Desa R 15 E UK Continued, Pump Pressure Adjustment, Fuel Filter, Spark Plug, Service Procedures

®

R 15 E UK

PORTABLE FORCED AIR HEATER

SERVICE

PROCEDURES

Continued

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 5). 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 below for correct pres- sure for each model.

5.Remove pressure gauge. Replace pres- sure gauge plug in filter end cover.

Pressure	Relief
Gauge	Valve
Plug

FUEL FILTER

1.Remove side cover screws using 5/16" nut-driver.

2.Remove side cover.

3.Pull rubber 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 rubber fuel line to fuel filter neck.

7.Replace side cover.

Fuel Filter

Fuel

Line

Side Cover

Figure 10 - Fuel Filter Removal

SPARK PLUG

1.Remove upper shell, page 7.

2.Remove fan (see page 7).

3.Remove spark plug wire from spark plug.

4.Remove spark plug from burner head using 13/16" open-end wrench.

5.Clean and regap spark plug electrodes as follows: 1.9 mm (.075") gap

6.Install spark plug in burner head.

7.Attach spark plug wire to spark plug.

8.Replace fan (see page 7).

9.Replace fan guard and upper shell.

Burner	Spark Plug
Head
	Wire
	Spark
	Plug

Figure 11 - Spark Plug Removal

Bend Here to Adjust Gap

Figure 8 - Pressure Gauge Plug Removal

	Pump
	Pressure
Model	(PSI/Bar)
50,000 Btu/Hr	4.9/0.338

1.9 mm (.075") Gap

Figure 12 - Spark Plug Gap

Pressure

Gauge

Figure 9 - Adjusting Pump Pressure

8 104975