Refrigerant Containment Switch

The refrigerant containment switch is used to interrupt A/C compressor operation in the event of high system discharge pressures.

• The refrigerant containment switch is mounted on a Schrader valve-type fitting on the high pressure side of the compressor manifold and tube assembly.
• A valve depressor, located inside the threaded end of the refrigerant containment switch, presses on the Schrader valve stem.
• This allows the refrigerant containment switch to monitor the A/C compressor discharge pressure.
• When the A/C compressor discharge pressure rises, the switch contacts open, disengaging the A/C compressor. When the pressure drops, the contacts close to allow operation of the A/C compressor.
• It is not necessary to discharge the refrigerant system to remove the refrigerant containment switch.