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DIONEX P680 PUMP
Posted: Wed Feb 10, 2016 8:20 am
by mamon11
i HAVE A PROBLEM WITH THE DEGASSER, I WANT TO KNOW HOW TO OPEN THE MODULE.
Re: DIONEX P680 PUMP
Posted: Wed Feb 24, 2016 12:53 pm
by sbrand
If you send an email to stefandotbrandatthermofisherdotcom i will send you the service instruction manual with detailled information how to change the degasser (and how to open the module...).
Good luck
Re: DIONEX P680 PUMP
Posted: Wed Jan 25, 2017 12:25 am
by danjstemarie
Does anyone have experience with a Dionex P680 LPG pump. the proportional valve is not operating at all. It appears that no voltages are applied to the solenoid valves. I am thinking that the board the valve is connected to might be faulty? Any suggestions?
Dan
Re: DIONEX P680 PUMP
Posted: Mon Jan 06, 2020 3:42 pm
by itspip
I'm having a similar issue with one of our P680 pumps. Is there a way to examine the degasser? I'm guessing there is a leak in the vacuum system.
Re: DIONEX P680 PUMP
Posted: Mon Jan 06, 2020 5:07 pm
by Multidimensional
If you have Dionex pump with the integrated 4-channel degasser module (e.g. P680A LPG-4), then you can remove the degasser module component assembly (vac pump with 4 chambers and tubing plus PCB) and send the module out for professional diagnostic testing and repair [http://www.chiralizer.com/uploads/8/9/7/7/89770565/hplc_degasser_repair_services_page.pdf]. The HPLC vacuum degasser should be professionally cleaned and serviced every 4 to 5 years (their max lifetime is 4 to 5 years). A worn or damaged vacuum degasser can contaminate your mobile phase so it is important to have them professionally serviced at regular intervals, or whenever a problem is observed.
Re: DIONEX P680 PUMP
Posted: Mon Jan 06, 2020 5:09 pm
by Multidimensional
The Pump channel solenoid valves only receive DC voltage when a channel is selected via the controller (very fast).