- Step 1: Locating High and Low Side Service Ports.
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The best vacuums will be at the pump inlet which is why it is not useful to fit a vacuum gauge here. Eventually the molecules may equalise out but not if they have to navigate through a restrictive manifold and down a long thin hose, cluttered with obstructions like Schrader valves and depressors. Increasing vacuum hose diameters and removing obstructions will reduce vacuum times by hours and in some cases days. Using the correct vacuum set up on a large system we have reduced an acceptable five day evacuation down to two days and achieved a much better vacuum.
vacuum pump set ups . .
Understanding how to connect a vacuum pump and the principle of efficient evacuation can save time and effort as well as extending the life of our equipment. So how do we make our vacuum pump our best friend and not our enemy? Designate the pump and connections as a separate piece of equipment.
Keep it away from manifolds. Use the gas ballast in the early stages until the oil stops emulsifying.
Use short large diameter hoses and in-line Schrader valve removers. Always ensure that the refrigerant is removed completely and not frozen in the back of the system, otherwise it will lift the oil out of the pump and cause a seizure if left unattended; invalidating the warranty. Any enquiries to sales javac. Join our mailing list. Originally Posted by youngtech. You'd be hard pressed to find a better set-up on the market right now. Youngtech, on the post link that Beach put on this thread,look at post That is the way I do it and alot of others do as well.
Appion core removers are better than all the others they are rated for vac no one else's are get you two and you will not be disappointed. Originally Posted by Ed Janowiak. I looked at thread 58 and its a nice setup. The only thing I dont understand is how do you charge system while still in a vacuum?
How to Use a Vacuum Pump: 9 Steps (with Pictures) - wikiHow
I just dont like unhooking anything while under vacuum, im always afraid something will leak and that sucks literally. General Discussion Pro's Forum: Oil Burners Pro's Forum: Building Science Discussions Pro's Forum: Training and Education Pro's Forum: After you have let your vacuum run for a sufficient amount of time, close the valve that connects to the low-side gauge. Let your pump hold the vacuum for 15 minutes.
Shut off the vacuum pump.
When you are satisfied with how long your system held the vacuum, shut the pump off using the same switch mechanism you used to turn it on. Let your vacuum disengage completely before you disconnect the system. Once your vacuum has fully disengaged, you can disconnect the hose leading to the pump.
Your AC system should be fully evacuated at this point, and ready to be recharged or repaired.
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How to Vacuum Down and Recharge an Air Conditioner
Things You'll Need Vacuum pump. Article Info This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness. Air Conditioning Print Edit Send fan mail to authors. Did this article help you?