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Clear sight glass in refrigeration system full#
But why is it OK to dismiss foam in the sight glass of a properly designed 134 system when it was once considered the proper way to charge R-12 systems? Surely the engineers designing the system would not have purposely designed in inefficiencies. A clear sight glass on a running system generally means a full line of liquid (or totally flat, but you would know that already if you have gauges attached). I also understand that blends may tend to bubble occasionally as the refrigerant could tend to momentarily fractionate. I realize when conversions are performed that bubbles might possibly be present as the system is not necessarily optimized for that particular refrigerant, but the system may still possess enough excess cooling capacity to off set any loss due to bubbles. loss of refrigerant, the improper operation of the refrigeration system. I always thought bubbles were an indicator of one of two things, low refrigerant or insufficient condenser capacity under the observed conditions. The liquid refrigerant sightglass is the most misapplied, misunderstood and. Will somebody please explain to me why bubbles should be expected in a system that is using a single component refrigerant? In my mind, a properly designed system should not be expected to have bubbles, as bubbles will not go through a phase change when expanded in the evaporator and therefore will reduce cooling capacity. Everything works, I just want to make sure that everything is ok. I was told by the guy who charged it that it would decrease when driving the car because more air would flow across the condenser. Also I thought the high side pressure was to high. In a system with an expansion valve, a sight glass is usually fitted in the liquid line immediately after the filter drier. I'm just wondering if this is something that I need to worry about. I was under the impression that this should appear clear with only occasional bubbles. My question is concerning the sight glass on the reciever dehydrator, you can see a constant flow of bubbles that speed up with engine rpm. of ester oil into back of compressor, evacuated the system to 26 inches, let vacuum pump run for about 3 hours. I drained the compressor oil, replaced all of the o rings and flushed the system(including the muffler-oops).
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I replaced the reciever dehydrator and the thermal expansion valve. I recently converted my a/c system to 134a.
Clear sight glass in refrigeration system windows#
Year: 1967 Make: Buick Model: gs Engine Size: 400 Refrigerant Type: 134a Ambient Temp: 88 Pressure Low: 40 Pressure High: 280 Country of Origin: United States Fusite uses its brand leading glass-to-metal (GTM) sealing process to create highly compressed seals for hermetic sight glasses used as windows for visual.
![Clear sight glass in refrigeration system](https://kumkoniak.com/16.jpg)