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ARMY TM 9-4120-381-14
NAVY EE-000- CA-MMA-010/7053-AC
AIR FORCE TO 35E9-136-31
Section V. UNIT TROUBLESHOOTING
4-16. GENERAL. This section contains unit troubleshooting information for locating and correcting most of the
operating troubles which may develop in the air conditioner.
NOTE
Before you use the table, be sure you have performed all applicable PMCS (Table 4-1).
4-17. TROUBLESHOOTING. Each malfunction for an individual component is listed in Table 4-2. The malfunction is
followed by a list of tests or inspections which help to determine probable causes and corrective actions to take. All
malfunctions that may occur and all tests or inspections and corrective actions may not be listed. If a malfunction is not
listed or is not corrected by corrective action, notify your supervisor.
WARNING
· HIGH VOLTAGE
is used in the operation of this equipment.
DEATH ON CONTACT
may result if personnel fail to observe safety precautions.
l 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.
l Whenever possible, the input power supply to equipment must be shut off
before beginning work on the equipment. Take particular care to ground every
capacitor likely to hold a dangerous potential. When working inside the
equipment, after the power has been turned off, always ground every part
before touching it.
l Be careful not to contact high-voltage connections of 208 volts ac input when
installing or operating this equipment.
l Whenever the nature of the operation permits, keep one hand away from the
equipment to reduce the hazard of current flowing through vital organs of the
body.
l Do not operate the equipment without all panels and covers in place and tightly
secured.
l Do not be misled by the term "low voltage." Potentials as low as 50 volts may
cause death under adverse conditions.
4-22
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