How to perform advance pressure calibration?

– Advanced Calibration

    1. Plug in thermocouple into SLT port.
    2. Calibrate Thermocouple to Ice water 32F.
    3. Tape thermocouple to side of refrigerant tank that has been sitting at a constant temperature for 24-48 hours.
    4. Put a brass cap on SLT and another one on LLT and open up both valves.
    5. Hook up refrigerant tank to manifold and open the tank. (Ensure that the Vac valve is closed on manifold before opening refrigerant tank. 4 port manifold only.)
    6. Open refrigerant tank
    7. Select the type of refrigerant being used for this on the manifold.
    8. Open up the Ref port on manifold (4 port manifold only)
    9. Both high and low pressures should read the same.
    10. Press “Test Cal” button.

Both pressure sensors should read “GOOD”