Desa BY100CE User Manual download pdf (Page 17)

102422

Pump Rotor

(Procedure if rotor is binding)

1. Remove upper shell (see

page 10).

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 Figure 27).

Note:

Rotate rotor one

full turn to insure the gap is

.076/.101 mm (.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 thru 6

above.

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

above.

Figure 25 - Rotor Location, 30/70,000 Btu/Hr Models

Sandpaper

Figure 28 - Sanding Rotor

Gap Adjusting

Screw

Gap

Adjusting

Screw

Blade

Figure 27 - Gap Adjusting

Screw Locations

Figure 26 - Rotor Location, 90/150,000 Btu/Hr Models

Insert

Blade

Rotor

Pump

Plate

Air Intake

Filter

Air

Output

Filter

Pump

Plate

Insert

Rotor

Blade

Filter End

Cover

Air

Intake

Filter

Air Output

Filter

Fan Guard

.076/.101 mm (.003"/.004") Gap

Measured With Feeler Gauge

Rotor

Fan Guard

Filter End

Cover

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 31 32

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