10. Disconnect wiring connections and remove the 4 mounting bolts.
11. Remove the motor.
12. To install the new motor, reverse Steps
V. BELT TENSION ADJUSTMENT
To adjust belt tension:
1. Loosen fan motor bolts.
2. Size 155 Units:
Move motor mounting plate up or down for proper belt tension (1/2 in. deflection with one finger).
Size 180 and 240 Units:
Turn motor jacking bolt to move motor mounting plate up or down for proper belt tension (3/8 in. deflec- tion at midspan with one finger [9 lb force]).
3. Tighten nuts.
4. Adjust bolts and nut on mounting plate to secure motor in fixed position.
VI. | |
A. 581A155 and 180 Units (Fig. 33) | |
1. | Shut off unit power supply. |
2. | Remove access panel(s) closest to the fan to be |
| adjusted. |
3. | Loosen fan hub setscrews. |
4. | Adjust fan height on shaft using a straightedge |
Fig. 31 — 581A155 | placed across the fan orifice. |
| |
5. | Tighten setscrews and replace panel(s). |
6. | Turn on unit power. |
B. 581A240 Units (Fig. 34) | |
1. | Shut off unit power supply. |
2. | Remove fan |
| screws. |
3. | Adjust fan height on unit, using a straightedge |
| placed across the fan orifice. |
NOTE: A
Fig. 32 — 581A180 and 240
6.Remove jacking bolt and tapped jacking bolt plate.
7.Remove the 2 screws that secure the motor mounting plate to the motor support channel.
8.Remove the 3 screws from the end of the motor sup- port channel that interfere with the motor slide path.
9.Slide out the motor and motor mounting plate.
NOTE: Dimension is in inches.
Fig. 33 — Condenser Fan Adjustment, 581A155 and 180
NOTE: Dimension is in inches.
