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TM 5-4120-386-14
4-13. ORGANIZATIONAL TROUBLESHOOTING TABLES.
Table 4-2. Organizational Troubleshooting.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
NOTE: Before using this table, be sure you have performed all applicable
operating checks.
AIR CONDITIONER
1. AIR CONDITIONER FAILS TO OPERATE
Step 1.
Check to see that main power cable is comected.
Connect cable.
Step 2. Make sure that you are using the correct voltage.
HIGH VOLTAGE is used in the operation of this equipment. DEATH ON
CONTACT may result if personnel fail to observe safety precautions. Never
work on electrical equipment unless there is another person nearby who is
familiar with the operation and hazards of the equipment and who  -is
competent in administering first aid. When the technician is aided by
operators, he must warn them about dangerous areas.
Check line voltage with voltmeter for 208 VAC, three phase,
50/60 Hz power.
Step 3.
Inspect main power receptacle connections for breaks.
Replace connector. (Refer to paragraph 4-27.)
Step 4.
Check for loose electrical comections.
Tighten comections.
Step 5. Inspect rotary selector switch for incorrect setting.
(See Table 2-2, Operator Control Setting.)
Turn selector switch to COOL or VENTILATE.

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