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Purge valve open, pressure detected

Question asked by chemist23 on Feb 11, 2019
Latest reply on Feb 22, 2019 by jhagel

Hi everyone,

 

I am trying to troubleshoot an issue with Agilent binary pump G1312B.

 

With purge valve open, flow rate set at 1 mL/min, I am receiving a pressure reading of ~7 bar. I am also noticing a slow leak coming out of the silicone waste line attached to the  top of the pump head (not the solvent waste line coming from the purge valve).

 

So far I changed and purge valve frit as well as the piston seals on pump head A, flushed the system with H2O, warm H2O and IPA to no avail.

 

Any advice would be appreciated thanks.

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