Awesome video on demonstrating volume and refrigerants.! It’s still something I’m training my brain to think about correctly. This definitely helped a lot.! Thanks Ty.
We had one, never used it once. At one time I do know they use to do a lot of small appliance work before it became impractical. (Throw away) Thanks again for the video! 🥃🥃🍺🍺🍺🍿🎯 Stay safe. Retired (werk'n) keyboard super tech. Wear your safety glasses!
I’ve been doing some research but I can’t find nothing conclusive. I work on small appliances mainly r134a, is there a way to convert the scale from let’s say r12 on the charging cylinder to get the correct charge in r134a? Just curious
hey, have a question. Does air weight increase with pressure in refrigerant cylinder? Example: I Have cylinder for recovering refrigerant, lets assume there is 1000g(on scale) pure R134a, without contamination. Whats happend when i recover refrigerant out of system, which has multiple vacuum leaks ( like O-Rings, compressor front seal shaft etc..) When i ssuck refrigerant, deep down to microns level, that of course that with refrigerant i ssuck air too through these leaks. So, i know that in system was 500g R134. Whats happend to my cylinder weight if i recovered 500g of refrigerant + unknow ammount of air ? It is possible that my scale show my for example 1600g instead of expected 1500g?? these are just sample numbers to illustrate the question Thanks.
I don't think there will be enough air to change the weight but it will definitely throw off the temperature pressure. Air does have weight though. Wh I go scuba diving I have to account for the difference in weight of the air in my tank and then the scuba tanks are filled the weight more.
What about your hose? Do you refill the hose. Otherwise you will have a few ounces that will be left in the hose, and the critical charge will be off. Vapor has weight too. So if you are determining the weight buy the liquid line, did they compensate for that in the chart on the cylinder?
When the tank was heated the higher pressure pushed most of the liquid in. Then after the system was running the rest would throttle threw the suction side. The only thing left would be vapor. There would be no measurable liquid left in the hose.
@@love2hvac so the vapor weight is not as measurable. I hav a fridge that has only 5oz of refrigerant. So I pre-charged my manifold and hoses. Then zeroed out my scale. Barely cracked the valve on my hose, and watched the scale closely. Does not take much to squeeze in 5oz. I did that all as liquid. I have charged as vapor before with 22 and 134a. I was just wondering if something so little on a charge, like only 5oz where you could be off 1oz due to vapor and pressure differential. I do understand heating the cylinder will raise its pressure and when running the low side (suction) will come down. Is it enough that it won’t matter even in something with that little of a charge and the cylinder has a lot of space to retain a couple ounces of refrigerant? Or do you use a smaller cylinder for smaller jobs?
I do with communicating residential and light commercial systems I will eventually get to that. I am limited on building automation DDS systems and do not have any plans to provide training for that currently.
Awesome video on demonstrating volume and refrigerants.! It’s still something I’m training my brain to think about correctly. This definitely helped a lot.! Thanks Ty.
Obsolescence turned to lessons. Well explained. Thank you Sir 👍
We had one, never used it once.
At one time I do know they use to do a lot of small appliance work before it became impractical. (Throw away)
Thanks again for the video!
🥃🥃🍺🍺🍺🍿🎯
Stay safe.
Retired (werk'n) keyboard super tech. Wear your safety glasses!
Though not as popular as it used to be, the charging cylinder is still used for small apliance/critical charge equipment.
I did not know they where still being used. thanks!
The heater was to warm cold refrigerant that was below the lowest pressure reading on the Dial a charge.
YEP!
How fun was it lugging that around?
I’ve been doing some research but I can’t find nothing conclusive. I work on small appliances mainly r134a, is there a way to convert the scale from let’s say r12 on the charging cylinder to get the correct charge in r134a? Just curious
It's doable but it would be a lot of work.
You would have to look up the volume of each refrigerant at each temperature and convert it over
hey, have a question.
Does air weight increase with pressure in refrigerant cylinder?
Example:
I Have cylinder for recovering refrigerant, lets assume there is 1000g(on scale) pure R134a, without contamination.
Whats happend when i recover refrigerant out of system, which has multiple vacuum leaks ( like O-Rings, compressor front seal shaft etc..)
When i ssuck refrigerant, deep down to microns level, that of course that with refrigerant i ssuck air too through these leaks.
So, i know that in system was 500g R134. Whats happend to my cylinder weight if i recovered 500g of refrigerant + unknow ammount of air ?
It is possible that my scale show my for example 1600g instead of expected 1500g??
these are just sample numbers to illustrate the question
Thanks.
I don't think there will be enough air to change the weight but it will definitely throw off the temperature pressure.
Air does have weight though. Wh I go scuba diving I have to account for the difference in weight of the air in my tank and then the scuba tanks are filled the weight more.
What about your hose? Do you refill the hose. Otherwise you will have a few ounces that will be left in the hose, and the critical charge will be off. Vapor has weight too. So if you are determining the weight buy the liquid line, did they compensate for that in the chart on the cylinder?
When the tank was heated the higher pressure pushed most of the liquid in. Then after the system was running the rest would throttle threw the suction side. The only thing left would be vapor. There would be no measurable liquid left in the hose.
@@love2hvac so the vapor weight is not as measurable. I hav a fridge that has only 5oz of refrigerant. So I pre-charged my manifold and hoses. Then zeroed out my scale. Barely cracked the valve on my hose, and watched the scale closely. Does not take much to squeeze in 5oz. I did that all as liquid. I have charged as vapor before with 22 and 134a. I was just wondering if something so little on a charge, like only 5oz where you could be off 1oz due to vapor and pressure differential. I do understand heating the cylinder will raise its pressure and when running the low side (suction) will come down. Is it enough that it won’t matter even in something with that little of a charge and the cylinder has a lot of space to retain a couple ounces of refrigerant? Or do you use a smaller cylinder for smaller jobs?
Do you have any training on communication systems?
I do with communicating residential and light commercial systems I will eventually get to that.
I am limited on building automation DDS systems and do not have any plans to provide training for that currently.
@@love2hvac 👍 sounds great I'm pumped, will be looking forward to those , thank you for all the work you do on providing the education.