Agilent 1100 Quat pump working and not leaking but not flowing

Question

Hello, our Agilent 1100 pump just came back from repair. We installed and connected to Chemstation and the pump sounds correct, but solvent is flowing back and forth instead of forward. How do we start troubleshooting this?

kbusch · Accepted Answer

Hey David, I recommend using isopropanol to try and reprime the system. The viscous solvent is good for getting rid of air bubbles in the system which could cause the "airlock". Open the purge valve and set the flow to 3-5 ml/min and see if you are getting the isopropanol to flow out of the purge valve waste. If it does not make it to the purge valve, you can release connections one by one to support getting rid of the airlock. I normally start with the connections from the degasser to the pump and work my way forward to see at what location the flow is no longer present. Hope this helps.

Agilent 1100 Quat pump working and not leaking but not flowing

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