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TM 9-4120-389-14
TABLE 4-1. UNIT QUARTERLY PREVENTIVE MAINTENANCE
CHECKS AND SERVICES (PMCS) - (cont.)
Item
Item To Be
No.
Inspected/Services
Procedures
15
Pressure Switches
a.
Start unit in COOL mode.
(S4) and (S5)
b.
Test by depressing high pressure switch (S4)
button. Compressor must stop operating.
c.
Repeat step a and b to test pressure switch
(S5).
d.
If either switch fails to stop compressor,
contact Direct Support Maintenance.
4-32
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