28
4. Using jacking bolt under motor base, raise motor to top of
slide and remove belt. Secure motor in this position 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 support
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.
Belt Tension Adjustment —
To adjust belt tension:
1. Loosen fan motor bolts.
2. Adjust belt tension:
a. Size 015 Units: Move motor mounting plate up or
down for proper belt tension (
1
/
2
in. deflection with
one finger).
a. Size 017, 025 Units: Turn motor jacking bolt to
move motor mounting plate up or down for proper
belt tension (
3
/
8
in. deflection 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.
Fig. 30 — Evaporator-Fan Pulley Alignment
and Adjustment
Fig. 31 — 50HJ015 Evaporator-Fan
Motor Section
NOTE: A 3
1
/
2
-in. bolt and threaded plate are included in the
installer’s packet. They should be added to the motor support chan-
nel below the motor mounting plate to aid in raising the motor. The
plate part number is 50DP503842. The adjustment bolt is
3
/
8
- 16 x
1
3
/
4
LG.
Fig. 32 — 50HJ017, 025 Evaporator-Fan
Motor Section
Summary of Contents for 50HJ015-025
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Page 32: ...32 Fig 36 Typical Wiring Schematic 50HJ017 460v Shown...
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