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4-11.
TM5-4120-387-14
Section IV TROUBLESHOOTING
a.
This section contains troubleshooting information for locating and correct-
ing most of the operating troubles which may develop in the air conditioner unit.
Each malfunction for an individual component, unit, or system is followed by a
list of tests or inspections which will help you to determine corrective actions
to take.
You should perform the tests/inspections and corrective actions in the
order listed.
b.
This Manual cannot list all malfunctions that may occur, nor all tests or
inspections and corrective actions.
If a malfunction is not listed, or is not
corrected by listed corrective actions, notify your supervisor.
c .
Table 4-2 lists the common malfunctions which you may find during the
operation or maintenance of the air conditioner unit or its components.
Before
using this table, be sure you have performed all applicable checks and the tests/
inspections and the corrective actions in the order listed.
HIGH VOLTAGE
is used in 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 operation and hazards of
equipment and who is competent in administering first aid.
When technician is aided by operators, he must warn them
about dangerous areas.
Whenever possible, input power supply to equipment must be
shut off before beginning work.
Take particular care to
ground every capacitor likely to hold a dangerous charge.
When working inside, after power has been turned off, always
ground every part before touching it.
Be careful not to contact high-voltage connections of 115
volts ac input when installing or operating this equipment.
Whenever nature of operation permits, keep one hand away from
equipment to reduce hazard of current flowing through vital
organs of body.
Do not operate equipment without all grilles, guards,
louvers, and covers in place and tightly secured.
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