Figure 4-4. Evacuating the refrigerant system

TM 5-4120-356-14

EVACUATING THE REFRIGERANT SYSTEM

1. MAKE SURE THAT THE CAP NUTS ON THE SERVICE VALVES ARE TIGHT.

2. CONNECT A VACUUM PUMP TO THE CENTER CONNECTOR OF THE MANIFOLD ASSEMBLY .

3. MAKE SURE ALL VALVES ARE CLOSED.

4. REMOVE CAP FROM SUCTION PRESSURE SERVICE VALVE.

5. CONNECT LINE FROM SUCTION PRESSURE SIDE OF MANIFOLD ASSEMBLY TO SUCTION PRESSURE SERVICE VALVE.

NOTE

DO NOT TURN CAP NUT WHEN OPENING

SUCTION PRESSURE SERVICE VALVE.

6. OPEN SUCTION PRESSURE SERVICE VALVE AND SUCTION PRESSURE VALVE STEM.

START VACUUM PUMP AND EVACUATE REFRIGERANT SYSTEM TO 100 MICRONS.

8. CLOSE SUCTION PRESSURE SERVICE VALVE AND SUCTION PRESSURE VALVE. STEM.

TS54120-356-14/44

REFER TO PARAGRAPH 4-10 AND CHARGE THE SYSTEM WITH REFRIGERANT.

F i g u r e 4-4. Evacuating the refrigerant system