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Section III. REPAIR PARTS, SPECIAL TOOLS AND EQUIPMENT
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TM-5-4120-282-13 Air Conditioner Floor Mounted Aie Cooled Electric Motor Driven 3/4 HP 60 Cycle AC Single Phase 9000 BTU/HR Manual
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Servicing Refrigerant System - TM-5-4120-282-130062
69. Cooling Insufficient
Possible Remedy
Probable Cause
a. Replace expansion valve
a. Expansion valve defective.
(para 81).
Replace compressor assembly
b.
Compressor assembly defect-
(para 76).
ive.
c. Recharge refrigerant system
c. Refrigerant charge low.
(para 74).
Cooling Excessive
Possible Remedy
Probable Cause
a. Replace expansion valve
a. Expansion valve defective.
(para 81).
71. Air Conditioner Noisy During Operation
Possible Remedy
Probable Cause
a. Replace compressor assembly
a. Compressor assembly defect-
(para 76).
ive.
REMOVAL AND INSTALLATION OF MAJOR COMPONENTS
Section V.
AND AUXILIARIES
72. General
a. The air conditioner, after it is started, operates automatically.
The relationship of automatic components, controls, and instruments are
explained in the operation analysis for the maintenance of the air con-
ditioner.
b.  A wiring diagram (fig. 6) and refrigerant cycle diagram (fig.
11) are included for maintenance of the components.
c. Procedures for relieving refrigerant charge, leak testing,
evacuation, and charging the refrigerant system are included for ser-
vicing the refrigerant system.
d.  General maintenance of components such as lines, tubing, valves
and fittings are included in this section.
73. Wiring Harness Leads
The electrical system in the air conditioner is complete by indivi-
dual wires laced or enclosed in a harness.

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