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 300 of 624

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TB 9-2510-251-13

4-14

Air Conditioning System Servicing (Cont’d)

c. Charge Air Conditioning System

CAUTION

•

Never add more than the recommended amount of refrigerant.

Failure to

comply could result in damage to equipment.

•

Ensure all electrical connectors are properly fastened.

Failure to comply could

result in damage to equipment.

•

Ensure all hoses are tightened and secured away from hot or moving parts.

Failure to comply could result in damage to equipment.

NOTE

•

Steps 1 through 13 apply only to a completely evacuated system.

To

add additional refrigerant to a charged system, refer to Steps 14

through 17.

•

Observe sight glass on dryer bottle.

System is charged when sight

glass fills with bubbles and then clears.

1)

Connect the charging hose from the gauge set to the refrigerant tank dispensing valve.

2)

Invert refrigerant tank on a scale.

3)

Open the refrigerant tank dispensing valve.

4)

Open low side (RED) service valve on manifold.

5)

Add refrigerant until sight glass clears, system and refrigerant tank pressures have

equalized, or 4.8 pounds of refrigerant have entered the system.