USE AND MAINTENANCE
FANS
The evaporator fans are equipped with either 9 watt fan motors, 1550 RPM’s, or 12 watt fan motors, 1650 RPM’s. Both motors have a counter clockwise rotation when viewed from the shaft end. The fan blades are 8” in diameter and the blades are pitched as shown on the chart below. It is impor- tant that the blade pitch be maintained as spec- ified. Do not attempt a field modification by altering the blades.
2
Fan motors may be changed with an easy
1. Unplug the fan motor, easily accessible out side the plenum
2. Remove two fasteners, then lift out the | Model | ORB, ORBH, ONRB, & ONRBH |
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entire fan basket |
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| No. | 2 Door | 3 Door | 4 Door | 5 Door | 6 Door | ||
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| 2 | 3 | 4 | 5 |
| 6 |
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| Fans |
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| Blade | 37o | 37o | 37o | 37o | 37o | ||
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| Pitch |
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37 | 37 | 2 DOOR |
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| ORBH |
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| 8’ |
| 12’ | |
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| No. | 2 |
| 3 |
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| Fans |
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| 3 DOOR - 8’ |
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| Blade | 37 | o | 37 | o |
37 | 37 | 37 | 6 DOOR (2) |
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4 DOOR - 12’
37 | 37 | 37 | 37 |
5 DOOR
37 | 37 | 37 | 37 | 37 |
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