New to the 1050 over pressure issue
Posted: Thu Dec 12, 2013 11:21 pm
by john.collins
I have an over pressure issue. If I start out at 1ml/min running DI water it takes about 7 minutes of over pressure. Previously the set up was running 1 ml/min pressure was 165 bar continuous no changes.
Bypassing everything still happens. I even traded pumps both must have the same problem.
Re: New to the 1050 over pressure issue
Posted: Fri Dec 13, 2013 8:55 am
by asm
Thats a little bit to few informations.
System is a 1050 Agilent HPLC?
You bypass the column and the pressure is still that high?
Then it seems like you have a clogged capillary or the pressure sensor is not working correct.
Re: New to the 1050 over pressure issue
Posted: Fri Dec 13, 2013 10:09 am
by bunnahabhain
Try exchanging the PTFE frit in the purge valve:
http://www.chem.agilent.com/Library/Sup ... a25094.pdf
If you don't have a replacement frit in your lab, try to run the pump without the frit (but not for analytical runs!) and see if your overpressure disappears.
Regards,
Jörg