Hello! I have a friend that works for Trane, and he works on big chillers. I find it very interesting. How long does it take you to pressurize a chiller like that? Do you have to stand and watch it the whole time? I’m just curious about how you techs do your job behind the scenes. It’s really interesting!
hi thank you for the video. Actually i got a question: my chiller has gas leakage at the condenser coil and after welding, i check by spraying some soap water on the welding area and i can't see any bubbles appear. Unfortunately, i heard some hissing sound at the welding area but why the bubbles are not showing when soap water was sprayed on it? Is it because my soap water is too dilute? danke :)
Hi danke, yes that could be the reason. If the opening is very minor, then soap test could not detect unless you applied bery well. I advise next time to pressurise nitrogen at 150 psi to verify no leak at all before filling the refrigerant.
thank you for the reply. is there any faster way to test the leakage? Because if i pressurise the nitrogen gas, i have to hold pressure for one night then the pressure gauge will only shows a difference if there is a leakage.
I have encountered a problem regarding the pressure drop of compressor at low circuit of my chiller unit. The scenario is described as below: My chiller has 3 unit of scroll compressor, when the first compressor is running, the the low circuit pressure shown 4.5 bar and when second compressor cut-in, the low circuit pressure starts to drop to 3.5 and when the last compressor cut-in, the pressure drop again to 2.5 and the system will alarmed. Then the system will automatically cut-off both second and third compressor and the low circuit pressure will again increase to 4.5 bar again. After few minutes, this happened again and again. I have struggling to think of the causes of this problem. Is it because of there is a leakage of my circuit or the expansion valve has malfunction? Or do you have any idea about this? Thank you so much.
