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Page Title: Figure 6-14 (1). Charging refrigerant system
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TM 5-4120-270-15 STEP 6. REMOVE   CAP   FROM   DISCHARGE   SERVICE VALVE.  ATTACH A SUITABLE VACUUM PUMP TO  SUCTION  LINE  SERVICE  VALVE.    AND  A MANOMETER TO THE DISCHARGE LINE SERVICE VALVE. OPEN THE SERVICE VALVES  AND  OPERATE  THE  VACUUM  PUMP UNTIL  THE  MANOMETER  INDICATES  2.6  MM HG.ABS. (MILLIMETERS OF MERCURY, ABSOLUTE), STEP 7 CLOSE  THE  SUCTION  LINE  SERVICE  VALVE AND STOP THE PUMP.  ATTACH HOSE FROM REFRIGERANT    DRUM,    PURGE    AIR    FROM LINE     WITH     REFRIGERANT     AND     SLOWLY BREAK    THE    VACUUM    BY    OPENING     THE SUCTION LINF SERVICE VALVE UNTIL MANOMETER  INDICATES  760  MM  HG.    ABS. CLOSE    SUCTION    SERVICE    VALVE.    NOTE. RISE IN PRESSURE WILL BE INFLUENCED BY AMBIENT TEMPERATURE. MAKE SURE VACUUM IN SYSTEM IS COMPLETELY RELIEVED BEFORE REEVACUATING. STEP 8. REMOVE REFRIGERANT DRUM AND CONNECT VACUUM PUMP TO SUCTION LINE SERVICE  VALVE.    PURGE  AIR  FROM  HOSE, START    PUMP    AND    OPEN    SUCTION    LINE SERVICE    VALVE    OPERA1E    PLUMP    UNTIL MANOMEIER AGAIN READS 2 5 MM HG.ABS. STEP 9. CLOSE  SUCTION  LINE  SERVICE  VALVE  AND ALLOW   UNIT   TO   STAND   UNDER   VACUUM FOR   APPROXIMATELY   12   HOURS.      IF   NO NOTICEABLE   RISE   IN   PRESSURE   OCCURS, THE    SYSTEM    IS    READY    FOR    CHARGING. CLOSE SERVICE VALVES AND REMOVE VACUUM   PUMP   AND   MANOMETER   INSTALL SERVICE VALVE CAPS. ME 4120-270-15/613(3) Figure 6-14 (1).  Charging refrigerant system. Figure 6-13 (3) -Continued. 6-18 TM 5-4120-270-15

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