TM-5-4210-249-13-P-2

TACTICAL FIRE FIGHTING TRUCK (TFF) MODEL M1142

TECHNICAL MANUAL; OPERATOR’S AND FIELD LEVEL MAINTENANCE MANUAL WITH REPAIR PARTS AND SPECIAL TOOLS LIST (INCLUDING DEPOT REPAIR PARTS AND SPECIAL TOOLS); PART 2 OF 4

TM-5-4210-249-13-P-2 - Page 1020 of 1452

TM 5-4210-249-13&P-2

0217-8

DRAFT

0217

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5.

Connect supply line valve (3) to outlet end of component or line.

6.

Connect drain line (4) to inlet end of component or line.

7.

Connect outlet end of drain line (4) to recycling system container (5) or to waste container (6).

8.

Adjust nitrogen bottle regulator/gauge (7) to 200 psi (1,379 kPa).

9.

Open nitrogen bottle control valve (1) and purging control valve (2), then slowly open supply line valve (3).

Check drain line (4) for gas flow.

10. Let nitrogen flow 200 psi (1,379 kPa) for 1 to 2 minutes.

If component or line was very wet, let nitrogen flow

until there is no trace of refrigerant oil or solid bits of dirt or grit flowing from drain line (4).

11. Close nitrogen bottle control valve (1) and purging control valve (2) first, then close supply line valve (3).

12. Disconnect supply line valve (3) and drain line (4).

Tightly cap both ends of component or line.

END OF TASK

TFFT00351