Refrigerant charge amount, engine air
I have a 1987 Gulfstream Class A with a 1986 Ford 460 driveline. I want to connect a recycler and evacuate the system, vacuum, and then recharge with R-12. My question is, how do I find out the recha...
Forum Discussion
Matt_Colie wrote:
Atsrmf,
I don't know where Indio is, but if it is not in California, look up a refrigerant called HC-12a. It is a hydrocarbon based that is completely compatible with all things R-12. It is almost three times better then R-134a at heat pumping and is completely non-ozone depleting.
But, (like HC-134a) it is flammable. There is an advantage there in that if R-134a burns, the by-product is extremely toxic.
HC-12a is a combination of pure (not cooking grade) propane and iso-butane (iso in this case means the molecule is a different arrangement) I have used this to great success.
If you are afraid to have several pounds of flammable material there, then think about the amount you already have in the LP tank and fuel tanks.
Matt
Indio is in the area of Palm Springs California.
In this case, if you can find Freon 12, you can actually use the sight glass in the dryer to charge the system. You just charge until the bubbles are gone. Another way to charge any Dash AC system if to have a digital thermometer inserted at the closest Dash vent to the Evaporator and slowly charge until you flatten out on the downward cooling. Once it plateaus at say 55 degrees and then starts to climb up you have reached saturation point and stop the charge. Doug
