Love the old building and cooler. It's great to see it still being appreciated. I agree with you on the electronic pressure controller. It is nice to be able to see the pressures and what's going on in the system. However, as with all electronics, there is much more of a chance of "sudden death" failure that takes out the entire system... and can't be easily replaced with a different system in emergency.
Great videos Jim,I am a retired engineer in the U.k & just watching how you go about a job brings back the old feeling of a job well done,keep up the good work.
Nice job Jim. Good to see a historic building is still standing. I haven't seen a walk-in like that since I worked on a belt driven compressor many moons ago.
Another great job Jim, got to love working with high voltage equipment in a wet dirt floor, can make a fella pucker up at times! keep the videos coming and thanks for posting.
I love your video's and knowledge. I've learned some stuff that has been useful. I think someone below mentioned it... but, my only personally concern is putting refrigerant back in a clean tank of refrigerant. You are going to get some contaminants back in that tank. Probably not enough to worry about I'm guessing is your take. I would probably agree... I will probably start doing it now that I've seen you do it. Keep em coming... I love watching a pro do their thing!
In the early 70's we were at a fire in a building just like the one your in and I was in the basement pulling down the ceiling to vent and a old timer on the job told us that the same type of ceiling was left over from the old speakeasy days.. of the 20's and 30's.
Nice work Jim. I know you don't want to hear it but that control has a defrost function so you could do away with the time clock. Those controls are good and like anything you just have to be familiar with them and have confidence in them.
You make it look easy. I like the pumping the excess back into the tank...could be a little dangerous for the uninitiated. Would any oil in the system contaminate the refrigerant in the tank? Makes me wonder why the contactor only lasted two years. I think I would check min voltage swing at compressor start. Could be insufficient wiring in the old building to support motor start inrush on the single phase system.
hi Mr Jim .im a little confuse, you said that your suction pressure is 29 psi for a 404a .29 psi = -4 *f so the evap woul be 19*f ? than you again for your time and knowledge.
good clip Jim those digital thermostats are not so bad but I despise them if they use them for pressure stats I use them specifically for temperature and evaporator fan control only I think I will make a clip in a few days about them if you would like to see it
Electronic "computers" seemed to have invaded/replaced just about all analog stuff in modern equipment outside of HVAC/R, So its not so surprising to see it happen in HVAC/R as well. I remember when TVs were actually TVs, now they are just computers with a screen attached. If anything, its going to become even more integrated to replace more mechanical/electrical switches and cutouts. I am surprised they haven't replaced contactors yet with SSRs. Pretty soon you wont even need the iManifold or testo because youll be able to link your smart device right to the control board and get all the pressures, calculations, and everything you need right there from the machine itself using some sort of service code/app! So if your anti-technology, its only going to get worse as time goes by.
29 # for suction side for 404 is -5 F isn't it a little too cold for walking cooler ?? By the way thanx for the videos you put on you tube Jim I'm a HVAC student and they help a lot
Man I wish we could use you where I work. You don't do band aid fixes on anything. Half the time our maintenance people come in, they'll do a band aid fix...And hope that it holds. The only new condensers/evap units we have are out walk in cooler and walk in freezer. Everything else is held together with electrical tape, duct tape, or gum.
Low charged short cycled the contactor to death. They will probably faint before you tell them you also have to fix the leak . Gotta love restaurants .
I wondered the same thing myself. Those tanks are required to have check valves to prevent them from being refilled. Maybe the check valve is a bit leaky?
He's not getting it back in the tank. What's happening is liquid is filling the hose. I believe a hose will carry about 3 or 4 ounces of liquid refrigerant. So, he's reducing the amount in the system by 3 or 4 ounces.
Liam Bermingham only when the condensing unit is above the evaporator, you don't need them when the compressor is below the ecap. You put it at the lowest part of the system right after the evaporator, the oil collects there and gets pushed up to the compressor. In the past they were necessary with mineral based oil, I'm not so sure how necessary they are with POE oil, but it can't hurt to use them to protect the compressor. The main function is "oil return".
OOOOOwwwwwww and most of the owners of the basement don't give a damn about black mold... hey just cared boutgetting cold to sell, to make sales... Just saying... Hope u make some cheddar on the job
3:41 it’s so quiet in there you can hear the defrost clock motor running, gotta love that
Sr Jim Pettinato I like all your videos! you're professional thanks for sharing Your knowledge and experience.
Mr. Jim ,I like watching things being fixed.
Good work !!!!
Love the old building and cooler. It's great to see it still being appreciated.
I agree with you on the electronic pressure controller. It is nice to be able to see the pressures and what's going on in the system. However, as with all electronics, there is much more of a chance of "sudden death" failure that takes out the entire system... and can't be easily replaced with a different system in emergency.
Thanks for your informative answer. I wish you all the best.
Great videos Jim,I am a retired engineer in the U.k & just watching how you go about a job brings back the old feeling of a job well done,keep up the good work.
really liked your video well done had a similar situation. Thanks for being so in depth with your video. I will certainly watch more of your videos
Hi Jim. I just discovered your channel two days ago. It's been a marathon of your videos since then. I love it ! Keep up the good work bud !
Nice job Jim. Good to see a historic building is still standing. I haven't seen a walk-in like that since I worked on a belt driven compressor many moons ago.
Jim you made great effort to make this video in the dark , thank you . I learned quite a lot a good lesson about bad contactor.
Great video!!! I'm planning on attending refrigeration school next month!!!! Love your videos
Thank you for the journey
really enjoy learning from your Videos. Keep them coming
I love your videos Jim, all of them!
i thank you for devoating your time to uploading all your videos.
you do a great job.
kody mackey Thanks for commenting
Another great job Jim, got to love working with high voltage equipment in a wet dirt floor, can make a fella pucker up at times! keep the videos coming and thanks for posting.
I love your video's and knowledge. I've learned some stuff that has been useful. I think someone below mentioned it... but, my only personally concern is putting refrigerant back in a clean tank of refrigerant. You are going to get some contaminants back in that tank. Probably not enough to worry about I'm guessing is your take. I would probably agree... I will probably start doing it now that I've seen you do it. Keep em coming... I love watching a pro do their thing!
In the early 70's we were at a fire in a building just like the one your in and I was in the basement pulling down the ceiling to vent and a old timer on the job told us that the same type of ceiling was left over from the old speakeasy days.. of the 20's and 30's.
Thanks for uploading. I noticed the label for r404 on the compressor. Its a nice touch.
PHC Apprentice with all the refrigerant change overs it's necessary, and it looks good for the customer, more professional. Thanks for commenting
Very good video!
Thanks
Nice work Jim. I know you don't want to hear it but that control has a defrost function so you could do away with the time clock. Those controls are good and like anything you just have to be familiar with them and have confidence in them.
Thanks for another great video.
Pops McCartney Thanks for commenting
Following You Now! Like this little problems to see resolved!
Great video .....easy fix,I like the gauges your using.......Im still using the old style, what make are they
Hey Jim, I'm currently in school for HVAC, it's awesome to get to come on virtual calls with you. Cheers!
how much need between intal and output differential for super heat freezer and cooler
Great videos. You like your work.
Jim C.
Liam Bermingham yeah
You make it look easy. I like the pumping the excess back into the tank...could be a little dangerous for the uninitiated. Would any oil in the system contaminate the refrigerant in the tank? Makes me wonder why the contactor only lasted two years. I think I would check min voltage swing at compressor start. Could be insufficient wiring in the old building to support motor start inrush on the single phase system.
when you dump refrigerant through the high side while the compressor is running, don´t you loose a lot of oil?
Nice video Jim! Good work
Main.Tech (Rick) Thanks for commenting
Great video Jim.
Charles
hannarye Thanks for commenting
hi boss one floor standing unit give error er10 what's means of this
Most of the A/C controls I have been around have been 24 VAC .
Is it common for refrigeration controls to be line voltage ?
Thanks , :-)
Wyr
God bless
+Wyr Twister yes
hi Mr Jim .im a little confuse, you said that your suction pressure is 29 psi for a 404a .29 psi = -4 *f so the evap woul be 19*f ? than you again for your time and knowledge.
I wish we could have an update on Jim
hi jim i thought the suction should be around 55psi for a 20 degree evap .
good clip Jim those digital thermostats are not so bad but I despise them if they use them for pressure stats I use them specifically for temperature and evaporator fan control only I think I will make a clip in a few days about them if you would like to see it
hardcooling please do, I can't see them replacing the good old Ranco 1549,
Electronic "computers" seemed to have invaded/replaced just about all analog stuff in modern equipment outside of HVAC/R, So its not so surprising to see it happen in HVAC/R as well. I remember when TVs were actually TVs, now they are just computers with a screen attached. If anything, its going to become even more integrated to replace more mechanical/electrical switches and cutouts. I am surprised they haven't replaced contactors yet with SSRs. Pretty soon you wont even need the iManifold or testo because youll be able to link your smart device right to the control board and get all the pressures, calculations, and everything you need right there from the machine itself using some sort of service code/app! So if your anti-technology, its only going to get worse as time goes by.
THEtechknight I agree with you but by the time that happens I'll have been retired
29 # for suction side for 404 is -5 F isn't it a little too cold for walking cooler ?? By the way thanx for the videos you put on you tube Jim I'm a HVAC student and they help a lot
Man I wish we could use you where I work. You don't do band aid fixes on anything. Half the time our maintenance people come in, they'll do a band aid fix...And hope that it holds. The only new condensers/evap units we have are out walk in cooler and walk in freezer. Everything else is held together with electrical tape, duct tape, or gum.
Low charged short cycled the contactor to death. They will probably faint before you tell them you also have to fix the leak . Gotta love restaurants .
Good Job in early am! was the coil of the three pole contactor 208 or 120 volts?
rmwaseem 208/230V Thanks for commenting
I'm suprised it's not drier with those condensors down there!
WOW Jim you have ALOT of VIDEOS... Nice
When you put refrigerant back to the tank from high side you also get some oil into your tank. Does that affect the refrigerant in your tank?
Guy Hakverdi if the system doesn't have moisture or a burn out it would be insignaficant
Nice work. That is an old place.
Nice work jim
awsom70 Thanks for commenting
R.I.P. Jim
Juan Lopez did something happen to Jim?
leslie orm yes he passed away about 2 years ago. He is missed in our trade. I felt like I was working with him watching his videos.
now thats fine craftsmanship.
was that basement filled with asbestos?
kody mackey no, it was built before the asbestos period. Thanks for commenting
Interesting video. Is there any chance you can upload it without the anti-shaking enabled? You get sea sick watching for too long :(
***** sorry, Thanks for commenting
How is that freon going back in the tank? They have a check valve on them.
I wondered the same thing myself. Those tanks are required to have check valves to prevent them from being refilled. Maybe the check valve is a bit leaky?
He's not getting it back in the tank. What's happening is liquid is filling the hose. I believe a hose will carry about 3 or 4 ounces of liquid refrigerant. So, he's reducing the amount in the system by 3 or 4 ounces.
4:30 am call?
I'm fairly new to the trade. I didn't know you could put gas back into the bottle.
eric4467 it will take some very slowly, it has a check valve.
*****
eric4467 o thanks
I understand about one wire off and one wire on
I hate those condensing units! Too smart for their own good, and doing unpredictable stuff.
Need help. When should you put a "P" trap on the suction line?
Thanks for the videos. I have spent hours during the past week watching them.
Liam Bermingham only when the condensing unit is above the evaporator, you don't need them when the compressor is below the ecap. You put it at the lowest part of the system right after the evaporator, the oil collects there and gets pushed up to the compressor. In the past they were necessary with mineral based oil, I'm not so sure how necessary they are with POE oil, but it can't hurt to use them to protect the compressor. The main function is "oil return".
When contacters not pulling in,
First thing to do is Ohm the coil.
that's funny I did that once and was like $%#$#@#$%#$# one @ a time or mark em or a good picture.
poor evap air flow
but need more lights there u cant work like
OOOOOwwwwwww and most of the owners of the basement don't give a damn about black mold... hey just cared boutgetting cold to sell, to make sales... Just saying... Hope u make some cheddar on the job
Enjoy that asbestos treatment.
Love the Videos