Wish you made this video years ago! I bought that same machine about 5 years ago, and had to figure all that out by trial and error. I used a dumbbell to calibrate my scale. I used the machine for 4 years probably service 100 vehicles before I sold it and bought a brand new Robinair. It was a great machine. Like you, I replaced all kinds of things on it to get it to work correctly. I watched your whole series, nice job 👍🏼
Thanks for the comment, and glad to hear you liked the machine. Interesting to hear that you had a similar experience. Thanks for watching the entire saga. I have two more video to get out there.
@@johnsworkshop3312 I got pretty good on working on it. When I owned it I replaced the manifold gauge assembly, solenoid block, service hoses, couplers, calibrated the scale, tracked down and fixed numerous leaked causing the refrigerant to leak out. After a while I got tired of working on it and ponied up and bought a brand new unit. I love the new unit because in cold weather charging it will use the compressor to build tank pressure to force refrigerant into the system, automatic oil drain, and the database. But the 34134Z was my first AC machine and I made lots of money. I’ll be looking forward to watching the new videos, cheers John -Blaine
@@Number1redskinfan wow, you really did do a lot of work on your machine! That new machine sounds pretty slick. I like the idea of pumping the refrigerant in rather than hoping the saturation pressure will drive it in. Thanks for the comments!!
Hi, I just accident opened the air purge valve and a lot of air coming out. I don't know if anything happened when I accidentally removed that valve? please help me 😢
As long as it closes properly then you should be ok. It only needs to be opened for a short time to let some air escape. Then re-check the temperature -pressure relationship after it has been in a constant temperature environment for about 5 hours or so.
@@johnsworkshop3312question here, one suggested to me that I may have air in the tank since my recovery doesn’t work anymore (compressor is running though) and told me to purge the air until ice cold gas comes out. I purged and a lot of air came out, around 1 kg but no ice cold gas ever came out. Should it?
@@knulleriboy you can tell if there is air in the tank by letting it sit for several hours and then check the pressure-temperature table. The pressure should be pretty close to what the table says, but if it higher then you have some air in the tank. Need to give it plenty of time to come to equilibrium though.
@@johnsworkshop3312 thanks for your reply! Really want this machine working again.. Shouldn’t the freon gas be very cold when exposed to the atmosphere if sitting under pressure? Now my ISV is empty of any freon and air and recovery still not working so most likely the compressor is going bad. Is there anything else I can check before deciding the compressor is bad?
Glad you got it calibrated. I had another video that talked about that so hopefully you saw it. They are indeed good old machines. Thanks for your feedback!
I need help. I've trying to calibrate it. I've done that 3 times it still doesn't work right. When I lift up on the take it thinks I'm recovering the only difference is I still have freon in the tank. It's not empty. Any help would be great
@@matthewhood2137 not having an empty tank should be ok because it won’t be on the scale when you are calibrating. Add a small amount of weight to the scale , say 1/2 pound before you start the calibration and see if that helps.
Wish you made this video years ago! I bought that same machine about 5 years ago, and had to figure all that out by trial and error. I used a dumbbell to calibrate my scale. I used the machine for 4 years probably service 100 vehicles before I sold it and bought a brand new Robinair. It was a great machine. Like you, I replaced all kinds of things on it to get it to work correctly. I watched your whole series, nice job 👍🏼
Thanks for the comment, and glad to hear you liked the machine. Interesting to hear that you had a similar experience. Thanks for watching the entire saga. I have two more video to get out there.
@@johnsworkshop3312 I got pretty good on working on it. When I owned it I replaced the manifold gauge assembly, solenoid block, service hoses, couplers, calibrated the scale, tracked down and fixed numerous leaked causing the refrigerant to leak out. After a while I got tired of working on it and ponied up and bought a brand new unit. I love the new unit because in cold weather charging it will use the compressor to build tank pressure to force refrigerant into the system, automatic oil drain, and the database. But the 34134Z was my first AC machine and I made lots of money. I’ll be looking forward to watching the new videos, cheers John
-Blaine
@@Number1redskinfan wow, you really did do a lot of work on your machine! That new machine sounds pretty slick. I like the idea of pumping the refrigerant in rather than hoping the saturation pressure will drive it in. Thanks for the comments!!
Hi, I just accident opened the air purge valve and a lot of air coming out. I don't know if anything happened when I accidentally removed that valve? please help me 😢
As long as it closes properly then you should be ok. It only needs to be opened for a short time to let some air escape. Then re-check the temperature -pressure relationship after it has been in a constant temperature environment for about 5 hours or so.
@@johnsworkshop3312question here, one suggested to me that I may have air in the tank since my recovery doesn’t work anymore (compressor is running though) and told me to purge the air until ice cold gas comes out. I purged and a lot of air came out, around 1 kg but no ice cold gas ever came out. Should it?
@@ChinhNguyen-xg9tz you probably let some air and Freon out, but that should not cause a problem.
@@knulleriboy you can tell if there is air in the tank by letting it sit for several hours and then check the pressure-temperature table. The pressure should be pretty close to what the table says, but if it higher then you have some air in the tank. Need to give it plenty of time to come to equilibrium though.
@@johnsworkshop3312 thanks for your reply!
Really want this machine working again..
Shouldn’t the freon gas be very cold when exposed to the atmosphere if sitting under pressure?
Now my ISV is empty of any freon and air and recovery still not working so most likely the compressor is going bad.
Is there anything else I can check before deciding the compressor is bad?
thank you very much i got mine calibrated, these are good ole machines
Glad you got it calibrated. I had another video that talked about that so hopefully you saw it. They are indeed good old machines. Thanks for your feedback!
I need help. I've trying to calibrate it. I've done that 3 times it still doesn't work right. When I lift up on the take it thinks I'm recovering the only difference is I still have freon in the tank. It's not empty. Any help would be great
@@robertbruneau112 you’re very welcome. Glad I could help. Thanks for commenting.
@@matthewhood2137 the key I found is to add a very small amount of weight to the scale before you put on the known weight.
@@matthewhood2137 not having an empty tank should be ok because it won’t be on the scale when you are calibrating. Add a small amount of weight to the scale , say 1/2 pound before you start the calibration and see if that helps.