Have you ever heard of or used refrigerant gas instead of nitrogen to break the vacuum for the triple evacuation? My boss have reprimanded me for using nitrogen. Explanation is that refrigerant gas is dryer. Feedback please? I’m begging you and I would love some science behind it if there is any.
When you have no micron gauge, try doing a THOROUGH pressures test, know you have standing pressure, take as long as you need to vacuum and then let charge go, if you never hear from them, your good 😂
![Best Practices for System Evacuation [2024 Version]](/img/n.gif)
Excellent video, thank you
Always use a micron gauge and avoid using a manifold when pulling a vacuum.
This should be the first thing that hvac schools should teach
Hi..
how.mutc is the minimum vacuum pressure for good results ?
500
@@TheOneshot78 thanks... i make 50 micron but when i shut the pump rise to 390 micron in few minutes...
Have you ever heard of or used refrigerant gas instead of nitrogen to break the vacuum for the triple evacuation? My boss have reprimanded me for using nitrogen. Explanation is that refrigerant gas is dryer. Feedback please? I’m begging you and I would love some science behind it if there is any.
Tell your boss to quit being a cheap fuck and buy nitrogen. You need it to pressure test too
This was common practice in the old days but with EPA rules and the price of refrigerant these days It just don't make sense.
The gasp at the end. 🤣 He said what he said.
Dan said!
When you have no micron gauge, try doing a THOROUGH pressures test, know you have standing pressure, take as long as you need to vacuum and then let charge go, if you never hear from them, your good 😂
foe one 1000w humidifier i make hours to get to 50 microns
john goodman
Why not do it 20 times? If 3 is good 20 is better. Do you do that on a car AC. No
I can't get Mexican HVAC techs to run a vacuum or weight refrigerant in my mini-splits. Buying my own equipment :(