Vacuum pumps are component of one of the final procedures in the repair process. After you’ve Ac Vacuum Pump china diagnosed and repaired any leaks or various other issues in the system it is time to recharge. Before recharging you need to make sure the system is free of any undesirable gasses, air, or drinking water. If these were to remain in the system, it could turn the essential oil it operates on into sludge and leave behind damaging impurities.
The draw on a vacuum pump is 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 square root of that number and you’ll 
get the approximate CFM you need to have to work with that system. Typical home systems need 4-5 CFM, while industrial and rooftop systems generally need as much as 6-8 CFM.