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 system it’s time to recharge. Before recharging you really want to make sure the system is free from any unwanted gasses, air, or water. If they were to remain in the system, it would turn the oil it runs on into sludge and leave behind Ac Vacuum Pump china damaging impurities.

The draw on vacuum pressure pump is usually divided into its “CFM,” or Cubic Feet per Minute. To estimate what your CFM needs, look at the tonnage of the systems you focus on. Take the square root of that amount and you’ll obtain the approximate CFM you must have to work with that system. Typical residential systems need 4-5 CFM, while industrial and rooftop systems generally require just as much as 6-8 CFM.