TB-9-2510-251-13 HMMWV Operator and Field Maintenance, Installation & Parts Add-On-Armor Air Conditioning Download
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4-24 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.