Most likely either the Orings on the plunger driver wheel or the wheel itself is worn.
I can also be the center bearing is too loose. For that remove the tray and spin the brass center piece with your fingers. It should come to a smooth and relatively prompt stop. If it spins freely tighten the hex bolt a little and try again.
12430 N Dowling Rd
Sercon Stable Isotope Mass Spectrometers
EuroVector Elemental Analyzers
eStore Parts & Consumables
Service & Support Former GVI IRMS
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I’ve got a problem with our Eurovector solid autosampler. Basically, it’s dropping 2 samples at once and it occurs twice during an overnight run. It’s happening roughly at the same spot in the carousel. I have the metal carousels and it seems to happen on both the bottom and top trays. I’ve looked at the obvious: cleaned the trays, replaced the ratchet gear, and cleaned the piston. I have a brand new motor as well. It’s been frustrating, especially when I have to go into the spreadsheet and fix the sample order…not to mention lost samples.
Any suggestions would be appreciated!
IRMS Laboratory Manager
Boston University Stable Isotope Laboratory
Department of Biology
5 Cummington Mall
Boston, MA 02215
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