Carrier 40RFAA07 - Page 24

24
Fig. 29 — Fan Assembly for Units with 3 Hp Motor
Reassembly of Motor and Fan Assembly
1. See Fig. 28 for 2.4 Hp motor units; see Fig. 29 for 3 Hp motor
units. Place motor on flat surface.
2. If required, install stator limit switch on the stator with two
plastic push rivets (P/N: HH18HA597).
3. Fit motor wire harness into keyhole feature on the side of the
stator and pull wire harness out prior to fixing the motor to
the stator. See Fig. 30.
Fig. 30 — Stator Keyhole Location
4. The 2.4 HP motors attach to the stator from the bottom by set-
ting the stator assembly on the motor. The 3.0 HP motors
attach to the stator from the top and are gently lowered into
the recess for the motor.
5. For the 2.4 HP motor, install four 1/4-20 x 1-in. hex head
machine screws (P/N: AC67AP170) to connect stator to
motor. Tighten to 50 in.-lb (5.65 Nm).
6. For the 3 HP motor, install six 1/4-20 x 1-in. hex head
machine screws (P/N: AC67AP170) to connect stator to
motor. Tighten to 30 in.-lb (3.39 Nm).
7. Install rotor on motor by lining up the rotor holes to the motor
holes. The rotor has self-aligning features that engage into the
motor holes. Press fan rotor down until it is flush with the
motor flange.
8. Install three 1/4-20 x 1-in. hex head machine screws
(P/N: AC67AP170) through the holes in the rotor. Tighten
to 50 in.-lb (5.65 Nm)
9. Align holes of composite fan inlet casing with screw holes on
the top flange of the fan stator. Using a socket extension and
either a 1/4-in. or 3/8-in. drive socket, install four #10-16 hex
head machine screws (P/N: AP13ADAD128) and tighten to
14 in.-lb (1.58 Nm).
10. Final assembly should have a small clearance between top of
plastic rotor and underside of casing lip. Spin rotor by hand to
ensure no contact or rubbing between these two parts.
Reinstalling Motor and Fan Assembly
1. Re-install the two lower quarter round retainers
2. Align motor harness/grommet aligned with the control box
3. Drop fan assembly down into fan deck opening and slide it so
that the lip is in the fan deck recess and is retained by the
quarter round brackets.
4. Install the remaining quarter round brackets
1
2
3
4
5
6
7
Stator Keyhole