Trouble pulling Vacuum
Working on charging my new system for the first time. Drawing a vacuum but I can’t get below 1160 microns. It’s been hours and I’ve tried 2 new pumps with fresh oil. Nitrogen Pressure test held at 325psi for 48 hours. Any idea what could be causing this? Harbor freight 3 cfm pump. CPS VG200 Vacrometer
Working on charging my new system for the first time. Drawing a vacuum but I can’t get below 1160 microns. It’s been hours and I’ve tried 2 new pumps with fresh oil. Nitrogen Pressure test held at 325psi for 48 hours. Any idea what could be causing this? Harbor freight 3 cfm pump. CPS VG200 Vacrometer