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-   -   Recharge refrigerant (R134) (https://www.contractortalk.com/f6/recharge-refrigerant-r134-355569/)

flashheatingand 08-20-2017 05:44 PM

Quote:

Originally Posted by randyle2015 (Post 6210641)
That's very interesting...if the weight is off that system is required then it won't cool even though it's not over charge? I don't have a right equipment to weight it. I was thinking the other components could be failed hence the system won't cooling...


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Harbor Freight has a postage scale that works pretty good. About thirty dollars. They have less expensive models, for the small cans like at the auto parts stores.

randyle2015 08-20-2017 07:20 PM

I noticed the low side indicted the same psi -20 ( was 3 psi) whether the refrigerator power on or not. I'm hoping the compressor still working as I just replaced it with a brand new one. Not sure why the low side gauge doesn't Change....I did vacuum for half an hour last night.


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SuperiorHIP 08-20-2017 10:11 PM

Quote:

Originally Posted by randyle2015 (Post 6210641)
That's very interesting...if the weight is off that system is required then it won't cool even though it's not over charge? I don't have a right equipment to weight it. I was thinking the other components could be failed hence the system won't cooling...


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The issue with my truck was that when I charged to correct pressure the head pressure would run too high. I figured there was a blockage so I flushed the system and replaced the orifice tube and the results were the same. The weighted charge gives a bit of a low suction side but the head pressure stays in check.

I used my wife's food scale to weigh it in. The drum I had only had around 13 pounds in it and the food scale had a max capacity of 15lbs so it worked out.


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