A very quick easy service call to start out . Then changing a Copeland sentronic oil pressure control . Any questions feel free to ask. Thanks everyone 👍
Great video! Thanks for posting. Have a great 4th and remember when you get that urge to have another hot dog don't do it, grab a beer instead. You'll thank me in the long run.
Nice job and hey bud you are only human like all of us so don't beat yourself up, instruction when you're under pressure to get the job done is an art 👍👍
Got a 1" deep socket 1/2" drive specially for those. Nice shout out on that o-ring. Compressor will trip on oil if you forget to put it on. New subscriber; loving the videos!
Great video Chris! I have a little gimme book that I keep all the computations in. I don't do a lot of work with semi hermitics but when I do I have oil pressure failures sometimes and it's good to remember that computation for oil pressure. Thank you again for the great video. Happy fourth of July! God bless.
Greetings all the way from France , bro ! Have some well deserved rest , mate . Oil return and control is the one thing that really does my head in . If possible , could you talk about how it actually works and how to get a proper return when doing the install etc . Cheers, mate , I appreciate what you're doing for us !
Nice video! Might’ve been a good idea to replace the oil and clean the pickup screen. If the sensor was dirty surely the pickup screen upstream was bound to be dirty too. Feels great to drain out old dirty oil with bits of crap in it and replace it with new.
The screen on the sensor can be cleaned and there is also an additional screen in the sump of the compressor that can clog and cause oil pressure safety to trip. Its a pain in the ass trying to clean the sump screen especially since the compressor is not elevated at all so draining and cleaning that screen will cause a big mess
I know that you know your stuff and i have changed many oil sensors over the years, one thing i would say is judging by the colour of the oil and the condition of the strainer, I would have changed the oil, then we all know how hard it is to convince the customer to spend the extra money.
The only criticism I would have is, you still have the underlying problem. You fixed the symptom but not the cause. Don’t you think an oil change and a couple of cleanup dryers are in order? It’s evident to me, your predecessor secured this piping with the benefit of nitrogen. That oil was contaminated. Now you have a nice new sensor that has enough room to collect dirt and your back to square one. I mean you already had the system pumped down. I did one last week at Hanscom and cleared he sight glass, it didn’t take that long to do. Like yours, the oil was dirty... Mine was r22 low temp with demand cooling also... now that’s a trip. Mike
hvac01453 yes we will be going back for an oil change at some point. The customer didn’t want to do it at the time. Can Only do what the customer wants to pay for
Great video! I have this problem at work and they said it was related to defrost setting issues on Monday. The next day the compressor is out again unable to keep temp. I took a glance at the side glass and oil level it's empty. Could defrost settings cause this problem?
Good videos on these semihermetics. But the let down is the vacuum part. How do you vacuum out the heads of these compressors when you have the discharge and suction valves front seated?
When both valves are front seat, you are completely isolated or block off the compressor from suction and discharge pipe. BUT your gauge port are now open to the crankcase/ head. Verify all valve are hold no leaks- by then just follow with your normal evacuation. Also one thing you have to remember is to install the service gauge before you preform the above procedure. Hope this helpful. I am still learning 🇺🇸
11:21 - The only question I have is how it was decided to change the control on this job. We know that a control system depends on the integrity of the sensors. You proved the sensor was faulty so, was there something else happening in the system that was not discussed that would lead to condemning the controller? I know you said the customer wanted it changed; but, I’d be too curious not to understand how that was diagnosed.
I have installed one of these 3s. I never get a green light and won’t cut off the compressor. Module has power and sensor ohms good. What do you think?
Or net oil pressure.. working on racks I find the oil screen on the body of the compressor gets clogged. Those sensors take a 1” wrench 🔧 but that enclosed box around that 2 d does seem like it’ll make super hard to get to
C Lilly I wouldn’t say it’s too old to start but I will say you will have a lot to learn . But if you are willing to work hard and learn then you should be ok. But it’s takes many years also to get into really knowing how a system works. But this trade can use any level of person as long as your willing to work and learn
C Lilly never to old to learn. I got an AAS degree in HVACR back in '89 but never went in to the field. Two years ago got the EPA certificate and have been doing in house refrigeration at the facility where I've been F&B purchasing for years. At 58 years old will I ever get as good as these lifetime trades guys? Doubtful, but I'm enjoying fixing broken things more than dealing with broken people and ready to make the change.
I’m about to do one today (first time). Is it necessary to pump down the unit into the receiver? Or, can I just close the suction and discharge valves and recover what’s left in the compressor? I’m asking because I’ve never pumped down a system like this for a walk in freezer
Question... I have a 404a unit that has a mechanical pressure switch. Compressor cycles and then oil switch trips, reset and will trip a short time after. I noticed on the one you replaced (electronic) there was a screen, does the mechanical set up have the same thing or can something in mine get clogged to cause trip issues? Thanks.
RJ_Make should be done when the oil is dirty or say it got contaminated from moisture or a burn out. . I recommended that this oil in this system be changed but it all depends if the customer wants to do it
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I appreciate you making videos for us when you're busy with life!
Thanks Chris, always appreciate the bits of knowledge from you seasoned guys. Thanks again and happy fourth.
Chris Cooley you too bro thank you
Just the video I needed heading to supply house for a replacement thank you sir
Awesome video. Very informative. Not many out there on the oil side. Happy 4th man!
Great video! Thanks for posting. Have a great 4th and remember when you get that urge to have another hot dog don't do it, grab a beer instead. You'll thank me in the long run.
Nice job and hey bud you are only human like all of us so don't beat yourself up, instruction when you're under pressure to get the job done is an art 👍👍
Good tip. I have a 3 or 4 inch craftsman ratchen 1/4 . I use drill sockets and tips to get in those tight places
Got a 1" deep socket 1/2" drive specially for those. Nice shout out on that o-ring. Compressor will trip on oil if you forget to put it on. New subscriber; loving the videos!
Mayhem Refrigeration thanks man , yes I have to get the deep socket on my truck. I have a shallow but not a deep hahaha
Thanks man for your videos
always good video thank you Chris
Thank you
Good video bro. Oil controls are always fun.
Good video. Thanks for explaining how to read oil pressure. Very helpful. I don’t see many oil switches working on light commercial refrigeration
Thanks man I appreciate that.
Very interesting thanks
Love to see you again on the field Chris! Stay safe & hidratated 👍
Thanks buddy
Great video Chris! I have a little gimme book that I keep all the computations in. I don't do a lot of work with semi hermitics but when I do I have oil pressure failures sometimes and it's good to remember that computation for oil pressure. Thank you again for the great video. Happy fourth of July! God bless.
Thanks blaze. You too as well man 👍
Very good video thanks for sharing your knowledge
Greetings all the way from France , bro ! Have some well deserved rest , mate . Oil return and control is the one thing that really does my head in . If possible , could you talk about how it actually works and how to get a proper return when doing the install etc . Cheers, mate , I appreciate what you're doing for us !
Sterling Archer the me buddy I appreciate that ! I’ll see what I can do about a video on that topic
@@Cscrefandhvac thank you very much indeed 👍
Thank you
Good video
Eric Goldhammer thanksman
Nice video! Might’ve been a good idea to replace the oil and clean the pickup screen. If the sensor was dirty surely the pickup screen upstream was bound to be dirty too.
Feels great to drain out old dirty oil with bits of crap in it and replace it with new.
Trever Kirk yes the unit needs an oil change. I recommend that to be quoted out
Great video. Thanks man. Happy holliday
Juan Carlos thanks you too man
👌👌👌
Thank you.
It sounds like the oil pressure sensor screen could use regular PM (annual?).
Nice job. Happy 4th enjoy.
The screen on the sensor can be cleaned and there is also an additional screen in the sump of the compressor that can clog and cause oil pressure safety to trip. Its a pain in the ass trying to clean the sump screen especially since the compressor is not elevated at all so draining and cleaning that screen will cause a big mess
Good info thanks for sharing
Thx for teaching
While your there it's necessary to clean oil pickup screen being that oil sensor looked like that..
chris great video, have you ever try cleaning the oil sensor bro
Yes I have . Sometimes they just get clogged up
I know that you know your stuff and i have changed many oil sensors over the years, one thing i would say is judging by the colour of the oil and the condition of the strainer, I would have changed the oil, then we all know how hard it is to convince the customer to spend the extra money.
Yes. I did recommend that the oil should be changed. Who knows if they will do it though haha
The only criticism I would have is, you still have the underlying problem. You fixed the symptom but not the cause. Don’t you think an oil change and a couple of cleanup dryers are in order? It’s evident to me, your predecessor secured this piping with the benefit of nitrogen. That oil was contaminated. Now you have a nice new sensor that has enough room to collect dirt and your back to square one. I mean you already had the system pumped down. I did one last week at Hanscom and cleared he sight glass, it didn’t take that long to do. Like yours, the oil was dirty... Mine was r22 low temp with demand cooling also... now that’s a trip.
Mike
hvac01453 yes we will be going back for an oil change at some point. The customer didn’t want to do it at the time. Can Only do what the customer wants to pay for
CSC Refrigeration and Hvac that might be a good thing to point out to these apprentices.
how big is that cooler??? that is a huge compressor !!!
I had a day full of cleaning sens screns and sump screens lol
Good video bud!
Great job 👍👍👍
Harry Dickson thanks Harry. I apologize for this video being rushed hahha. I start working and forget to get footage Ahhaha.
CSC Refrigeration and Hvac Don’t worry it was great
Great video. Don't u think that the old oil should have been replaced with new?
Yes , I didn’t mention it but I went back a few days after this and change the oil
Great video! I have this problem at work and they said it was related to defrost setting issues on Monday. The next day the compressor is out again unable to keep temp. I took a glance at the side glass and oil level it's empty. Could defrost settings cause this problem?
Good videos on these semihermetics. But the let down is the vacuum part. How do you vacuum out the heads of these compressors when you have the discharge and suction valves front seated?
When both valves are front seat, you are completely isolated or block off the compressor from suction and discharge pipe. BUT your gauge port are now open to the crankcase/ head. Verify all valve are hold no leaks- by then just follow with your normal evacuation. Also one thing you have to remember is to install the service gauge before you preform the above procedure. Hope this helpful. I am still learning 🇺🇸
11:21 - The only question I have is how it was decided to change the control on this job. We know that a control system depends on the integrity of the sensors. You proved the sensor was faulty so, was there something else happening in the system that was not discussed that would lead to condemning the controller? I know you said the customer wanted it changed; but, I’d be too curious not to understand how that was diagnosed.
That new sensor comes in the box with a new controller all as one so that's why the control was changed also.
I have installed one of these 3s. I never get a green light and won’t cut off the compressor. Module has power and sensor ohms good. What do you think?
Are the correct wires on the L and the M
Or net oil pressure.. working on racks I find the oil screen on the body of the compressor gets clogged. Those sensors take a 1” wrench 🔧 but that enclosed box around that 2 d does seem like it’ll make super hard to get to
Refrigeration Mechanic ya there isn’t much room in the single condensing units. It’s easier to do in a rack haha
CSC Refrigeration and Hvac yes sir it is have a great 4th as well. Keep em coming
Refrigeration Mechanic thanks brotha. You as well 🍺🍺
can you give advice on should a guy start in this field at 42 is that too old to start and have a good career in it??
C Lilly I wouldn’t say it’s too old to start but I will say you will have a lot to learn . But if you are willing to work hard and learn then you should be ok. But it’s takes many years also to get into really knowing how a system works. But this trade can use any level of person as long as your willing to work and learn
C Lilly never to old to learn.
I got an AAS degree in HVACR back in '89 but never went in to the field. Two years ago got the EPA certificate and have been doing in house refrigeration at the facility where I've been F&B purchasing for years. At 58 years old will I ever get as good as these lifetime trades guys? Doubtful, but I'm enjoying fixing broken things more than dealing with broken people and ready to make the change.
I’m about to do one today (first time). Is it necessary to pump down the unit into the receiver? Or, can I just close the suction and discharge valves and recover what’s left in the compressor? I’m asking because I’ve never pumped down a system like this for a walk in freezer
Michael Alvarado you can pump it down. Or you can close both service valves on compressor and recover what’s in the compressor
Supp CSC you make good videos can you make some Covid videos HVAC..Greetings from Southern California
good stuff.:)
With oil that dirty is there any reason to change the oil? Love the videos.
Sakman Du yes the oil needs to be changed. I recommended that it be done
Awesome stuff. Say you didn’t have that pressure sensor on you, could you clean that screen? Have you ever done that successfully?
Steve Izzi no I didn’t have the sensor . You could clean it but usually they just get replaced haha
CSC Refrigeration and Hvac yeah after doing all that to get it out you might as well just replace it. Thanks man happy 4th!
Didn’t want to vacuum the comp on second job?
I did. Just didn't show it
Question... I have a 404a unit that has a mechanical pressure switch. Compressor cycles and then oil switch trips, reset and will trip a short time after. I noticed on the one you replaced (electronic) there was a screen, does the mechanical set up have the same thing or can something in mine get clogged to cause trip issues? Thanks.
It could be the mechanical switch starting to fail . Have you checked your oil pressure ??
@@Cscrefandhvac failed... Looking to replace it with sentronic 3... Pressures were good switch bad... Thanks
Great video, good information for the new guys but it's a shame that you have to clarify so as not to set off the u-tuber po po's!
Brent A hahahahhahaha thanks man
tape 2 extra fuses in the control box for a saturday or sunday call 👍
Excellent idea my man. Thank you
At what point do you schedule an oil and filter change?
RJ_Make should be done when the oil is dirty or say it got contaminated from moisture or a burn out. . I recommended that this oil in this system be changed but it all depends if the customer wants to do it
Happy 4th
Hey when you connect gauges to the oil pump do you get oil in the lines?
JDT738126 yes absolutely. It can make a mess sometimes haha
@@Cscrefandhvac I figured, do you save a older set of guages just for that? I guess you can blow the gauges out with nitrogen after you use them huh
JDT738126 yes I have some older gauges and hoses but you can blow them out like you said also
i dont understand why people super tight those stupid oil level sensors ????
Hi
Happy 4th
Thanks buddy you too