Vacuum pumps are part of one of the final processes in the repair process. After you’ve diagnosed and repaired any leaks or various other issues in the system it’s time to recharge. Before recharging you really want to make sure the system is free of any unwanted gasses, air, or drinking water. If we were holding to stay in the machine, it could turn the essential oil it runs on into sludge and keep behind damaging impurities.
The draw on a vacuum pump is Ac Vacuum Pump china usually broken down into its “CFM,” or 
Cubic Feet per Minute. To estimate what your CFM requirements, consider the tonnage of the systems you focus on. Take the sq . root of that number and you’ll get the approximate CFM you need to have to utilize that system. Typical home systems need 4-5 CFM, while industrial and rooftop systems generally need just as much as 6-8 CFM.