Pump Rotor - Desa B200 Owner's Manual

SERVICE
PROCEDURES
Continued
Nozzle Face
Nozzle Seal
Nozzle
Burner
Head
Air Line
Fitting
Figure 16 - Removing Nozzle
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PUMP ROTOR

(Procedure if Rotor is Binding)
1. Remove upper shell (see Upper Shell
Removal, 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 18).
Fuel
Note: Rotate rotor one full turn to insure the
Line
gap is .003"/.004" at tightest position. Ad-
Fitting
just if needed.
10. Install blades, pump plate, air filters,
and filter end cover.
11. Replace fan guard and upper shell.
12. Adjust pump pressure (see Pump Pres-
sure Adjustment, page 8).
Note: If rotor is still binding, proceed as
follows.
13. Perform steps 1 through 6 above.
14. Place fine grade sandpaper (600 grit)
on flat surface. Sand rotor lightly in
"figure 8" motion four times (see Fig-
ure 19).
15. Reinstall insert and rotor.
16. Perform steps 10 through 12 above.
Insert
Rotor
Air Output Filter
Figure 17 - Rotor Location
OWNER'S MANUAL
Figure 18 - Gap Adjusting Screw
Locations
Figure 19 - Sanding Rotor
Blade
Pump
Plate
Air
Intake
Filter
Fan Guard
11
Gap Adjusting
.003"/.004" Gap
Screw
Measured With
Feeler Gauge
Rotor
Blade
Gap Adjusting Screw
Sandpaper
Filter End
Cover