BAC Forum

General Boards => Technical Support => Topic started by: Jeremy Parrett on July 23, 2013, 04:26:39 AM

Title: Dash a/c  fan pressure switch.
Post by: Jeremy Parrett on July 23, 2013, 04:26:39 AM

Does anyone  know what type of   pressure switch  I have on my dash a/c evaporator fan circuit??

Title: Re: Dash a/c  fan pressure switch.
Post by: Tom and Pat Fudale on July 25, 2013, 01:24:46 AM

I Seem to remember it was called a trynary switch and was located just above the gen on the front cap.

Title: Re: Dash a/c  fan pressure switch.
Post by: Jeremy Parrett on July 30, 2013, 09:52:20 PM

Thank you Tom.  You are right.  I have ordered one.   I will update when the system is up and running.

Title: Re: Dash a/c  fan pressure switch.
Post by: Edward Buker on July 30, 2013, 10:37:35 PM

Jeremy,

The good news is most of the time there is a valve like a tire valve below that sensor that gets depressed by the new pressure switch. If you remove it, before you reach the end of the threads hopefully the gas flow will stop and you should not lose much charge. Hopefully that is what your configuration is like.

Later Ed

Title: Re: Dash a/c  fan pressure switch.
Post by: Jeremy Parrett on July 30, 2013, 11:03:00 PM

Hi Ed,
   yup......it is a Schraeder valve   so hopefully we will not loose any R134a refrigerant.   Jeremy