Master Lock B100CEA Owner's Manual page 12

PORTABLE FORCED AIR HEATERS
SERVICE
PROCEDURES
Continued
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 .076/.101
mm (.003"/.004") if needed (see Fig-
ure 27).
Note: Rotate rotor one full turn to insure the
gap is .076/.101 mm (.003"/.004") at tight-
est 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 10).
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 28).
15. Reinstall insert and rotor.
16. Perform steps 10 through 12 above.
R
Insert
Rotor
Figure 25 - Rotor Location, 35/70,000 Btu/Hr Models
Insert
Rotor
Air Output
Filter
Figure 26 - Rotor Location, 100/150,000 Btu/Hr Models
Gap Adjusting
Screw
Blade
Gap Adjusting
Screw
Figure 27 - Gap Adjusting Screw
Locations
12
Blade
Air
Pump
Intake
Plate
Filter
Filter End
Cover
Air Output
Filter
Pump
Blade
Plate
Air Intake
Filter
.076/.101 mm (.003"/.004") Gap
Measured With Feeler Gauge
Sandpaper
Rotor
Figure 28 - Sanding Rotor
Fan Guard
Filter End
Cover
Fan Guard
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