TB-9-2320-279-13-1

TECHNICAL BULLETIN; AIR CONDITIONING SYSTEM

OPERATOR’S, UNIT AND DIRECT SUPPORT MAINTENANCE MANUAL, INSTALLATION INSTRUCTIONS, AND REPAIR PARTS AND SPECIAL TOOLS LISTS

DECEMBER 2005

TB-9-2320-279-13-1 - Page 381 of 524

TB 9-2320-279-13-1

0050-15

AC SYSTEM REFRIGERANT (R-134a) MAINTENANCE - Continued

DRAFT

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10. Select CHARGE and press ENTER on LCD screen (16).

CAUTION

Use care not to overcharge AC system.

The AC system is fully charged when there

is 3 lbs. (1.4 kg) of refrigerant in AC system.

Failure to comply may result in

damage to compressor.

11. Turn panel high side valve (17) to 9 o’clock position, then press START.

NOTE

A slow charge condition may occur due to a pressure equalization between the service

station and vehicle AC system.

12. Monitor the charge weight and turn panel high side valve (17) to 12 o’clock position after 3 lbs. (1.4 kg) of

refrigerant has entered AC system.

WARNING

Never operate vehicle AC system with the panel high side valve in 9 o’clock

position.

NOTE

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Perform Steps 13 through 19 if a slow charge condition occurs.

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Proceed to Step 20 if a slow charge condition did not occur.

13. Ensure panel low side valve (18) and high side valve (17) are in 12 o’clock position.

14. Start engine (TM 9-2320-279-10).

15. Turn AC system ON (WP 0004).

HEMAC198