Manifold Gauge Set Connection

R-134a High Side Quick Disconnect:

R-134a Low Side Quick Disconnect:

Special Tools


WARNING:
^ R-134A IS CLASSIFIED AS A SAFE REFRIGERANT, BUT MISUSE CAN MAKE IT DANGEROUS. THE FOLLOWING PRECAUTIONS MUST BE OBSERVED.
^ ALWAYS WEAR SAFETY GOGGLES WHEN REPAIRING AN AIR CONDITIONING SYSTEM.
^ AVOID CONTACT WITH LIQUID REFRIGERANT R-134A. R-134A VAPORIZES AT APPROXIMATELY -25°C (-20°F) UNDER ATMOSPHERIC PRESSURE AND IT WILL FREEZE SKIN TISSUE.
^ NEVER ALLOW REFRIGERANT R-134A GAS TO ESCAPE IN QUANTITY IN AN OCCUPIED SPACE. R-134A IS NON-TOXIC, BUT IT WILL NOT FURNISH THE OXYGEN NEEDED TO SUPPORT LIFE.
^ NEVER USE A TORCH IN AN ATMOSPHERE CONTAINING R-134A GAS. R-134A IS NON-TOXIC AT ALL NORMAL CONDITIONS, BUT WHEN IT IS EXPOSED TO HIGH TEMPERATURES, SUCH AS A TORCH FLAME, IT DECOMPOSES. ONE OF THE PRODUCTS OF THE CHEMICAL BREAKDOWN IS A PHOSGENE GAS, WHICH IS HIGHLY TOXIC.
^ DO NOT ALLOW ANY PORTION OF THE CHARGED AIR CONDITIONING SYSTEM TO BECOME TOO HOT. THE PRESSURE IN AN AIR CONDITIONING SYSTEM RISES AS THE TEMPERATURE RISES AND TEMPERATURES OF APPROXIMATELY 85°C (200°F) CAN BE DANGEROUS.

CAUTION: The A/C refrigerant of all vehicles must be identified and analyzed prior to refrigerant recovery. Failure to due so can contaminate the shop bulk refrigerant and other vehicles.







1. Turn both valves on the R-134a Manifold Gauge Set all the way to the left to close the low- and high-pressure hoses to the center manifold and center hose.







2. Remove the A/C charging valve caps from the low- and high-pressure service gauge port valves.







3. Connect the low-pressure hose and an R-134a Low Side Quick Disconnect to the low-pressure service gauge port valve.







4. Connect the high-pressure hose and an R-134a High Side Quick Disconnect to the high-pressure service port valve.







5. Connect the (A) center hose to the (B) vacuum pump or the (C) R-134a tank.