Pump Rotor - Desa RC40 Owner's Manual

SERVICE PROCEDURES
12
SERVICE PROCEDURES
Continued

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 (see
Figure 25 or 26).
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" (.076-.101 mm) if
needed (see Figure 27).
Note: Rotate Rotor one full turn to insure the gap is .003"/.004"
(.076-.101 mm) at tightest position. Adjust if needed.
10. Install blades, pump plate, air filters, and filter end cover.
11. Replace fan guard and upper shell (see Upper Shell Removal,
page 8).
12. Adjust pump pressure (see Pump Pressure Adjustment, page 9).
Note: If rotor is still binding, proceed as follows.
13. Perform steps 1 thru 6.
Insert
Rotor
Air Output
Filter
ROTOR-Domestic
PFA/P 056B
Figure 25 - Rotor Location, 40/55T/70T Models
Rotor
Insert
Air Output
TOR-Domestic PFA/P 059A
Filter
Figure 26 - Rotor Location, 115T/165T Models
Blade
Pump Plate
Air Intake Filter
Filter End Cover
Fan Guard
Blade
Pump Plate
Air Intake Filter
Filter End Cover
Fan
Guard
For more information, visit www.desatech.com
For more information, visit www.desatech.com
14. Place fine grade sandpaper (600 grit) on flat surface. Sand rotor
lightly in "figure 8" motion four times (see Figure 28).
15. Reinstall insert and rotor.
16. Perform steps 10 thru 12.
Gap Adjusting Screw
Blade
Gap Adjusting Screw
Figure 27 - Gap Adjusting Screw Locations
Figure 28 - Sanding Rotor
IGNITION CONTROL ASSEMBLY
WARNING: High Voltage!
1. Unplug heater.
2. Remove side cover screws (4) using 5/16" nut-driver to ex-
pose ignition control assembly (see Figure 15 or 16, page 9).
3. Remove fuse cover (see Figure 29).
4. Remove fuse from fuse clips (see Figure 29).
5. Replace fuse with fuse of the same type and rating (GMA-10).
Do not substitute a fuse with a higher current rating.
6. Replace fuse cover (see Figure 29).
7. Replace side cover (see Figure 15 or 16, page 9).
Figure 29 - Replacing Fuse
.003"/.004"
(.076-.101 mm)
Gap Measured
With Feeler
Gauge
Rotor
Sandpaper
Fuse
Fuse
Clips
Cover
Fuse
105536