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Refrigeration

Rotary Matsushita 2v36s225bua

DiegoAlvarez
hace 5 años
hace 5 años
Hello before all! I have a Surrey team (without the evaporator) with a Chinese Matsushita 2v36s225bua motocompressor that according to the label says it is 2600w at maximum power, of a 6.2kw only cold equipment. (on the compressor label it only says R22 50Hz 220-240) I don't have LRA and RLA data. The problem I have is that it costs him to start, and when he measures the Amp he hits me with a peak of almost 35A and he walks (but it costs him, he does not come out of one), but it seems that he stayed stuck at the beginning in cold. once I start it, I stop it and start and it throws me 15A peaks when it starts, walking gives me a consumption of 4 Amp + o-, all this is empty, I mean the compressor alone. I verify the capacitor that is 50 pfu and gives me 51uf with a tester and with another 49uf thing that is fine because it is within + -5%. The winding is good for me. I bought it used and according to the seller had little use haha, but good. What I have not done is let it work for a while to see if it is half hard due to the lack of one or that ... I hope I can throw some tip or something I can not do, thanks.
NG en linea
NG en linea
9.229
hace 5 años
hace 5 años
Hi. The compressors should not have a long time in a vacuum, in addition to not receiving cooling by the gas that enters through the suction, you are also at risk of moisture entering the oil Measuring ranges are acceptable. If you start and put your finger on the compression and notes that are compressing until you can not control the output are good symptoms The capacitor is well in that range. You must try it with load for a definitive conclusion
DiegoAlvarez
hace 5 años

Thanks for the answer, I will do what I read in a post here that measured the pressure up to 300psi and turned off, followed by verifying that it does not go down, that from what I understand gives me the pattern of the internal state, doesn't it?
What worries me that it costs him to start ... does not jump the thermal of 10amp but it shows a voltage drop in the lights ... I don't know what to think. Regards.

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NG en linea
NG en linea
9.229
hace 5 años

Rotary compressors not when tested do not raise the pressure fast like those of pistons, nor maintain it
I agree with you that this drop in tension is not a good symptom. Maybe your mechanical part is in trouble.

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DiegoAlvarez
hace 5 años

I was testing these days and although the first time it starts it seems to cost (the AMP clamp marks a peak of 50AMP), and begins to work "norm." It has very good pressure and suction, what tin me is that then if I turn it off and on it turns on with a peak of 15amp. I made the stupidity of trying to change the oil and as you can imagine, nothing came out only 60mm, until I investigated and I realized that it cannot be removed by overturning the compressor ... but if I saw that what came out is a very viscous oil and heavy compared to the one you buy take out.

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NG en linea
NG en linea
9.229
hace 5 años

A compressor that consumes 10amp is normal for starting up to 50amp.
Turn down the lights maybe the tension in your house is low

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DiegoAlvarez
hace 5 años

Does anyone know if rotary compressors maintain pressure? Why do I do the test and take it to 300psi for ex. And then it starts to go down ... and escapes down. If someone clarifies this to me it would be great, because all the tests I saw were done with the piston MCs. Thank you all !

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NG en linea
NG en linea
9.229
hace 5 años

Rotary compressors do not hold pressure like those of pistons,. Just start them and putting your finger on the high if you can not keep it closed is a sign that is fine.

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DiegoAlvarez
hace 5 años

Thank you for your help, it helped me to understand. He continued with my project.

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