Love your videos man, got into Supermarket refrigeration a year ago and your videos are a huge help. I’ve gone through all your videos now and can wait for your next upload keep them coming please Appreciate you !
What I do is pump oil until there is no air left and full column of oil out of your hoses tighten it slightly on the oil rotor lock and pump a bit more oil out. Tighten the hose all the way and pump oil in the reservoir
Hook your discharge line from your recovery unit up to your manifold then let the pressure build in your isolated filter then when the pressure gets to about 250 psi to 300 Crack a valve and it'll push all the oil out of your filter. Do it several times. Then when you've done that switch hoses around and recover residual gas hopefully this makes sense.
Excellent work as always, I personally don't like to break the flare nuts loose if I don't have to so what I do is unbolt the cap then loosen the band and drop the shell but there is more than 1 way to skin a cat.
Great vid as always,anyway concerning the sightglass on that rack where its paralleled in by the 1/4"" connections (not full line size) as in this case was told its only purpose was mainly for as a moisture indicator being its not full line size and you should only rely on liquid level receiver indicator
Thank you for the input I appreciate comments like these :) Anytime you feel the need to comment something insightful go for it I want to keep the comments coming and to have it be a place where people can read through the comments and really learn I've already learned a lot from comments like these.
Did I miss it? I saw the "before" differential pressure readings at the oil filter and the "before" sight glass readings at the compressors. But I didn't see any "After" differential pressure readings at the oil filter and the "after" sight glass readings at the compressors.
I believe I took a pressure differential across the oil filter and I can't remember what the manual said it might be in the video but something like above 5 maybe it might be 10 PSI and you got to replace your oil filter. So yes you have to do it before and after
Besides the obvious contaminants in system, what might be causing repeated (every 3 weeks) dirty oil filter alarm on a system? System has 3x oil filters that we are changing constantly? What's something I might not have considered?
Without being there I couldn't really know. But a couple things come to mind. Hove you change the filter dryers. Have you done a moisture test on the system. Are all the condenser fans there are the compressors overheating and is it burning oil. Is your liquid injection or de super unique system working correctly if it's not your compressor i overheat causing contaminants for your oil filter. God bless I hope this gives you some Direction
Min 13:30 - cleaning the oil out of your gauges: Ok... After disconnect the Red line, you've got some remaining Liquid in the Red hose, which is boiling off, and then you re-open the Blue hose, and the boiling off liquid makes a "final force" down the Blue hose into the suction side of the system. Have I got that right?
Hey, you know those oil level control floats on Copeland's? What's the best tool to get to those pesky 7/16 bolts? I've been just using my gear wrench open end and flipping it. I wonder if they make super thin wall closed ends. Maybe a crows foot?
Min 5:30 That's where you've valved-off inlet and outlet. Are the compressors running while the oil line is "blocked"? How long would you guess the system would run before the whole system shuts down on low oil pressure?
Yes I leave It running there are safety that will stop any damage. And anyware from 30min to 2 hours depending on the rack. But it really would not be much trouble to shut of the rack for a hour.
@@hg2. Eventually. Some store have hi temp windows like 2 hours before the product goes bad. Also we just keep the icecream doors close and it holds in the cold well enough to get a quick job done
Appreciate it Gendron, this was super informative and to the point! (like usual) -Would it be possible to shut the inlet of the oil filter and have the system pull out whats inside like a regular pumpdown. (or would it only pull down and equalize with whatever that pressure is?) - Thanks for the tip on clearing the gauge lines at the end, I was wondering how you would get that oil out!
You could do that. That's a great idea. But it would only pull it down to suction pressure. But that's still good. It would probably go from like 60 PSI to like 50 in this case. But the real benefit would be that some oil would flow into the compressors and you would have less oil that you would have to deal with. But you would eventually have to recover it out of it that you couldn't get it down to zero. Great idea thanks for the comment.
It kind of is, So the compressors can hold around a gallon of oil apiece. So when I turn off that oil line There's usually like a 10 minute window before compressories start going off on oil failure. So typically you start and the rack is fully operational four approximately 10-20 minutes. Usually if it takes you about an hour then Every compressor will be turned off by oil failure. It's not a big deal Typically you have About a 2 hour window after shutting down the rack Before Food spoiling Occurs and that is Customer driven so It will vary by customer. So you finish up the filter then you stage the compressors back on. Usually not a big deal I hope that helps
Hi Gendron, I have a question here. I know the the oil level on oil level controller usually should between 1/8 and half, what if it is full, will it cause any problem? Should i pump out some oil from the compressor and let it remain at half?
It could be any of the following 1) compressor might not be running.if this is the case it will fill up with oil. 2) someone could have messed with the regular. 3) could be flood back 4) it was never set right. If you're concerned and you think there's a problem. You can pump out the oil Down to half a sight glass. Make sure the compressor runs Check that the oil regulator is set to the proper level.( Read the manual. ) Then check for flood back. Hope that helps :)
Seeing 100% oil in the manifold and sight glass looks so weird. Iv only been in the industry for 6 months and on resi and light commercial, 10 compressors is so crazy
Sir,good morning!I am one of your subscriber,followers and silent viewers also...sir how can apply in your company because I am HVAC/R TECHNICIAN as well I am a pilipino from the Philipines but now I'm here in Saudi Arabia and still working.
I'm sorry I don't really share the company that I work with because I don't want there to be some Type of conflict of interest that might jeopardize my channel or my job. But I will tell you I work in america and I am not entirely sure how that would work but you would have to get a work visa. But that's as far as I know. Good luck I hope my videos Help in your Career !
Great video - "A service call - start to finish"
Thanks.
Love your videos man, got into Supermarket refrigeration a year ago and your videos are a huge help. I’ve gone through all your videos now and can wait for your next upload keep them coming please Appreciate you !
You think you could do a video on adding oil to the rack ? Like what to isolate and how to purge the air out of the hoses
What I do is pump oil until there is no air left and full column of oil out of your hoses tighten it slightly on the oil rotor lock and pump a bit more oil out. Tighten the hose all the way and pump oil in the reservoir
You’re the best man, so helpful. I’m glad TH-cam exists and there’s good tech like you doing videos to teach.
Hook your discharge line from your recovery unit up to your manifold then let the pressure build in your isolated filter then when the pressure gets to about 250 psi to 300 Crack a valve and it'll push all the oil out of your filter. Do it several times. Then when you've done that switch hoses around and recover residual gas hopefully this makes sense.
Thanks, man.That's a great tip on getting out the oil before recovering!
Great tip removing oil from gauges
A good tech knows a good tech. Well done man. Thorough and informative.
Just what I needed to know.
Thanks for the kind words
I never thought about the bleeding off oil from gauges that way. Thanks for the tip brother.💯💯💯💯💯💯
Great video, lots of information, straight to the point🤜🤛👍👍
I have been binge watching all your videos, such great content!
Thanks for taking the time.
Excellent work as always, I personally don't like to break the flare nuts loose if I don't have to so what I do is unbolt the cap then loosen the band and drop the shell but there is more than 1 way to skin a cat.
Great tip thank you for the comment :)
Awesome job as usual your videos are my training guide
Great video! I appreciate you sharing your knowledge
Good Video , Thank you
Thank you for sharing
Great video brother
Great job God bless u
Thanks man happy to help
Great vid as always,anyway concerning the sightglass on that rack where its paralleled in by the 1/4"" connections (not full line size) as in this case was told its only purpose was mainly for as a moisture indicator being its not full line size and you should only rely on liquid level receiver indicator
Thank you for the input I appreciate comments like these :)
Anytime you feel the need to comment something insightful go for it I want to keep the comments coming and to have it be a place where people can read through the comments and really learn I've already learned a lot from comments like these.
Did I miss it? I saw the "before" differential pressure readings at the oil filter and the "before" sight glass readings at the compressors.
But I didn't see any "After" differential pressure readings at the oil filter and the "after" sight glass readings at the compressors.
I believe I took a pressure differential across the oil filter and I can't remember what the manual said it might be in the video but something like above 5 maybe it might be 10 PSI and you got to replace your oil filter.
So yes you have to do it before and after
Besides the obvious contaminants in system, what might be causing repeated (every 3 weeks) dirty oil filter alarm on a system? System has 3x oil filters that we are changing constantly?
What's something I might not have considered?
Without being there I couldn't really know.
But a couple things come to mind.
Hove you change the filter dryers.
Have you done a moisture test on the system.
Are all the condenser fans there are the compressors overheating and is it burning oil.
Is your liquid injection or de super unique system working correctly if it's not your compressor i overheat causing contaminants for your oil filter.
God bless I hope this gives you some Direction
Great teaching moment thabks
Min 13:30 - cleaning the oil out of your gauges:
Ok... After disconnect the Red line, you've got some remaining Liquid in the Red hose, which is boiling off,
and then you re-open the Blue hose, and the boiling off liquid makes a "final force" down the Blue hose into the suction side of the system. Have I got that right?
Yes :)
But it's just more that one side is a higher pressure than the other side. High pressure goes to low pressure
Great video 🤙
Hey, you know those oil level control floats on Copeland's? What's the best tool to get to those pesky 7/16 bolts? I've been just using my gear wrench open end and flipping it. I wonder if they make super thin wall closed ends. Maybe a crows foot?
I believe I just use Is my ultra thin wrenches.
Or you can buy ultra sleek sockets.
Good luck!
Min 12:00
Do you use Nylog on the flare connections?
I don't think so.
I think I just rubbed oil to help it seal.
But I can't really remember what I did but typically I just use oil
Min 5:30
That's where you've valved-off inlet and outlet.
Are the compressors running while the oil line is "blocked"?
How long would you guess the system would run before the whole system shuts down on low oil pressure?
Yes I leave It running there are safety that will stop any damage.
And anyware from 30min to 2 hours depending on the rack.
But it really would not be much trouble to shut of the rack for a hour.
@@gendronhvac-r1269
Thanks.
By "shut the rack down for an hour", you mean shut down The Oil, right?
@@hg2.
No shut down the rack for a hour is no big deal.
Ushly we have like 2-4 hour window.
@@gendronhvac-r1269
Thanks -- but won't shutting down the compressors (not the oil) for 1-2 hours, won't that "melt all the ice cream"?
@@hg2.
Eventually.
Some store have hi temp windows like 2 hours before the product goes bad.
Also we just keep the icecream doors close and it holds in the cold well enough to get a quick job done
Right on
Appreciate it Gendron, this was super informative and to the point! (like usual)
-Would it be possible to shut the inlet of the oil filter and have the system pull out whats inside like a regular pumpdown. (or would it only pull down and equalize with whatever that pressure is?)
- Thanks for the tip on clearing the gauge lines at the end, I was wondering how you would get that oil out!
You could do that. That's a great idea.
But it would only pull it down to suction pressure. But that's still good. It would probably go from like 60 PSI to like 50 in this case. But the real benefit would be that some oil would flow into the compressors and you would have less oil that you would have to deal with.
But you would eventually have to recover it out of it that you couldn't get it down to zero.
Great idea thanks for the comment.
Those bolts have a specific torque spec.
Thanks !
I did not know that :)
Great comment!!
Do you work on dehumidifiers?
No,
I do work on package units that have Dehumidifier in it.
Sir Curious is the rack operational when you replace oil filter at that unit
It kind of is,
So the compressors can hold around a gallon of oil apiece. So when I turn off that oil line There's usually like a 10 minute window before compressories start going off on oil failure. So typically you start and the rack is fully operational four approximately 10-20 minutes. Usually if it takes you about an hour then Every compressor will be turned off by oil failure.
It's not a big deal Typically you have About a 2 hour window after shutting down the rack Before Food spoiling Occurs and that is Customer driven so It will vary by customer.
So you finish up the filter then you stage the compressors back on.
Usually not a big deal I hope that helps
At the very beginning of the video the sightglass was flashing. Doesn’t that mean that it’s low on refrigerant?
Not necessarily,
If the receiver is full then it could just be a low load condition.
Hi Gendron, I have a question here. I know the the oil level on oil level controller usually should between 1/8 and half, what if it is full, will it cause any problem? Should i pump out some oil from the compressor and let it remain at half?
It could be any of the following
1) compressor might not be running.if this is the case it will fill up with oil.
2) someone could have messed with the regular.
3) could be flood back
4) it was never set right.
If you're concerned and you think there's a problem.
You can pump out the oil Down to half a sight glass.
Make sure the compressor runs
Check that the oil regulator is set to the proper level.( Read the manual. )
Then check for flood back.
Hope that helps :)
New York accent s so cool
Thank you,
I'm actually from the New England area but I'm glad you like my accent :)
Seeing 100% oil in the manifold and sight glass looks so weird. Iv only been in the industry for 6 months and on resi and light commercial, 10 compressors is so crazy
It certainly is a different animal and some people have dedicated gauges for oil because it can mess them up :)
a 29 nine guy. i’ve heard of your kind 😂. do you purge air from your recovery setup?
Yes,
But if I have a vacuum pump I will pull a vacuum sometime s
Sir,good morning!I am one of your subscriber,followers and silent viewers also...sir how can apply in your company because I am HVAC/R TECHNICIAN as well I am a pilipino from the Philipines but now I'm here in Saudi Arabia and still working.
I'm sorry I don't really share the company that I work with because I don't want there to be some Type of conflict of interest that might jeopardize my channel or my job.
But I will tell you I work in america and I am not entirely sure how that would work but you would have to get a work visa. But that's as far as I know.
Good luck I hope my videos Help in your Career !
im prettt sure the g5 twin can pump liquid so it says on the pamphlet. shouldnt have to be so gentle with it.,
I have never had a problem with it.
I never new it said that on the pamphlet thanks for the share! :)