Vacuum pumps need to be capable of pulling what level of vacuum?

Vacuum pumps used in refrigeration and air conditioning applications are typically required to achieve a very low level of vacuum to ensure that all moisture, air, and contaminants are effectively removed from the system before it is charged with refrigerant. A vacuum of 500 microns is generally considered sufficient to ensure the system is adequately evacuated.

Achieving this level of vacuum is critical because moisture and air in a refrigeration system can lead to several issues, including reduced efficiency, increased pressure, and the potential for ice formation on internal components. A good vacuum pump should ideally reach and maintain this level to ensure the longevity and efficient operation of the unit being serviced.

Levels higher than 500 microns, such as 750 or 1000 microns, may still leave moisture and contaminants in the system, which can compromise its performance. Therefore, the capability of a vacuum pump to reach 500 microns is essential for effective system evacuation.