Carrier 69NT40-561-201, Operation & Service Manual, Page: 89 / 117

6 − 8 T-364
g. Slide the top and bottom drain lines back into place
through the side support bracket.
h. Using the two supplied straight connectors and con-
tact adhesive reconnect the drain lines.
i. Slide the condenser fan motor wiring harness back
through the side support bracket and refit to condens-
er motor.
j. Replace all wire ties that were removed to properly
secure the drain line and wiring.
k. Reseal the wire harness and drain line penetrations
with the putty.
l. Slide the condenser fan onto the motor shaft reversed
but do not secure.
m. Refit the condenser fan shroud to the unit. Use the
condenser fan as a guide to ensure the shroud is
properly centered around the fan.
n. Remove the condenser fan, and place it on the shaft
facing the correct direction. Adjust the fan to the cor-
rect position, 37mm (1.5”) from the fan shroud.
o. Use Loctite “H” on the fan set screws, and tighten.
p. Refit left and right infill panels.
q. Refit the condenser fan grille, ensuring the grille is
properly centered around the condenser fan.
r. Pressure / leak test the coil and filter drier connec-
tions, refer to Section 6.5.
s. Evacuate the entire unit, refer to Section 6.6.
t. Recharge the unit with the charge shown on the unit
serial plate, refer to Section 6.7. It is important for
proper unit operation that the charge is weighed into
the unit.
6.11 CONDENSER FAN AND FAN MOTOR
The condenser fan rotates counter-clockwise (viewed
from front of unit). The fan pulls air through the con-
denser coil, and discharges the air horizontally through
the front of the unit.
6.11.1 Condenser Fan Motor Remove/Replace
WARNING
Do not remove the condenser fan grille
before turning power OFF and disconnect-
ing the power plug.
a. Remove the condenser fan grille, retain all bolts and
washers for reuse.
b. Remove the condenser fan by loosening the two set
screws.
c. Disconnect the condenser fan motor wiring.
CAUTION
Take necessary steps (place plywood over
coil or use sling on motor) to prevent motor
from falling into condenser coil.
d. Note the number of shims on each side of the motor
as the same configuration will be required to refit the
new motor.
e. Remove the fan motor mounting hardware and re-
move motor.
f. Loosely mount the new motor using new lock nuts.
g. Connect the fan motor wiring to the new fan motor.
h. Replace the shims in the same configuration as they
were removed.
i. Tighten the fan motor mounting bolts to properly se-
cure the motor.
j. To make sure that the motor is aligned properly, slide
the condenser fan onto the motor shaft reversed but
do not secure.
k. Rotate the fan to make sure the fan blades do not con-
tact the shroud:
1. If the fan motor is misaligned vertically, add or re-
move shims to align.
2. If the fan motor is not properly centered, loosen the
mounting bolts, and adjust the motor position on
the bracket, and then secure the motor.
l. Remove the condenser fan, and connect the fan mo-
tor wiring to the fan motor.
m. Place the condenser fan on the shaft facing the cor-
rect direction. Adjust the fan to the correct position,
37mm (1.5”) from the fan shroud.
n. Use Loctite “H” on the fan set screws, and tighten.
o. Refit the left and right infill panels.
p. Refit the condenser fan grille, ensuring the grille is
properly centered around condenser fan.
6.12 FILTER DRIER
a. To check filter drier:
1. Test for a restricted or plugged filter drier by feeling
the liquid line inlet and outlet connections of the
drier cartridge. If the outlet side feels cooler than
the inlet side, then the filter drier should be
changed.
2. Check the moisture-liquid indicator if the indicator
shows a high level of moisture, the filter drier
should be replaced.
b. To replace filter drier:
1. Pump down the unit (refer to paragraph 6.4). Eva-
cuate if unit is not equipped with service valves.
Then replace filter drier.
2. Evacuate the low side in accordance with para-
graph 6.6.
3. After unit is in operation, inspect for moisture in
system and check charge.