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Page Title: Figure 6-13 (1). Pressure testing and evacuating refrigerant system
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TM 5-4120-270-15 Figure 6-13 (1).  Pressure testing and evacuating refrigerant system STEP 2. CONNECT    HOSE    FROM    REFRIGERANT CHARGING HOOKUP LOOSELY TO SUCTION  LINE  SERVICE  VALVE.    OPEN REFRIGERANT   DRUM   SHUTOFF   VALVE SLIGHTLY   TO   PURGE   HOSE.      TIGHTEN CONNECTJON AT SERVICE VALVE. OPEN DRUM SHUTOFF VALVE AND OPEN SUCTION LINE SERVICE VALVE. NOTE: REFRIGERANT DRUM MUST BE IN UPRIGHT    POSITION    TO    ALLOW    ONLY GASEOUS REFRIGERANT TO ENTER SYSTEM. STEP 3. CLOSE     THE     DRUM     SHUTOFF     VALVE WHEN THE DISCHARGE LINE PRESSURE GAGE REACHES 10 PSIG. CLOSE SUCTION     LINE     SERVICE     VALVE     AND DISCONNECT    CHARGING    HOSE    FROM VALVE. STEP 4. CONNECT HOSE FROM PRESSURE TESTING HOOKUP LOOSELY TO SUCTION  LINE  SERVICE  VALVE.    OPEN NITROGEN DRUM SHUTOFF VALVE SLIGHTLY   TO   PURGE   HOSE.      TIGHTEN CONNECTION AT SUCTION LINE SERVICE VALVE. OPEN SHUTOFF VALVE     AND     SUCTION     LINE     SERVICE VALVE.    BUILD  UP  SYSTEM  PRESSURE UNTIL DISCHARGE LINE PRESSURE REACHES   150   PSIG.      CLOSE   SUCTION LINE    SERVICE    VALVE    AND    SHUTOFF VALVE.    DISCONNECT  CHARGING  HOSE FROM   SUCTION   LINE   SERVICE   VALVE. CLOSE DISCHARGE LINE SERVICE VALVE AND REMOVE GAGE. STEP 5. TEST FOR LEAKS (PAR. 6-15). DISCHARGE THE REFRIGERANT SYSTEM (PAR.  6-16). ME 4120-270- 15/6-13() Figure 6-13 (2).—Continued.. 6-17

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