Fuel Filter - Desa 125T Serie Manual De Propietario

SerViCe ProCedureS
Continued
5. Adjust pressure. Turn relief valve to right to
increase pressure. Turn relief valve to left to
decrease pressure. See specifications below
for correct pressure (see Figure 12).
6. Remove pressure gauge. Replace pressure
gauge plug in filter end cover.
7. Replace fan guard.
Pump
Model Pressure
125T 6.0 PSI
170T 6.0 PSI
200T 6.2 PSI
Figure 12 - Adjusting Pump Pressure

FUEL FILTER

1. Unplug heater.
2. Remove control cover screws using medium
phillips screwdriver.
3. Remove control cover.
4. Pull upper fuel line off fuel filter neck (see
Figure 13).
5. Carefully pry bushing, fuel filter and lower
fuel line out of fuel tank (see Figure 13).
6. Wash fuel filter with clean fuel and replace in
tank.
7. Attach upper fuel line to fuel filter neck.
8. Replace control cover.
Control Cover
Fuel Filter,
Bushing and
Lower Fuel Line
Upper Fuel Line
Figure 13 - Fuel Filter Removal
118637-01B
Pressure
Gauge
Screw
www.desatech.com
WARNING: HIGH VOLTAGE
WARNING: To avoid risk of burn
and electrical shock, never at-
tempt to service heater while it is
plugged in, operating or hot.
IGNITOR
1. Remove upper shell (See Upper Shell Re-
moval, page 10).
2. Remove fan (see page 10).
3. Remove 2 control cover screws with a phil-
lips screwdriver. Remove control cover (see
Figure 13).
4. Disconnect ignitor wires from ignition control
assembly (see Figure 14). 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 14).
6. Remove combustion chamber. Stand com-
bustion chamber on end with nozzle adapter
bracket on top (see Figure 15, page 12).
7. Remove ignitor screw with a 1/4" nut driver
for models using ignitor HA1000 or 5/16"
nut driver for models using ignitor HA1100.
Carefully remove ignitor from nozzle adapter
bracket.
8. Carefully remove replacement ignitor from
styrofoam packing.
Combustion
Chamber
Air Line Hose
Photocell
Bracket
Fuel Line
Hose
Photocell
Assembly
Control Cover
Figure 14 - Disconnecting Ignitor Wires
from Ignition Control Assembly
(170T Model Shown)
Nozzle Adapter
Bracket
Ignitor
Ignitor
Wire
Ignitor
Wire
Ignition
Control
Assembly
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