Vacuum pumps are component of one of the final processes in the repair process. After 
you’ve diagnosed and repaired any leaks or various other issues in the machine it is time to recharge. Before recharging you need to make sure the machine is free from any undesirable gasses, air, or drinking water. If these were to stay in the machine, it could 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 per Minute. To estimate what your CFM requirements, consider the tonnage of the systems you work on. Take the sq . root of that amount and you’ll obtain the approximate CFM you need to have to utilize that system. Typical Ac Vacuum Pump residential systems need 4-5 CFM, while commercial and rooftop systems generally require just as much as 6-8 CFM.