HOW TO LEAK/PRESSURE TEST A REFRIGERATION SYSTEM USING TESTO 557.

Pressure testing the system with my testo 557 will let you know if there’s a leak within 30 minutes, no matter how small the leak is as you see it reads pressures @ 0.1 increments, with analog gauges you would have to wait up to a day for the needle to move 4 or 5 psi so you can notice really tiny micro leaks
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#557
#testo557

[@Randylazz]

One of my favorite features on the Testo 550
Great demonstration..............😎✌️

[@mrcrux213]

Thus is a good tutorial 👌

[@D2DNYAC]

Thank you for stopping by

[@refrigeracionmedina1534]

buenas tardes si la diferencia es 0,7 positivo se considera perdida

[@daviderquitt1642]

I test got a testo 557 of Facebook ..still learing

[@RiverDavies-c6n]

boiling off the freon in the compressor oil will make psi rise. 5 psi accepted on 24h

[@D2DNYAC]

I appreciate you good information

[@DramaLifeSimulator]

Can you explain to me some details about why pressure drop to -0.6 very fast. My 557 is the same its make me crazy. Sometimes it positive some times - when i charge n2 to do leak test in L type pipe. I try to use soap to find leak in every brazing joints ... its Nothing. but 557 still reading -0.2 in 4min.

[@D2DNYAC]

Good one ☝️! I experience the same thing almost all the time and I IGNORE it unless the drop in pressures is constant with time. That is -0.2 psig in 1 minute , then -0.4 in 2 minutes then -0.6 in 3 minutes and so on

[@DramaLifeSimulator]

@@D2DNYAC Thank you for your answer. sorry for my English

[@TheBlindSwordsman]

Can I do a preasure test with low hose connected only?

[@D2DNYAC]

Yes

[@TheBlindSwordsman]

@@D2DNYAC Thank you for the quick response. I have a Testo 550, I think I can do it with that model. Do I need to use the clamps if I'm only going to do a preasure test with the low preasure side? Thank you in advance.

[@D2DNYAC]

No clamps needed for pressure testing

[@TheBlindSwordsman]

@@D2DNYAC Thank you

[@D2DNYAC]

@zatoichi thanks for stopping by my friend