Desa BY150ECA User Manual

Page 11

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Pump Pressure
Adjustment

1. Remove pressure gauge plug from

filter end cover.

2. Install accessory pressure gauge

(part number HA1180).

3. Start heater (see Operation, page

7). Allow motor to reach full speed.

4. Adjust pressure. Turn relief valve

to right to increase pressure. Turn
relief valve to left to decrease
pressure. See specifications at right
for correct pressure for each model.

5. Remove pressure gauge. Replace

pressure gauge plug in filter end
cover.

Relief
Valve

Pressure
Gauge
Plug

Figure 9 - Pressure Gauge Plug Removal

Pump

Model

Pressure

100,000 Btu/Hr

4.5 PSI

150,000 Btu/Hr

5.0 PSI

Fuel Filter

1. Remove 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, fuel filter,

and lower fuel line out of fuel tank.

5. Wash fuel filter with clean fuel and

replace in tank.

6. Attach upper fuel line to fuel filter

neck.

7. Replace side cover.

Figure 10 - Adjusting Pump Pressure

Pressure
Gauge

Side Cover

Fuel Filter, Bushing,
and Lower Fuel Line

Upper Fuel Line

Figure 11 - Fuel Filter Removal

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