explorer a/c pressure switch
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explorer a/c pressure switch
I have a bad a/c pressure switch and was wondering if anyone knows whether or not I have to evacuate the r-134a before replacing? It is the switch on the backside of the compressor. Thanks in advance.
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From the service manual:
The A/C pressure cut-off switch is used to interrupt A/C compressor operation in the event of high system discharge pressures.
The A/C pressure cut-off switch is mounted on a Schrader valve-type fitting on the high pressure side of the A/C manifold and tube.
A valve depressor, located inside the threaded end of the A/C pressure cut-off switch, presses on the Schrader valve stem.
This allows the A/C pressure cut-off switch to monitor the compressor discharge pressure.
When the compressor discharge pressure rises to approximately 2896 kPa (420 psi), the switch contacts open, disengaging the A/C compressor,
When the pressure drops to approximately 1724 kPa (250 psi), the contacts close to allow operation of the A/C compressor.
It is not necessary to discharge the refrigerant system to remove the A/C pressure cut-off switch.
The A/C pressure cut-off switch is used to interrupt A/C compressor operation in the event of high system discharge pressures.
The A/C pressure cut-off switch is mounted on a Schrader valve-type fitting on the high pressure side of the A/C manifold and tube.
A valve depressor, located inside the threaded end of the A/C pressure cut-off switch, presses on the Schrader valve stem.
This allows the A/C pressure cut-off switch to monitor the compressor discharge pressure.
When the compressor discharge pressure rises to approximately 2896 kPa (420 psi), the switch contacts open, disengaging the A/C compressor,
When the pressure drops to approximately 1724 kPa (250 psi), the contacts close to allow operation of the A/C compressor.
It is not necessary to discharge the refrigerant system to remove the A/C pressure cut-off switch.
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