Woops allowed air in the system

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digeratimvp
Posts: 1
Joined: Tue Aug 07, 2018 7:47 pm

Woops allowed air in the system

Postby digeratimvp » Tue Aug 07, 2018 8:01 pm

Checking things and I had to add a little, and I forgot to purge my charge hose. I always purge but forgot one time.
Things seem to be ok, and I may be just too OCD about things, but how bad of a screw up is this?

Also I think I read once about how to NOT lose refrigerant in the hoses when just checking things.
It went like this and I may have gotten it off this forum.

To prevent refrigerant loss, this is what you need to do:
1.) Shut off car (safety)
2.) block the center port on manifold with a cap.
3.) CLOSE the valve on car end of high side. Disconnect from car.
4.) Star the car and A/C.
5.) Open both high and low valve on the manifold. This will flush the refrigerant trapped in high side hose back into the system and since the low side is the coldest part of the entire loop, liquid refrigerant will not become trapped in service hoses.
6.) Turn off the car, quickly shut off the car side valve and remove the low side connection. You will lose approximately 120cm^3 of gaseous refrigerant at 50psi or so from the system which amounts to 0.1 to 0.2oz by weight, which is negligible.

Question is....would I be introducing air into the system do this?
The hoses have some air in the lines when you connect them, that does not get to escape, so I feel like this procedure would be pulling that air inside the system.

Should I just not do that and let some waste just be waste?
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Cusser
Posts: 371
Joined: Sun Apr 24, 2016 6:29 am

Re: Woops allowed air in the system

Postby Cusser » Tue Aug 07, 2018 10:15 pm

digeratimvp wrote:Checking things and I had to add a little, and I forgot to purge my charge hose. I always purge but forgot one time.
Things seem to be ok, and I may be just too OCD about things, but how bad of a screw up is this?


I say if cooling performance is acceptable, then don't worry about it, leave it be.

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