TB-9-2510-251-13

TECHNICAL BULLETIN

OPERATOR AND FIELD MAINTENANCE; INSTALLATION MANUAL (INCLUDING REPAIR PARTS LIST); FOR ADD-ON-ARMOR (AoA) AIR CONDITIONING

AUGUST 2007

TB-9-2510-251-13 - Page 273 of 624

TB 9-2510-251-13

Table 3-1.

Operator Troubleshooting

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

AIR CONDITIONER SYSTEM

1.

AIR CONDITIONER SYSTEM DOES NOT WORK

Step 1.

Is unit switch in ON position?

If no,

switch unit to ON.

If yes, go to step 2.

Step 2.

Are batteries charged?

If no,

charge batteries in accordance with TM 9-2320-280.

If yes, notify unit maintenance.

2.

AIR CONDITIONER UNIT STOPS COOLING

Step 1.

Is the refrigerant charge low in the system?

(sight glass on dryer is clear or shows oil streaks)

If no, go to step 2.

If yes, notify unit maintenance.

Step 2.

Is there air and/or moisture in the system?

(sight glass is clear or shows some bubbles)

If no,

go to step 3.

If yes, notify unit maintenance.

Step 3.

Are refrigerant hoses kinked or restricted?

Are there wet or cold spots on the

hoses?

If no,

go to step 4.

If yes, notify unit maintenance.

Step 4.

Is evaporator low pressure switch connected to one white and one brown wire?

If no,

connect one white and one brown wire to evaporator low pressure switch.

If yes, go to step 5.

Step 5.

Is there excessive noise at the compressor?

If no,

go to step 6.

If yes, notify unit maintenance.

Step 6.

Is the system overcharging?

(sight glass has bubbles)

If no,

notify unit maintenance.

If yes, notify unit maintenance.

3-7/(3-8 Blank)