Desa H.S.I. Serie Manual Del Propietário página 12

SERVICE PROCEDURES
Continued
6. Remove combustion chamber. Stand combus-
tion chamber on end with nozzle adapter
bracket on top (see Figure 20).
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.
Combustion
Chamber
Air Line
Hose
Fuel
Line
Hose
Photocell
Bracket
Photocell
Assembly
Side Cover
Figure 19 - Disconnecting Ignitor Wires
from Ignition Control Assembly (40/55/
60/70/110/115/155/165 Models Shown)
Ignitor Screw/
Washer Assembly
Ignitor
Element
Photocell
Bracket
Combustion
Chamber
Figure 20 - Ignitor Replacement
12
Nozzle
Adapter
Bracket
Ignitor
Ignitor
Wire
Ignition
Control
Assembly
Ignitor
Nozzle
Adapter
Bracket
Nozzle Adapter
Bracket Opening
www.desatech.com
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" nut driver (see Figure 20).
Torque .90 to 1.69 N-m (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 19).
12. Replace side cover (see Figures 15 or 16, page
10 or Figure 17, 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 14.
14. Replace photocell in photocell bracket. Route
wires as shown in either (see Figures 21 or 22
or Figure 25, page 13).
15. Replace fan (see page 9).
16. Replace fan guard and upper shell (see page 9).
Combustion
Chamber
Nozzle
Adapter
Bracket
Photocell
Bracket
Air Line
Hose
Figure 21 - Removing Air and Fuel Line
Hoses (40/55/60/70 Models Only)
Combustion
Chamber
Nozzle
Adapter
Bracket
Air Line
Hose
Fuel
Line
Hose
Figure 22 - Removing Air and Fuel Line
Hoses (110/115/155/165 Models Only)
Nozzle/
Adapter
Assembly
Fuel Line Hose
Nozzle/
Adapter
Assembly
Photocell
Bracket
114008-01A