Aha! So THAT'S how a receiver it looks on the inside!.. These cut out components really add value to your videos! Makes it more interesting and easier to understand how the components work. Thank you once again for your awesome videos. More power to your channel.
I've installed a lot of freezer rooms and cold rooms with out a reciever. No need for them (not all ways)- nice clear sight glass and no problems with pump down.
That belongs to Lake Tech college in Eustis Florida. Courtesy of Bryan Orr. Here is the another view of it ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-kXRASGrst8o.html
@@love2hvac Thats fantastic, thank you. Can you tell me a little about that low side float valve? Ive never seen one of those before and dont really understand how it works.
So, the king valve is in the back sitting position while the system is running. And to inject the refrigerant and also detect the system pressure, I have to make it mid sitting. After the injection was done, the king valve should be in the back sitting position, then disconnect the charing hose? Is my interpretation correct?
Some call it a heat exchanger, others a subcooler. It dosen't increase capacity but transfers energy from one side to another. There is arguments on both sides. I can discuss some of the ideas but it really gets into engineering. Too much to type out .
OK I understand, so if the low side is brazed to high side to transfer heat as you say, it would be very critical when measuring for subcooling you make sure you take temp before this point where the 2 lines are brazed together other wise you would not get true subcooling ?
Ty,actually how liquid refrigerent is pumped from large receiver to expansion device as size of tube inside through which liquid flow to expansion device is very small compared to receiver area...is it because of capillarity? Or due to high pressure due to compression.
High pressure if compression pushes into the receiver, that pressure pushes against the liquid, the liquid is pushed threw the liquid line to the metering device. The 3/8 line is plenty big to handle the liquid. It's usually foot till 7.5 ton
Question… if you get a burn out on a compressor (system tested positive for acid) do you recommend replacing the evap due to acid in the system? Also, do you recommend using a Rx-11 flush on the lines set once the evap and the coMpressor has been removed. Last question… can the Rx-11 flush clean out the receiver appropriately or do you suggest changing out the receiver too. Thanks.
Great questions. Your best bet is an oversized liquid line filter drier and suction line drier specifically for acid cleanup. You will have to return every 72 hrs until it's cleaned. If you where replacing the systems I would recommend a lien set cleaner that shoots a pig through similar to hilmors set. I would not recommend Rx-11 especially in the evaporator, or receiver, because it is very difficult to remove the product. That can be more of an issue than the acid. Some manufacturers have bulletins especially against the use of the product. If you have a suction accumulator it should be replaced with the compressor. There is a screen inside that clogs up. A liquid receivers is not required to be replaced as the filter drier is after it allowing protection. There is also a product called acid scavenger. However I recently learned it can also cause other issues because of how it chemically reacts.
Does the refrigerant sit on top of the oil or the other way around? If the oil sits on top of the refrigerant, the oil would never find it's way back to the compressor if there's always refrigerant in the LL receiver.
When dealing with liquid receivers on walkin coolers/freezers can I take the temperature at liquid line n b4 receiver to get a subcooling temperature? I hear guys say u can't take subcooling with receiver but dick wirz has a great book commercial refrigeration for ac techs n his diagrams show temp probes at condenser outlet n b4 receiver. So I'm curious why I hear u can't or shouldn't take subcooling temperature with receiver in system.
hvacrschool.com/subcool_receiver/ I think this explains it best. Dick Wirz is a great guy. Subcooling with a receiver can easily lead to a flooded receiver. Check out the article, and I will look for Mr Wirz example your talking about.
@@love2hvac chapter 7 troubleshooting. Basically shows diagrams of wer to put temp probes for subcooling reading. No mention of why not to do this. Thanks ty appreciate ur feedback. Thanks 👍
