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HVACR318 – Advanced RefrigerationRECOVERY

TRIPLE EVACUATE

CHARGE

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HOOKING UP GAUGES ON SUCTION AND DISCHARGE LINES

USE LOW LOSS

ALL 4 VALVES CLOSED

WHITE

REDBLUE

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HOOKING UP GAUGES ON SUCTION AND LIQUID LINES

USE LOW LOSS

ALL 4 VALVES CLOSED

WHITE

RECEIVER

RED

BLUE

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SETTING UP RECOVERY UNIT

ALL 4 VALVES CLOSED

WHITE

RECEIVER

EXTRA HOSE

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WHEN THESE STEPS ARE COMPLETE … PURGE HOSES AND TURN ON RECOVERY UNIT

WHITE

RECEIVER

EXTRA HOSE

OPENOPEN OPEN

CLOSED

RECOVERY UNIT OFF

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WHITE

RECEIVER

EXTRA HOSE

OPENOPEN OPEN

RECOVERY UNIT ON

SLOWLY OPEN THE FRONT ACCESS HANDLE … KEEP THE RECOVERY UNIT PRESSURE BELOW 50 PSIG AS IT RUNS…RUN UNTIL THE SYSTEM IS EMPTY

RECOVERY UNIT ON

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WHEN THE SYSTEM IS EMPTY…… 1. CLOSE OFF ALL GAUGE HANDLES .. 2. TURN OFF REC UNIT 3. CLOSE OFF CYLINDER VALVE

WHITE

RECEIVER

EXTRA HOSE

CLOSECLOSE CLOSE

CLOSED

RECOVERY UNIT OFF0 PSI0 PSI

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TRIPLE EVACUATE … CONNECT WHITE HOSE TO VACUUM PUMP

WHITE

RECEIVER

CLOSECLOSE

CLOSED

0 PSI0 PSI

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TRIPLE EVACUATE … TURN ON VACUUM PUMP … OPEN THE VACUUM PUMP ACCESS VALVE

WHITE

RECEIVER

CLOSECLOSE

CLOSED

0 PSI0 PSI

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WHITE

RECEIVER

CLOSECLOSE

OPEN

0 PSI0 PSI

OPEN THE FRONT ACCESS GAUGE VALVE

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WHITE

RECEIVER

OPENOPEN

OPEN

30”

OPEN THE SIDE ACCESS GAUGE VALVES … LET RUN UNTIL COMPOUND GAUGE SHOWS DEEP VACUUM

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WHITE

RECEIVER

CLOSECLOSE

OPEN

30”

CLOSE THE SIDE ACCESS GAUGE VALVES … SEE IF VACUUM HOLDS…IF NOT…GO LONGER

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WHITE

RECEIVER

CLOSECLOSE

CLOSE

30”

WHEN IT HOLDS, (CLOSE THE ACCESS VALVE ON THE V-PUMP)..SET UP A CYLINDER TO BREAK THE VACUUM WITH

REFRIGERANT OR NITROGEN

PURGE HOSE

OPEN

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WHITE

RECEIVER

CRACK UNTIL 0 PSI

CRACK UNTIL 0 PSI

0 PSIOPEN

OPEN

0 PSI

ONCE AT 0 PSI ON BOTH GAUGES … EVACUATE AGAIN

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WHITE

RECEIVER

OPENOPEN

OPEN

30”

GET SYSTEM BACK TO A 30” VACUUM

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WHITE

RECEIVER

CLOSECLOSE

CLOSE

30”

WHEN IT HOLDS, (CLOSE THE ACCESS VALVE ON THE V-PUMP)..SET UP A CYLINDER AGAIN TO BREAK THE VACUUM

WITH REFRIGERANT OR NITROGEN

PURGE HOSE

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WHITE

RECEIVER

CRACK UNTIL 0 PSI

CRACK UNTIL 0 PSI

0 PSIOPEN

OPEN

0 PSI

ONCE AT 0 PSI ON BOTH GAUGES … EVACUATE AGAIN

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WHITE

RECEIVER

CLOSECLOSE

CLOSE

30”

GET SYSTEM BACK TO A 500 MICRON VACUUM...(CLOSE OFF ALL VALVES AND V-PUMP HANDLE BEFORE TURNING IT OFF)

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WHITE

RECEIVER

30”

OPEN

CLOSED

CLOSEDCLOSED

PURGE HOSEUPSIDE DOWN

CYLINDER

SETTING UP FOR CHARGING THE SYSTEM

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WHITE

RECEIVER

50 PSI

OPEN

OPEN

CRACK SLOWLYCLOSED

UPSIDE DOWN

CYLINDER

OPEN FRONT ACCESS VALVE ON GAUGES…SLOWLY CRACK THE HIGH SIDE HANDLE SO LIQUID CAN FLOW INTO THE

HIGH SIDE (JUST BREAK THE VACUUM)

50 PSI

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WHITE

RECEIVER

50 PSI

OPEN

OPEN

CLOSED!!!CLOSED

UPSIDE DOWN

CYLINDER

WHEN READY TO TURN ON SYSTEM…BE SURE HIGH SIDE GAUGE HANDLE IS CLOSED … TURN ON SYSTEM

50 PSI

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WHITE

RECEIVER

3 PSI

OPEN

OPEN

CLOSED!!!CLOSED

UPSIDE DOWN

CYLINDER

WHEN READY TO TURN ON SYSTEM…BE SURE HIGH SIDE GAUGE HANDLE IS CLOSED … TURN ON SYSTEM

75 PSI

RUNNING

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WHITE

RECEIVER

OPEN

OPEN

CLOSED!!!CRACK

SLOWLY

UPSIDE DOWN

CYLINDER

SLOWLY CRACK THE LOW SIDE HANDLE …. USING THE AMBIENT TEMP, AMMETER, SUBCOOLING AND / OR

SUPERHEAT….CHECK THE CHARGE AS YOU GO….THAT’S IT

RUNNING