Carrier 50HJ015 - Page 13

8 Rotate motor mount assembly back past original posi¬
tion toward evaporator coil.
9. R emove motor mounting nuts D and E (both sides).
10. L ift motor up through top of unit.
11 Reverse above procedure to reinstall motor.
12. Check and adjust belt tension as necessary.
Fig. 19 - Evaporator-Fan Pulley Alignment
and Adjustment
Fig. 20 — 50HJ015 Evaporator-Fan Motor Section
Evaporator Fan, 50HJ024 Units
PERFORMANCE ADJUSTMENT - The 50HJ024 unit has
fixed pulleys. Fan speed can be adjusted (if necessary) only
by changing the pulley(s) and belt. See Table 8 for alter¬
nate drive selection.
To align fan and motor pulleys (see Fig. 19):
1. Loosen fan pulley setscrews.
2. Slide fan pulley along fan shaft.
3. Make angular alignment by loosening motor from mount¬
ing plate.
SERVICE AND REPLACEMENT (See Fig. 21) - The
50HJ024 unit uses a fan motor mounting system that fea¬
tures a slide-out motor mounting plate. To replace or serv¬
ice the motor, slide out the bracket.
1. Remove the evaporator-fan access panel and the heat¬
ing control access panel.
2. Remove the center post (located between the evapora¬
tor fan and heating control access panels) and all screws
securing it
3. Loosen nuts on the two carriage bolts in the motor mount¬
ing base.
4. Using jacking bolt under motor base, raise motor to
top of slide and remove belt. Secure motor in this po¬
sition by tightening the nuts on the carriage bolts.
5. Remove the belt drive.
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,
10. Disconnect wiring connections and remove the 4 mount¬
ing bolts.
11. Remove the motor.
12. To install the new motor, reverse Steps 1-11.
NOTE: A 3V2-in. bolt and threaded plate are included in the install¬
er’s packet. They can be added to the motor support channel below
the motor mounting plate to aid in raising the motor.
Fig. 21 — 50HJ024 Evaporator-Fan Motor Section
13