Varian 979

John, there are four reasons the leak detector will not enter "fine test". One is if you have the green sniffer button pressed (maybe accidently). Two is if you have enabled a range stop in the menus. Three, the test port pressure must be below 100 mT. Four, the leak rate reading must be less than 1 E-7, and trending down. Check it out and let me know. Or call me at 800 882-7426, option 5.

John, there are four reasons the leak detector will not enter "fine test". One is if you have the green sniffer button pressed (maybe accidently). Two is if you have enabled a range stop in the menus. Three, the test port pressure must be below 100 mT. Four, the leak rate reading must be less than 1 E-7, and trending down. Check it out and let me know. Or call me at 800 882-7426, option 5.