Metrohm 940 Professional IC Vario ONE/SeS/PP/Prep 3 - Manual (Page 119)

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6 Troubleshooting
940 Professional IC Vario ONE/SeS/PP/Prep 3 (2.940.1530)
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Problem Cause Remedy
Vacuum is not being
built Eluent degasser – Vacuum
connection on the rear of
the instrument is not
(tightly) sealed.
SPM – Insufficient
amount of regenera-
tion solution or rins-
ing solution is being
pumped. There is a leak in the sys-
tem. Check all connections.
Peristaltic pump – Contact
pressure too weak. Correctly set the contact pressure .
Peristaltic pump – Filter
blocked. Replace the filter .
SPM – Backpressure too
high. Clean the SPM or replace parts .
Peristaltic pump – Pump
tubing defective. Replace the pump tubing .