Pump Rotor - Desa R110M3 Owner's Manual

Pump Rotor

(Procedure if rotor is binding)
1. Remove upper shell (see page
13).
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 26).
Note: Rotate rotor one full turn to
insure the gap is .003"/.004" at
tightest position. Adjust 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
page 14).
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 Figure 27).
15. Reinstall insert and rotor.
16. Perform steps 10 through 12
above.
101697
Insert
Rotor
50 ROTOR
PFA/P 056
Figure 24 - Rotor Location, 70,000 BTU/Hr Model
Blade
Insert
100 ROTOR-Domestic PFA/P 059A
Rotor
Air Output
Filter
Figure 25 - Rotor Location, 110,000 and 150,000 BTU/Hr Models
Gap Adjusting Screw
Blade
Figure 26 - Gap Adjusting Screw Locations
Sandpaper
Figure 27 - Sanding Rotor
Blade
Air Intake
Pump
Filter
Plate
Air Output
Filter
Pump
Air Intake
Plate
Filter
Filter End
Cover
.003"/.004" Gap
Measured With
Feeler Gauge
Rotor
Gap Adjusting Screw
Filter End
Cover
Fan Guard
Fan Guard
17