Assessments - 6, GPA: 3.7 ( )

Fabricante : Desa Arquivo Tamanho: 1.89 mb Arquivo Nome : Língua de Ensino:

Remove side cover screws using 5/16" nutdriver. 2. Remove side cover. 3. Pull upper fuel line off fuel filter neck (see Figure 15 or 16). 4. Carefully pry bushing, fuel filter, and lower fuel line (115T/165T models only) out of fuel tank (see Figure 16). 5. Wash fuel filter with clean fuel and replace in tank. 6. Attach upper fuel line to fuel filter neck. 7. Replace side cover. SERVICE PROCEDURES Continued Figure 17 - Disconnecting Ignitor Wires from Ignition Control Assembly Combustion Chamber Photocell Bracket Photocell Assembly Air Line Hose Fuel Line Hose Ignitor Wire (Yellow) Ignitor Nozzle Adapter Bracket Ignition Control Assembly Side Cover Photocell Bracket Ignitor Ignitor Screw/ Washer Assembly Nozzle Adapter Bracket Ignitor Element Combustion Chamber Nozzle Adapter Bracket Opening Figure 18 - Ignitor Replacement IGNITOR 1. Remove upper shell and fan guard (See Upper Shell Removal, page 9). 2. Remove fan (see page 9). 3. Remove 4 side cover screws with a 5/1 6" nut driver. Remove side cover (see Figures 15 and 16). 4. Disconnect ig nitor wires ( yel low) fr om igniti on cont ro l assemb ly (see Figure 17). Pull the i gnitor wire s up through the hole i n the lower shel l. 5. Disconnect fuel line hose and air line hose. Remove photocell from photocell bracket (see Figure 17). 6. Remove combustion chamber. Stand combustion chamber on end with nozzle adapter bracket on top (see Figure 18). SERVICE PROCEDURES Continued 7. Remove ignitor screw with a 1/4" nut driver. Carefully remove ignitor from nozzle adapter bracket. CAUTION: Do not bend or strike ignitor element. Handle with care. 8. Carefully remove replacement ignitor from styrofoam packing. 9. Carefully guide ignitor into opening in nozzle adapter bracket. Do not strike ignitor element. Attach ignitor to nozzle adapter bracket with screw using a 1/4" nutdriver(seeFigure 18, page 11). Torque 8 to 15 in. lbs. Do not over torque. 10. Replace combustion chamber. 11. Route the ignitor wires back down through the hole in the lower shell. Connect wires to the ignition control assembly (see Figure 17, page 11). 12. Replace side cover (see Figures 15 and 16, page 11). 13. Connect and route fuel line hose and air line hose to nozzle adapter assembly. See Fuel and Air Line Replacement and Proper Routing, page 13. 14. Replace photocell in photocell bracket. Route wires as shown in Figure 19, 20, or 21. 15. Replace fan (see Fan, page 9). 16. Replace fan guard and upper shell (see Upper Shell Removal, page 9). Combustion Hose Chamber Nozzle/ Adapter Burner Strap Assembly Photocell Bracket Air Line Fuel Line Hose Figure 19 - Removing Air and Fuel Line Hoses, (40/55T/70T Models Only) Nozzle/ Adapter Assembly Air Line Hose Figure 20 - Removing Air and Fuel Line Hoses, (115T Model Only) Nozzle/ Adapter Assembly Photocell Bracket Air Line Hose Figure 21 - Removing Air and Fuel Line Hoses (165T Model Only) NOZZLE ASSEMBLY 1. Remove upper shell (see Upper Shell Removal, page 9). 2. Remove fan (see Fan, page 9). 3. Remove fuel and air line hoses from nozzle assembly (see Figure 19, 20, or 21). 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. Combustion Chamber Burner Strap Photocell Bracket Fuel Line Hose Fuel Line Hose Combustion Chamber Burner Strap Nozzle Assembly Burner Strap Figure 22 - Removing Nozzle Assembly, All Models 111168-01A SERVICE PROCEDURES Continued 6. Carefullyremovenozzlefromthenozzleadapter 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 9). 13. Replace fan guard and upper shell (see Upper Shell Removal, page 9). Nozzle Face Air Line Fitting Fuel Line Fitting Nozzle Nozzle Sleeve Nozzle Adapter Figure 23 - Nozzle and Nozzle Adapter, All Models FUEL AND AIR LINE REPLACEMENT AND PROPER ROUTING 1. Remove upper shell (see Upper Shell Removal, page 9). 2. Remove side cover screws using 5/16" nut driver (see Figure 15 or 16, page 11). 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 Figure 19, 20, or 21, page 12) and from fuel filter (see Fuel Filter, page 11). If air line hose is damaged, disconnect from nozzle adapter (see Figure 19, 20, or 21, page 12) 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 ...

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