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Figure 6-1. Discharging and purging refrigerant system
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TM-5-4120-361-14 Air Conditioner Vertical Compact 18 000 BTU/HR 208 Volts 3 Phase 50/60 Hz (Model 18K 208 3 60) Manual
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Figure  6-2.  Charging  refrigerant  system  (Sheet  2  of  2)
TM 5-4120-361-14 NOTE: NOTE: STEP  1. STEP  2. STEP 3. STEPS 1,2,3 AND 4 APPLY ONLY TO A COMPLETELY EVACUATED SYSTEM, A FULLY CHARGED SYSTEM CON- TAINS 11.5 ± .5 POUNDS (5.23 ± .23 KG) OF REFRIGERANT 22. TO ADD REFRIGERANT TO AN INCOMPLETELY CHARGED SYSTEM, REFER TO STEP 5. WHENEVER  AVAILABLE,  USE  RECYCLED  REFRIGERANT FOR CHARGING THE REFRIGERATION SYSTEM. REMOVE SERVICE VALVE ACCESS COVER. REMOVE VALVE CAPS AND LOOSELY CONNECT CHARGING MANI- FOLD SERVICE LINES TO AIR CONDITIONER CHARGING VALVES. ATTACH LINE FROM REFRIGERANT DRUM TO MANIFOLD. OPEN REFRIGERANT DRUM VALVE AND MANIFOLD VALVES AND PURGE AIR BOTH FROM MANIFOLD AND SERVICE  LINES.  TIGHTEN  SERVICE  LINE  CONNECTIONS AT CHARGING VALVES AND CLOSE LOW SIDE VALVE ON CHARGING  MANIFOLD. POSITION REFRIGERANT DRUM UPSIDE DOWN ON A SCALE. OPEN AIR CONDITIONER HIGH PRESSURE CHARGING VALVE AND CHARGE SYSTEM UNTIL SCALE INDICATES A FULL CHARGE, THEN CLOSE BOTH HIGH PRESSURE  CHARGING  VALVE  AND  DRUM  VALVE.  DIS- CONNECT  CHARGING  LINES  UNLESS.  DUE  TO  PRESSURE EQUALIZATION IN DRUM AND AIR CONDITIONER SYS- TEM, A FULL CHARGE IS NOT MEASURED. THEN PRO- CEED TO STEP 4. Figure 6-2. Charging refrigerant system (Sheet 1 of 2) 6-4 Change 4

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