A/C Installation: Factory Refrigerant for 5m, Adding R410A for 6-7m Pipes, Measurement Accuracy

Jan_Werbinski 29865 34

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#31 18000483 07 Jun 2019 14:22

kkk6969 kkk6969

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Post #31
18000483 07 Jun 2019 14:22

That is, desoldering the compressor (two February), pouring oil, vacuum, replacing the drier filter, flooding with oil, back soldering under nitrogen, daily vacuum, taking the factor and wio?
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#32 18000558 07 Jun 2019 15:28

jack63 jack63

Level 43

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Post #32
18000558 07 Jun 2019 15:28

You forgot the weight and pressure test after soldering. This test may be part of the drying process
During brazing, nitrogen is only supposed to fill the center of the pipe and protect its interior from scale formation. You must not pump the pressure, because you will either not solder or you will solder leaky.
The second one is probably worse. Corrections can be made with solder with at least the same silver content in the solder.
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#33 18001636 08 Jun 2019 10:41

kkk6969 kkk6969

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Post #33
18001636 08 Jun 2019 10:41

Thanks for the info - I skipped that in the description because it was obvious to me
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#34 18005743 10 Jun 2019 23:30

kkk6969 kkk6969

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Post #34
18005743 10 Jun 2019 23:30

Well, I'm stuck. Compressor removed, standing upside down. About 100g of oil flew out and still doesn't want to. I can hear oil sloshing around when I turn the compressor. What to do to push it out? Nitrogen through the battery? can you help me?
#35 18005844 11 Jun 2019 06:19

jack63 jack63

Level 43

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Post #35
18005844 11 Jun 2019 06:19

Rather aside. Through a liquid separator. Backwards.
Need to wave a bit. Patience.
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Topic summary

The discussion revolves around the installation of air conditioning systems, specifically regarding the adequacy of factory refrigerant for pipe lengths exceeding 5 meters. Users express concerns about the accuracy of refrigerant measurement methods employed by installation companies, which often rely on low-resolution scales. The consensus suggests that experienced technicians may compensate for measurement inaccuracies by adjusting the refrigerant charge based on system performance. The conversation also touches on the necessity of proper vacuuming and pressure testing, with some users questioning the legality and safety of using unqualified personnel for installations. Additionally, there are discussions about the implications of refrigerant leaks and the importance of adhering to environmental regulations concerning refrigerant handling.
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