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| Blade |
| Air |
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Pump Rotor |
| Pump |
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| Intake |
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(Procedure if rotor is binding) |
| Plate |
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| Filter |
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1. Remove upper shell (see |
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| Filter End |
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| page 10). |
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2. Remove filter end cover |
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| Cover |
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| Fan Guard | |||
| screws using 5/16" nut- |
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| (90,000 BTU/Hr | ||
| driver. |
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| Model Shown) | ||
3. Remove filter end cover |
| Insert |
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| and air filters. |
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| Rotor |
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4. | Remove pump plate |
| Air Output |
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| screws using 5/16" nut- |
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| 50 ROTOR | PFA/P 056 |
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| driver. |
| Filter |
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5. | Remove pump plate. | Figure 31 - Rotor Location, 30/70,000 BTU/Hr Models | |||||
6. Remove rotor, insert, and | |||||||
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| blades. |
| Blade | Pump |
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7. Check for debris in pump. |
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| Air |
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| If debris is found, blow |
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| out with compressed air. |
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| Intake |
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| Filter |
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8. Install insert and rotor. |
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9. Check gap on rotor. |
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| Adjust to .076/.101 mm if |
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| Cover | Fan Guard | |
| needed (see Figure 33). |
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| (90,000 BTU/Hr | |
Note: Rotate rotor one | Insert |
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| Model Shown) | |||
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full turn to insure the gap is |
| Rotor |
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.076/.101 mm at tightest |
| Air |
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position. Adjust if needed. |
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| Output |
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| 150 ROTOR |
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| PFA/P 059 |
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10. Install blades, pump plate, |
| Filter |
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| air filters, and filter end |
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| cover. | Figure 32 - Rotor Location, 90/150,000 BTU/Hr Models | |||||
11. Replace fan guard and | |||||||
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| upper shell. |
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12. Adjust pump pressure (see | Gap Adjusting |
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| page 14). |
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| Screw |
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Note: If rotor is still binding, |
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proceed as follows. |
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13. Perform steps 1 thru 6 |
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| .076/.101 mm Gap |
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| above. |
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| Measured With |
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14. Place fine grade sandpaper |
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| Feeler Gauge |
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| (600 grit) on flat surface. |
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| Sandpaper | ||
| Sand rotor lightly in |
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| “figure 8” motion four | Blade | Rotor |
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| times (see Figure 34). |
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15.Reinstall insert and rotor.
16.Perform steps 10 thru 12
above. | Gap |
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Adjusting |
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| Screw |
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| Figure 33 - Gap Adjusting |
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| Screw Locations | Figure 34 - Sanding Rotor |
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