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Topic: Frigi-Cool Dash A/C - Pressure Switch? (Read 420 times) previous topic - next topic

Frigi-Cool Dash A/C - Pressure Switch?

Hi, I'm Colin.  Brand new here, and new owner of a '91 Grand Villa Cat 3208 Pusher UNI (Dinette floor plan).

I've just sprung a small leak in what I believe is the Freon Pressure Switch in the Frigi-Cool dash A/c unit.
Is there anywhere I can find a replacement or substitute part?  Am I in the ballpark with identifying the right part?

 Thanks!

Re: Frigi-Cool Dash A/C - Pressure Switch?

Reply #1
See if there is a brand or part number on the part,most pressure switches can be removed without losing the freon,make sure that is your case,not sure on your last question but if that's the part that's leaking you have it pinpointed unless you just need to tighten it up to stop the leak.
96 U270 BUILD 4810
85 380SL
Drummonds TN.

Re: Frigi-Cool Dash A/C - Pressure Switch?

Reply #2
That would be a standard high pressure switch for R-12. Your system might have been converted to r134a. You are going to lose the refrigerant when you replace the switch so you will be putting r134a back in it as r12 is way too expensive if you can find it. Your system is going to have to be charged by temperature as your system isn't designed for the higher pressures of r134a. Take the switch to any auto a/c supply house and they will have a switch that will work. Then you are going to have to find an auto a/c service that is willing to work on a motorhome.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: Frigi-Cool Dash A/C - Pressure Switch?

Reply #3
The R134a won't move as much heat as the R12 did but as craneman said, R12 is getting pricey.

That being said a direct conversion from R12 to R134a involves flushing the system to remove the old lubricating oil, changing the o-rings in any connections, replacing the refrigerant dryer and compressor.  While you're in there that leaky high pressure switch.  The compressor needs to be replaced again because of seal incompatibility problems.  Then after removing all of the air, add a measured amount of the correct lubricant, and R134a.
1992 Foretravel Grand Villa
U225 SBID Build No. 4134
1986 Rockwood Driftwood
1968 S.I.A.T.A. Spring
1962 Studebaker Lark
1986 Honda VF700C
1983 Honda VF750C
Charlie, the Dog was broken out of jail 24 Oct 2023
N1RPN
AA1OH (H)e who must be obeyed.

Re: Frigi-Cool Dash A/C - Pressure Switch?

Reply #4
You can use Ester oil and not have the o ring or compressor problem. A good A/C shop will understand this.

Understanding the Differences Between A/C Compressor Oils – FJC Inc.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: Frigi-Cool Dash A/C - Pressure Switch?

Reply #5
You can use Ester oil and not have the o ring or compressor problem. A good A/C shop will understand this.

Understanding the Differences Between A/C Compressor Oils – FJC Inc.

I've never liked the "works with both" solution.  For me it's either or, not maybe.
1992 Foretravel Grand Villa
U225 SBID Build No. 4134
1986 Rockwood Driftwood
1968 S.I.A.T.A. Spring
1962 Studebaker Lark
1986 Honda VF700C
1983 Honda VF750C
Charlie, the Dog was broken out of jail 24 Oct 2023
N1RPN
AA1OH (H)e who must be obeyed.

Re: Frigi-Cool Dash A/C - Pressure Switch?

Reply #6
That would be a standard high pressure switch for R-12. Your system might have been converted to r134a. You are going to lose the refrigerant when you replace the switch
No you will not there is a Schrader valve the switch opens.  You can just unscrew it and replace.
91 GV U300 Unihome 40' Build 3811
6V92TA Detroit

Re: Frigi-Cool Dash A/C - Pressure Switch?

Reply #7
That would be a standard high pressure switch for R-12. Your system might have been converted to r134a. You are going to lose the refrigerant when you replace the switch
No you will not there is a Schrader valve the switch opens.  You can just unscrew it and replace.
Nice of Foretravel to configure it that way. Most of the vehicles I worked on weren't set up that way.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean