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Pump Rotor |
| Pump |
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| Intake |
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(Procedure if rotor is binding) |
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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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| Cover |
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2. Remove filter end cover |
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| Fan Guard | |||
| screws using 5/16" nut- |
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| 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. |
| Plate |
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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 .003"/.004" |
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| Cover | Fan Guard | |
| (.076/.101 mm) if needed |
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| (90,000 BTU/Hr | |
| (see Figure 33). | Insert |
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| Model Shown) | |
Note: Rotate rotor one | Rotor |
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full turn to insure the gap is |
| Air |
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.003"/.004" (.076/.101 mm) at |
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| Output |
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tightest position. Adjust if |
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150 ROTOR | PFA/P 059 |
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needed. |
| Filter |
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10. Install blades, pump plate, | Figure 32 - Rotor Location, 90/150,000 BTU/Hr Models | ||||||
| air filters, and filter end | ||||||
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| cover. |
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11. Replace fan guard and | Gap Adjusting |
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| upper shell. | Screw |
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12.Adjust pump pressure (see page 14).
Note: If rotor is still binding, |
| .003"/.004" | |
proceed as follows. |
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| (.076/.101 mm) Gap | ||
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13. Perform steps 1 through 6 |
| Measured With | |
above. |
| Feeler Gauge | |
14. Place fine grade sandpaper |
| Sandpaper | |
(600 grit) on flat surface. | Blade | Rotor | |
Sand rotor lightly in | |||
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“figure 8” motion four |
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times (see Figure 34). | Gap |
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15. Reinstall insert and rotor. |
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Adjusting |
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16. Perform steps 10 through |
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Screw |
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12 above. |
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Figure 33 - Gap Adjusting |
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| Screw Locations | Figure 34 - Sanding Rotor |
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