Thank you sir ! Great explanation.

@AirConAcademy

Ай бұрын

I am glad you enjoyed the video. And I'm glad he liked the explanation. I just want to make it easy for you guys to understand things and become better technicians out there. Thank you for watching!

بسیار عالی وکار بردی مهندس دمت گرم

@AirConAcademy

2 жыл бұрын

can you please send in English?

Great class, thanks for the great explanations and teaching us step by step what they're functions are.

THANK YOU. So well presented. It shows that you care. Humble GENIUS.

@AirConAcademy

2 жыл бұрын

Thank you so much! Thank you for your comment and I'm glad you like the video!

Excellent video

@AirConAcademy

3 жыл бұрын

Thank you!!!

Nice short concise

@AirConAcademy

Жыл бұрын

Thank you! I'm very glad you like the video and thank you for watching!

@soleilsoleil8287

Жыл бұрын

@@AirConAcademy i love your lessons simple straightforward brief to the core ...great for learners and those who reassess knowledge please more videos

@AirConAcademy

Жыл бұрын

@@soleilsoleil8287 thank you so much! I appreciate your kind words. Thank you for watching!

Thanks. So greatly appreciate it

gracias por compartir una muy buena explicación de las válvulas de expansión

@AirConAcademy

4 жыл бұрын

De nada Es mi placer!!!

תודה רבה אחלה סירטון

Really Good Video!!

Great job

@AirConAcademy

2 жыл бұрын

Thank you very much! I am glad he liked the video, and thank you for watching!

Great videos God bless brother!!!

@AirConAcademy

4 жыл бұрын

Thank you!!! and may God bless you too!!!

julio you the man

@AirConAcademy

4 жыл бұрын

Alex Corea thank you!!!! I hope this helps!!!!

Hi. I'm Marine Engineer with a very poor knowledge of Refrigeration and AirCon system. But since I started watching your clips, I've learned a lot and get courage to learn more each day, thus help me to operate the system effectively. Thank you very much. Question: Do you have online class? If yes drop me a link.

@AirConAcademy

3 жыл бұрын

Thank you so much for your comment! I'm so glad that I could help. That is why I put these videos on KZread because I know some guys need just a refresher and some guys just need a little bit of a push. They do have an online school and I I am sending you the link to the air conditioning class. There is a lot of information in this class. Good luck and I hope you enjoy it. airconacademy.com/courses/hvac-basic-courses/

Thanks

@AirConAcademy

2 жыл бұрын

Thank you! And thank you for watching! I'm glad you liked the video!

Great

@AirConAcademy

4 жыл бұрын

Thank you!!!!

Hi sir your information video so good and helpful. Sir i have 2.5 ton round shape reheem hvac this unit outdoor composer work properly. Problem is inside unite evaproter not cooling all coils 4 coil is hot another coil cold caplari also cold. This unit peston no 065 so sir what we do replaced peston same number or replaced all evaproter so sir please guide thanks so much

@AirConAcademy

5 жыл бұрын

m nadeem I would only replace the piston with the same number piston. If you can get the number of the piston the model number of the indoor coil and the outdoor unit and make sure they all match. Have you checked your superheat in that unit? If your superheat is high then you need to add refrigerant unless your high side pressure is excessively hot. In that case you probably have a restriction in the liquid line. Check my video on liquid line filter dryer‘s I explain how to troubleshoot that.

Sir your information is very useful thank you very much and I need one help sir one screw type compressor working good but that one high discharge temperature trip 134a Freon pressure 33 suction 243 discharge, discharge temperature 233

@AirConAcademy

5 жыл бұрын

it sounds like you may have too much superheat? BUT this is on a chiller I am sure. is it a flooded evaporator or direct expansion?

@hassanjalan6272

2 жыл бұрын

Hi

Teacher Julio. Which of them are specific for AC residencial.? Good class as always.

@AirConAcademy

5 жыл бұрын

The permanent split capacitor is mostly used in residential both compressor and Fans. I will see what i can do about the valve video. Thanks

@AirConAcademy

5 жыл бұрын

you would only see the Piston, the TXV, on older unit maybe the capillary tube.

Please can you discuss what is the different of external equalizer and internal equalizer, and what applications can use external and internal equalizer.

@AirConAcademy

4 жыл бұрын

The internal equalizing valves are used when the manufacturer does not expect a large pressure drop on the evaporator coil and an external equalizing line is used when the manufacture expects a pressure drop across the evaporator coil. So typically on larger units they may use an external equalized TXV. One thing to remember is you always replace a TXV or any other part with the exact replacement. I hope this helped.

@sadik1846

4 жыл бұрын

Deeply appriciated.

R22, in other countries became obsolete years ago. Even R410 being superseded now. Btw EXV is shown normally as EEV on circuit diagrams

@AirConAcademy

3 жыл бұрын

Yes R22 is gone in a lot of places but not here in the US. I know a lot of students that still go to units that have R22. Here it seems like 410a is going to be replaced with 454b? what is it being replaced with where you are? and yes some times it is EEV but some other people use EXV. Doing this it is so hard to get everything like every one sees it because like in your case there is always someone out there that has seen it a bit differently. Like some people here say TXV and others will say TEV? I tell my students do not get hung up on only one way to say it because someone else will say it a bit differently. Thank you for your input!!! it is always great to hear what other techs out there are running in to! AND Thank you for watching!!!!

Gas furnace classes too

@AirConAcademy

4 жыл бұрын

I will see what I can do thank you!!!

Our system have one compressor only for 6 refrigerated room chambers.. also I want to ask why Everytime the kitchen crew forgot to switch on the evaporator fan..I noticed froze building up on EPR line ,txv till compressure suction line as well..

@AirConAcademy

4 жыл бұрын

wildan sajise Do all of the boxes freeze when they forget to turn the fan on? Does each box have an individual fan switch or this one fan switch turn All of the fans off? If it is only one or maybe two that freeze when the fan is off. It sounds like maybe the EPR valve might be leaking by? Or it is not set properly? I was wondering what turns the compressor off? Is it a pressure switch? Or a temperature switch? Because if the compressor is not shutting off that might do it also.

Thanks teacher I'd like to ask you weather I can operate the unit by txv and without a liquid receiver ? Is that possible

@AirConAcademy

4 жыл бұрын

Yes you can operate an air conditioning unit without a liquid receiver. But it is recommended that you have one. If the lines are long. Meaning the suction and liquid line. And if you have a TXV as a metering device. Do not forget. If you have a TXV the unit needs to be charged by sub cooling so you have to have a good amount of sub cooling. Typically in the installation manual it will tell you what the sub cooling needs to be and it would tell you if you need a Liquid receiver. .

@user-ne8jk4yu5w

4 жыл бұрын

@@AirConAcademy sorry but i don't understand the last part could explain further please?

@AirConAcademy

4 жыл бұрын

When you say the last part are you talking about the Electronic Expansion Valve? I am not sure what you mean by the last part? please let me know.

A cap tube for r22 can it handle 410 freon ? The same? As r22?

@AirConAcademy

2 жыл бұрын

No, and it is not about the pressure. It is because of the size. A metering device designed for 410 a is approximately 15% smaller than for R 22. So you need to either make it longer or have a smaller diameter capillary tube.

Thanks. Greatly appreciate it, So the Evap temp for AC is 40 Deg Fahrenheit , What is the Evap temp for Coolers and Freezers? Is there a reason for AC Evap to be 40?

@AirConAcademy

2 жыл бұрын

Thank you for sending the questioning/comment, in an air conditioning system yes you would like the evaporator to be 40°F because the air temperature is going to be approximately 75°. This way you will have a temperature difference that is large enough and allow good heat transfer. If we are talking about a freezer, remember not everything freezes at 32° so we must maintain the freezer at a temperature of much lower than 32°. We may want to maintain the evaporator anywhere between 5°F to maybe 10 below zero Fahrenheit. It all depends on what it is that we are trying to do with the evaporator. In a cooler, I believe you might be talking about a water cooler? I am not sure you would want the temperature to be between 35 to 40° so the water will be nice and cool when you drink it but not cold enough where it will freeze. If you are talking about a cooler for flowers and candy you may want to keep the temperature around 45°F but then we have to worry about the humidity. We do not want to dry the flowers and plants out. We want to make sure that we maintain enough moisture and humidity in there to make them last a long time. I know this maybe a long explanation but I hope it makes sense. Thank you for watching!

@KINGPAFA

2 жыл бұрын

@@AirConAcademy Thanks and regards.

please give information of part winding wiring

@AirConAcademy

5 жыл бұрын

I hope to do that in this coming week Thank you

@Abushanb-zp6vy

5 жыл бұрын

Hi sre you information video so nice and helpful. I have reheem hvAc 2.5 ton this unit compressor working ok butt inside unit evaproter not cooling well. Evaproter 4 coil hot so sir we we do peston replace or evaproter please

i have 1 question with r134a the suction pressure go down and the evaporator pressure go up, this case how to fix or what happen?

@AirConAcademy

3 жыл бұрын

That is an interesting question. With any refrigerant when the suction pressure drops the evaporator saturation temperature will drop. Sometimes what happens is that there's not enough refrigerant in the system so as the suction pressure drops and the evaporator temperature drops the superheat is going to go up. What you might be looking at might be the superheat increasing. If you look at the PT chart as your pressure drops the saturation temperature also drops. Which is normal but I think you might be looking at the temperature at the outlet of the coil which is what we do to look at superheat. I'm not sure if this explains your question if it does not let me know. But if you notice your superheat is going to increase. Good luck thank you for setting the questioning.

@ngornbunpa6092

3 жыл бұрын

@@AirConAcademy we have add some freon now the compresure bcome freze and the hight pressure be come high? how to fix this case

@AirConAcademy

3 жыл бұрын

@@ngornbunpa6092 do you have a suction or liquid line filter dryer? Check to make sure that these are not plugged up. The liquid line dryer you check by seeing if there's a temperature difference between the inlet and the outlet of the dryer. The suction line dryer you check to see if there's a pressure difference between the inlet and the outlet of the drier. Also what type of metering device do you have? Maybe if it is a TXV it might be failing? Please let me know what you found with the dryers.

Actually our system have two compressor which we changed over every month..incase no.1 have a problem we change over to standby to no.2.we just pump down no.1 then transferred all freon to no.2 and put it on service

@AirConAcademy

4 жыл бұрын

I am sorry but I am working with several people on line with other problems. for some reason I can only see this message and not your earlier one, could you please remind me what the problem is that you are having?

Hello sir..I have a problem with our reefer provision..our meat and fish room chambers ranging from -17 to -21 Deg.C always have a froze on it's suction line even untill the suction compressor..same also on its txv..today I changed the txv of meat room with new spare but still same scenario..the txv is danfoss R407 orifice no.3..they said txv is preset from factory..so I didn't touch the setting..our system has a other room chambers for perishable goods ranging +4 +6 +8 ...only two frozen for meat and fish..the rest has a evap.press.regulator.. my problem only is the meat and fish room from txv to suction line return to compressor always frozen..level of refrigerant is ok...compressor suction pressure when running cut off at 4bar and cut in at 2.5 bar....I hope u can give me advice sir..by the way it's still reaching the desired temp which is -21 deg.C only problem is line always frozen...

@AirConAcademy

4 жыл бұрын

wildan sajise When you changed the TXV, did you pump down? Or recover the refrigerant? Do you have enough refrigerant in the system? Do you have a sight glass? What is your sub cooling? And in the freezer where you just changed the TXV what is your superheat reading now? And what is the suction pressure or what is the pressure in that evaporator now? Also, what type of refrigerant are you using?

@AirConAcademy

4 жыл бұрын

I was reading your massage again. If it is maintaining the proper temperature then you may not have a big problem. is the evaporator clogging with ice? The suction line being frozen only means that the temperature is below 32 degrees F. or 0 Celsius. I would insulate the suction line better. If the unit is keeping the correct temperature you may not have a problem. please let me know how it works out.

Very good bro

@AirConAcademy

Жыл бұрын

Thank you very much, and thank you for watching!