Fuel Filter - Desa and 55 Owner's Manual

Portable forced air heater 35,000, 50,000, and 55,000 btu/hr h.s.i. series
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SERVICE
PROCEDURES
Continued

FUEL FILTER

1. Remove 4 side cover screws using
5/16" nut-driver.
2. Remove side cover.
3. Pull upper fuel line off fuel filter neck.
4. Carefully pry bushing and fuel filter out
of fuel tank.
5. Wash fuel filter with clean fuel and re-
place in tank.
6. Attach upper fuel line to fuel filter neck.
7. Replace side cover.
Fuel Filter
Side Cover
Upper Fuel Line
Figure 8 - Fuel Filter Removal
102388
IGNITOR
1.
Remove upper shell and fan guard (see
page 6).
2.
Remove fan (see page 6).
3.
Remove 4 side cover screws with a
5/16" nut driver. Remove side cover
(see Figure 8).
4.
Disconnect ignitor wires (gray) from
ignition control assembly (see Figure
9). Pull the ignitor wires up through the
hole in the lower shell.
5.
Disconnect fuel line hose and air line
hose. Remove photocell from photocell
bracket (see Figure 9).
6.
Remove combustion chamber. Stand
combustion chamber on end with nozzle
adapter bracket on top (see Figure 10).
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"
nut driver (see Figure 10). Torque 10 to
20 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 Wiring Diagrams, page
10, for correct terminal locations.
12. Replace side cover (see Figure 8).
13. Connect and route fuel line hose and
air line hose to nozzle adapter (see Fig-
ure 9).
14. Replace photocell in photocell bracket.
Route wires as shown in Figure 11,
page 8.
15. Replace fan (see page 6).
16. Replace fan guard and upper shell (see
page 6).
7
OWNER'S MANUAL
Combustion
Chamber
Air Line
Hose
Fuel
Line
Hose
Photocell
Bracket
Photocell
Assembly
Side Cover
Figure 9 - Disconnecting Ignitor Wires
from Ignition Control Assembly
Photocell
Bracket
Combustion
Chamber
Figure 10 - Ignitor Replacement
Nozzle
Adapter
Bracket
Ignitor
Ignitor
Wires
(Gray)
Ignition
Control
Assembly
Ignitor
Screw
Ignitor
Ignitor
Element
Nozzle
Adapter
Bracket
Nozzle Adapter
Bracket Opening
Continued

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Rem35bR35dB50hRem50cR55aRem55a

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