Frustratingly inconsistent AC system

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#11

07-15-2019 | 08:52 PM

Ben Matheson

Winching

Joined: Feb 2018

Posts: 568

Likes: 43

From: Orlando FL

Quote:

Originally Posted by Llamasayswhat

How did you manage all that, but you're unsure on weight? Any Automotive AC machine is going to do all of that on an auto cycle with no questions asked.

Gauges and vacuum pumps are cheap and available for free use from auto parts stores. Getting a precise weight into the system is very difficult when trying to weigh little cans of r134.

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#12

07-15-2019 | 08:53 PM

Ben Matheson

Winching

Joined: Feb 2018

Posts: 568

Likes: 43

From: Orlando FL

Quote:

Originally Posted by Jason Feuerstein

I had to compensate for refrigerant left in the hoses. The RAVE manual has a calculation for that, but it's not perfectly precise; hence why there's some leeway in the amount of refrigerant used.

What did you end up with for final high and low pressures and at what temp outside

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#13

07-15-2019 | 08:56 PM

redwhitekat

TReK

Joined: May 2011

Posts: 2,758

Likes: 394

From: kitchener, canada

You need to pressure test at least 150 psi for a good hour
than if it holds you evacuate to at least 4-500 microns
than you get a weigh scale get your jug of 134 a and weigh in charge

done

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