1. A/C SYSTEM SERVICE 1  A/C manifold gauge set  Manifold valves  Hose end valves  Performance test  Pressure diagnosis  Manifold purging and disconnect

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3. THE NATIONAL REFRIGERANT RECYCLING RULE WAS PROPOSED DECEMBER 10,1992 AND AN...THE RECOVERY OR RECOVERY /RECYCLING EQUIPMENT MUS T BE CERTIFIED BY AN APPROVED 3

4. A/C SYSTEM SERVICE  Recovery  Evacuation  Recharging  Leak Check  Freon Quality  Robinair 347788 Demo Robinair 347788 Demo 4

5. REFRIGERANT IDENTIFICATION  Follow equipment manufacturer’s instructions  Do not recover refrigerant with sealers 5 Section 609 Purity Standards (hand out)Refrigerant Purity Standards- handout.docxRefrigerant Purity Standards- handout.docx Identify

6. REFRIGERANT PASS/FAIL MUST BE 98% TO RECYCLE 6

7. A/C SEALANT DETECTOR MODEL  AC Sealant Detection AC Sealant Detection 7

8. REFRIGERANT RECOVERY  Connect recycler to vehicle service ports  Set machine to recover  If recovery equipment does not automatically shut off- recover until system drops into slight vacuum  Shut off valves and observe pressures for 5 minutes  If pressure increases-repeat recovery 8

9. THE FLOW DIAGRAM FOR A RECOVERY/ RECYCLING MACHINE SHOWING THE INTERNAL COMPONENTS AND THE PATH THAT REFRIGERANT TAKES DURING RECOVERY AND RECYCLING. (COURTESY OF ROBINAIR, SPX CORPORATION) 9

10. EVACUATION  Drain and measure system oil recovered in recycler  Evacuate system after leak check has been performed  If system has been exposed to moisture:  Evacuate until:  500 microns  29.2 in.  20-30 mins. minimum  Add amount of oil removed 10

11. RECHARGE  Determine system capacity  Recharge system  If recycler cannot fully charge system (temp or pressure too high):  Shut off both manifold valves  Start engine and turn on A/C max  Open doors/windows  Charge remainder of refrigerant through low side port without allowing pressure to exceed 50 psi  Close both valves and complete performance check  Disconnect hoses from vehicle 11

12. THE BUBBLES IN A SIGHT GLASS WILL DISAPPEAR AT A POINT LOWER THAN THE PROPER CHARGE AMOUNT. HIGH-SIDE PRESSURE WILL INCREASE AT A POINT THAT THE SYSTEM IS ALREADY OVERCHARGED. (COURTESY OF TOYOTA MOTOR SALES USA, INC.) 12

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14. GO TO GOOGLE-TYPE R134 PRESSURE CHART 14

15. ROBINAIR R & R MACHINE.PDF 15