TM 9-4120-402-14
Table 2-1. OPERATOR PREVENTIVE MAINTENANCE CHECKS AND SERVICES
B - Before
D - During
A - After
W - Weekly
M - Monthly
Item To Be
INTERVAL
Equipment Is not
Procedures
Inspected
Ready/Available
ITEM
Check for and have repaired or
If:
NO.
adjusted as necessary
B
D
A
W MI
7
Control Panel
Check for obvious damage and missing
Control panel
knobs.
damaged.
Check for proper operation.
Unit not operating
properly.
8
Refrigerant Sight
After 15 minutes of operation in maximum
Bubbles, milky
Glass
cooling, check for bubbles or milky flow
flow, or yellow
indicating low refrigerant charge. Check
color is observed.
center indicator for yellow color which
indicates presence of moisture.
2-9