Desa REM50C, B50H owner manual Nozzle, Pump Rotor, Continued

Nozzle

1.	Remove upper shell (see page 8).
2.	Remove fan (see page 8).
3.	Remove fuel and air line hoses from
	nozzle assembly.
4.	Turn nozzle assembly 1/4 turn to left
	and pull toward motor to remove.
5.	Place plastic hex-body into vise and
	lightly tighten.
6.	Carefully remove nozzle from the
	nozzle adapter using 5/8" socket
	wrench.
7.	Blow compressed air through face of
	nozzle. This will free any dirt in

Combustion

Chamber

Nozzle	Burner	Nozzle
	Strap	Assembly
Assembly

	nozzle area.
8.	Inspect nozzle seal for damage.
9.	Replace nozzle into nozzle adapter

Air Line Hose

Fuel Line Hose

until nozzle seats. Tighten 1/3 turn

more using 5/8" socket wrench (40-

45 inch-pounds).

10. Attach nozzle assembly to burner

Figure 9 - Removing Air and Fuel Line Figure 10 - Removing Nozzle Assembly Hoses

strap.

11. Attach fuel and airline hoses to

nozzle assembly.

12. Replace fan (see page 8).

13. Replace fan guard and upper shell.

Pump Rotor

(Procedure if rotor is binding)

1.Remove upper shell (see page 8).

2.Remove filter end cover screws using 5/16" nut-driver.

3.Remove filter end cover and air filters.

4.Remove pump plate screws using 5/16" nut-driver.

5.Remove pump plate.

6.Remove rotor, insert, and blades.

7.Check for debris in pump. If debris is found, blow out with compressed air.

8.Install insert and rotor.

9.Check gap on rotor. Adjust to

.003"/.004" if needed (see Figure 13).

Note: Rotate rotor one full turn to insure the gap is .003"/.004" at tightest position. Adjust if needed.

Nozzle Face

Nozzle

Insert

50 ROTOR

Nozzle

Seal

Nozzle

Adapter

Air Line	Fuel Line
	Fitting
Fitting

Figure 11 - Nozzle and Nozzle Adapter

Blade	Pump
	Plate	Air Intake
		Filter

Filter End

Cover

Fan Guard

Rotor

Air Output

PFA/P 056

Filter

Continued

10

Figure 12 - Rotor Location

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