Carrier 69NT40-541-505, Руководство по эксплуатации и обслуживанию, Страница: 105 / 143

7–13 T-368
7.11 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.
7.11.1 Condenser Fan Motor Remove/Replace
WARNING
!
Do not remove the condenser fan grille
before turning power OFF and discon-
necting 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
remove motor.
f. Loosely mount the new motor using new lock nuts.
g. Replace the shims in the same configuration as
they were removed.
h. Tighten the fan motor mounting bolts to properly
secure the motor.
i. To make sure that the motor is aligned properly,
slide the condenser fan onto the motor shaft
reversed but do not secure.
j. Rotate the fan to make sure the fan blades do
not contact the shroud:
1. If the fan motor is misaligned vertically, add or
remove shims to align.
2. If the fan motor is not properly centered, loosen
the mounting bolts, and adjust the motor posi-
tion on the bracket, and then secure the motor.
k. Remove the condenser fan, and connect the fan
motor wiring to the fan motor.
l. Place the condenser fan on the shaft facing the
correct direction. Adjust the fan to the correct
position, 37mm (1.5”) from the fan shroud, see
Figure 7.16 .
m. Use Loctite “H” on the fan set screws, and
tighten.
n. Refit the left and right infill panels.
o. Refit the condenser fan grille, ensuring the grille
is properly centered around condenser fan.
7.12 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 feels cooler
than the inlet, then the filter-drier should be
changed.
2. Check the moisture-liquid indicator, if 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 Section 7.4 ) and
replace filter-drier.
2. Evacuate the low side in accordance with Sec-
tion 7.6 .
3. After unit is in operation, inspect for moisture in
system and check charge.
7.13 EVAPORATOR COIL & HEATER ASSEMBLY
The evaporator section, including the evaporator coil,
should be cleaned regularly. The preferred cleaning
fluid is fresh water or steam. Another recommended
cleaner is Oakite 202 or similar, following manufac-
turer’s instructions.
The two drain pan hoses are routed behind the con-
denser fan motor and compressor. The drain pan
line(s) must be open to ensure adequate drainage.
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