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Low, fluctuating pressure on G1311A with no visible leaks

Question asked by b.clements on Aug 28, 2018
Latest reply on Aug 30, 2018 by tobknust

After replacing the pump head assembly on the G1311A for general maintenance (replacing pump seals, cleaning, etc), I am unable to return to higher pressures. There are no visible leaks from the pump head, and flow rate is roughly half of what Chemstation claims it is putting out. Sometimes I will see fluctuations from around 1-15 bar, even in conditions where I previously saw ~150-200 bar.

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