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Tool Talk Discussion Forum

Re: Recharging Refrigerant

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Author  [Modern View]

06-24-2014 05:52:22

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Icing is indeed an indicator of a low charge. If the tag says that R-12 is in the system, it is probably still using R-12. Small critical fill systems like this are generally sealed systems that rarely need service.

BUT... the only SURE way to tell which refrigerant is currently in the system is to have it analyzed. There are analyzers on the market that can tell you which refrigerant (or mixture of them) is present.

Since the capacity is so small, it would be critical to have the right amount in the system for proper function. Recover, vacuum, and recharge with an accurate measurement is the recommended course of action. Then you will know that it has the correct charge in it.

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06-24-2014 07:20:57

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 Re: Recharging Refrigerant in reply to jimg.allentown, 06-24-2014 05:52:22  
Think I'll vacuum it down and recharge with r12. I have a scale, just going to be tricky getting the hose off quick enough!

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06-24-2014 09:17:45

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 Re: Recharging Refrigerant in reply to Steve@Advance, 06-24-2014 07:20:57  
Hello Steve@Advanced

Here is what you do. After you have charged the system, push down on the hose. Then completely unscrew the fitting while pressing down. Tnen a quick removal should minimize the loss of refrigerant,


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06-24-2014 09:45:40

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 Re: Recharging Refrigerant in reply to Guido, 06-24-2014 09:17:45  
Thanks, I'll try that!

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06-24-2014 11:53:16

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 Re: Recharging Refrigerant in reply to Steve@Advance, 06-24-2014 09:45:40  
Quoting Removed, click Modern View to seeI don't do all that dump charge/vacuum /etc. Just add a little refrigerant at a time until the suction pressure is about 35-38 degrees and after a few hours the ice will go away & your charge will be right with the world. Life really is simple sometimes.

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