly tighten.
6.
Carefully remove nozzle from the nozzle adapter using 5/8"
socket wrench. See Figure 23.
7.
Blow compressed air through face of nozzle. This will free
any dirt in nozzle area.
8.
Inspect nozzle sleeve for damage.
9.
Replace nozzle into nozzle adapter until nozzle seats. Tighten
1/3 turn more using 5/8" socket wrench (40-45 inch-pounds).
See Figure 23.
10. Attach nozzle assembly to burner strap (see Figure 22).
11. Attach fuel and airline hoses to nozzle adapter assembly. See
Fuel and Air Line Replacement and Proper Routing.
12. Replace fan (see Fan, page 8).
13. Replace fan guard and upper shell (see Upper Shell Removal,
page 8).
Burner Strap
Figure 22 - Removing Nozzle Assembly, All Models
Nozzle Face
Nozzle
Nozzle Adapter
Air Line
Fitting
Figure 23 - Nozzle and Nozzle Adapter, All Models
105536
Nozzle
Assembly
Nozzle
Sleeve
Fuel Line
Fitting
For more information, visit www.desatech.com
For more information, visit www.desatech.co
SERVICE PROCEDURES
FUEL AND AIR LINE REPLACEMENT AND
PROPER ROUTING
1. Remove upper shell (see Upper Shell Removal, page 8).
2. Remove side cover screws using 5/16" nut driver (see Figure 15
or 16, page 9).
3. Remove side cover.
4. Inspect fuel and air line hoses for cracks and/or holes. If fuel
line hose is damaged, disconnect from nozzle adapter (see Fig-
ure 19, 20, or 21, page 10) and from fuel filter (see Fuel Filter,
page 9). If air line hose is damaged, disconnect from nozzle
adapter (see Figure 19, 20, or 21, page 10) and from barb fitting
on pump end cover (see Figure 24).
5. Install new air and/or fuel line. Attach one end of air line hose to
barb fitting on pump end cover (see Figure 24) and the other
end to nozzle adapter (see Figure 19, 20, or 21, page 10). Attach
one end of fuel line hose to fuel filter (see Fuel Filter, page 9)
and the other end to nozzle adapter (see Figure 19, 20, or 21,
page 10).
Note: Route hoses as shown in Figure 19, 20, or 21, page 10,
according to model. Hoses are not to touch photocell bracket.
6. Replace side cover.
7. Replace upper shell and fan guard (see Upper Shell Removal,
page 8).
Pump End Cover
Barb
Fitting
Air Hose
40/55T/70T
Models
Figure 24 - Air Hose to Barb Fitting
11
Barb Fitting
115T/165T
Models
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