Air Conditioner User Manual

INSTRUCTIO NS MANUA L
OPERATION INSTRUCTIONS
RECO VER AND RECYCLE REFRIGERANT FROM AN AC SYSTEM
1. Be sure that the shut offvalves are offprior to attaching to a vehicle AC system.
2. Attach the machine to the high and low sides of the AC system to be serviced. The R-
134a hoses have SAE approved shut-off valves (quick disconnects). The hoses are
shut off when disconnected from the AC system and are open only when connected
with the knurled knobs turned clockwise.Slide the collar ofthe fitting back and press to
the appropriate fitting.
• Blue hose to the low side ofAC system
• Red hose to the high side ofAC system
3. SetMAIN POWER (k, Figure 3) ON.
4. Open the valves on the service hoses by turning the knurled knob clockwise (Figure
12). This will allow refrigerantto flow to the vehicle.
5. Observe the pressure readings on the low and high side manifold gauges. If the
readings are zero, then repair AC system leak or proceed to vacuum phase.
6. Open the High Side and Low Side valves on the control panel ofthe machine.
7. Press and hold the SEL keyuntil the LED corres ponding to “RECOVERY” lights; then
press GO. At this point the RECOVERY/RECYCLING phase will begin and the
“Recovery” LED will flash.
8. Duri ng the RECOVERY/RECYCLING phase the amount of refrigerant recovered from
the vehicle will be displayed. Upon completion of the recovery phase the machine will
stop and hold three minutes.
9. Duri ng this time the machine automatically discharges the used oil. Itwill be necessary
to monitor this oil dumping to determine the amount of oil that must be added to the
vehicle. When the oil discharge is complete, measure, record and empty the oil
discharge bottle. This amount will be added to the AC system before charging. When
there is no i ncrease in system pressure, the vacuum pump will start and evacuate the
input oil separator inside the VR-6000.
10. If, during this 3-minute time period, the residual refrigerant left in the A/C system
causes the press ure to increase, the m achine will automatically resume recovering the
refrigerant. When this phase is complete the machine will sound and audible alarm,
and swi tch to the REFRIGE RANT A VAILA BLE display.
11. Close the High Side and Low Side panel valves.
12. Setthe MAIN POWER switch OFF.
13. Disconnect the machine if desired. (See DISCONNECTING THE MACHINE FROM A
VEHICLE.)
14. Make necess aryrepairs to the A/C system being serviced.
REMO VING NO N-CONDENSABLE G ASES
As non-condensable gases accumulate in the refrigerant storage tank, excess ive press ure
is created. The most noticeable symptom of excess press ure is a slow down of refrigerant
flow during the recovery proces s. In most cases, you will not notice a reduction in refrigerant
recovery rate until the nominal press ure in the storage tank is 20 psig above the normal
pressure, as listed on the purge chart. Che ck for non-condens able gases after eac h
recovery phase. The table provided below (Figure 13) is used to determine when an excess
ofnon-condensable gases has accumulated in the refrigerantstorage tank.
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