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TABLE 4-1. ORGANIZATIONAL PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) - continued - TM-5-4120-347-140055
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TM-5-4120-347-14 Air Conditioner Horizontal Compact 9 000 BTU/HR 208 Volt 3 Phase 60 Hertz Manual
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TABLE 4-2. TROUBLESHOOTING - TM-5-4120-347-140057
TM5-4120-347-14
Para
Item
Item To Be
Ref.
Procedures
No.
Inspected/Serviced
compressor cylinder. Except in extremely
cold conditions, if input power has been
disconnected for a period of less than four
hours, an equal warm-up period should be
allowed, If the disconnected period has been
more than four hours, a full four hour warm-
up period is necessary.
a.
Be sure the mode selector switch is in the OFF position
and reconnect input power.
b.
Perform functional check of the air conditioner in all
operational modes in accordance with the instructions
c.
Set-up the air conditioner for the desired operational
mode,
d.
Record performance of quarterly PMCS, including all
corrective act ions taken.
NOTE: If the air conditioner has been in operation under unusual conditions, the above PMCS items must
be modified as necessary to meet the further requirements due to the unusual conditions.
Section V.
TROUBLESHOOTING
4-12. USE OF TROUBLESHOOTING TABLE
I
Table 4-2 contains troubleshooting information useful to organizational maintenance technicians in
diagnosing and correcting malfunctions or unsatisfactory operation of the air conditioner.
a. The troubleshooting table lists the. common malfunction symptoms and unsatisfactory performance
characteristics technicians are most likely to encounter; test and inspection steps to be followed to determine
the cause; and the corrective action(s) that should be performed for each possible cause listed.
b. The technician should first find the malfunction symptom or unsatisfactory performance characteristic in
the table which most closely describes the immediate situation; then perform the test and inspections, and
corrective action steps in the order in which they are listed.
c. This manual cannot list all possible situations which may be encountered, nor can it list all test and
inspection, and corrective action steps which may be taken. If a condition is encountered which cannot be
resolved within the capabilities and experience of organizational maintenance personnel, assistance should
be requested from direct support maintenance.

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