Vacuum pumps 
are part of one of the final procedures in the repair process. After you’ve diagnosed and repaired any leaks or additional issues in the Ac Vacuum Pump machine it is time to recharge. Before recharging you want to make sure the machine is free from any undesired gasses, air, or water. If we were holding to stay in the machine, it would turn the essential oil it operates on into sludge and keep behind damaging impurities.
The draw on vacuum pressure pump is usually divided into its “CFM,” or Cubic Feet each and every minute. To estimate what your CFM needs, consider the tonnage of the systems you work on. Take the square root of that number and you’ll obtain the approximate CFM you need to have to work with that system. Typical home systems need 4-5 CFM, while commercial and rooftop systems generally need as much as 6-8 CFM.
