Metrohm 940 Professional IC Vario ONE/ChS - Manual (Page 99)

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6 Troubleshooting
940 Professional IC Vario ONE/ChS (2.940.1200)
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Problem Cause Remedy
￭ Replace the separation column (see "Con-
necting the separation column", page 49).
Precision problems -
the measured values
are highly scattered. Injection valve – Sample
loop. Inspect the installation of the sample loop (see
"Optional: Exchanging the sample loop",
page 28).
Sample – There are gas
bubbles in the sample. Use the sample degasser .
Sample – The rinsing vol-
ume is too small. Increase the rinsing time (see Chapter 5.14,
page 84).
Injection valve – Defective. Request Metrohm Service.
Vacuum is not being
built Eluent degasser – Vacuum
connection on the rear of
the instrument is not
(tightly) sealed.