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Post by yachtsmanwilly on Sept 4, 2020 18:20:35 GMT -5
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Post by Avenger on Sept 5, 2020 7:14:29 GMT -5
Just top them off. I got all the gear, and have had it for years. I went fancy when I needed to expense some tool-toys. Appion Ion bluetooth gauges....lololol. You want a trick? Top it off with charge until you feel cold coming back to compressor in the pipe. And maybe a little bit of cold at the bottom of the compressor. If it's leaking, you can add a bit extra. The A/C unit on this ship is being a pain in the ASS. PLC controlled electric TXV valve fucking koreans didn't program right and I don't have access to the all the parameters. A simple old school TXV and low pressure cut-out would've worked fine. HVAC isn't that complicated...don't be scared of it. Ask questions and I can explain. If it leaks out, don't worry about vacuum.....it self purges the contaminates. LOLOLOL Also, ditch the china shit and get a decent set of gauges that does 410a. Probably 150-200 can get you flying. Yellow jacket, etc. AMazon, or a discount tool site. The unit I just charged took two years to run low enough on refrigerant to stop working, and it's been sitting for at least two more years and still had enough refrigerant to ice up. If I have to drop a couple of ounces in it every few years that's what I'm going to do. These systems are really tiny. The one I just did holds 7.76 oz of 410a. And I bought a 25 lb container. It just didn't make economic sense to buy a smaller one. But I think it's going to last me a while. BTW, the Chinese gauges are calibrated for 410A, 134A and R22. That's why I had to return the ones calibrated in °C. Because I need to know the saturated temp and it's just easier to look at the gauge than to look at the gauge and the press/temp table, then look at the wet bulb, then the dry bulb, then the superheat table, then the suction pipe temperature and then do the math. There's already too much math. If this keeps going well I might still make the investment in a Yellowjacket manifold set. But so far the Cheapy Chiney Kaka ones are working. One thing I really like about them is they come in a molded case that holds all the hoses and accessories. Since I expect to use these things only every few years it's nice to have a way to store them. The one with the locked compressor is the one I'd need to pull vacuum on if I decide to replace the compressor. That's not an economically sensible thing to do, but at some point I may try it just for the experience. Then I can practice my brazing and/or soldering skills. If I have to have the system empty I'd actually solder in proper service ports on that one instead of using the piercing valves. It would also help with purging. I was going to use the argon/CO2 gas from the welder instead of Nitrogen, just because I already have it and inert gas is inert gas. Now if I could just find a source for R22 I could probably get the other unit on the boat working too.
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