Metrohm 882 Compact IC plus – Anion – MCS User Manual
Page 103
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6 Troubleshooting
882 Compact IC plus – Anion – MCS
￭￭￭￭￭￭￭￭
93
Problem
Cause
Remedy
Data of the separa-
tion column cannot
be read.
Column chip contamina-
ted.
Clean the contact surfaces of the column chip
(with alcohol).
Column chip defective.
1. Save column configuration in MagIC Net™.
2. Notify Metrohm Service.
Individual peaks
greater than expec-
ted
Sample – carry-over of the
samples from previous
measurement.
Rinse system longer between two samples.
Poor reproducibility
of the retention
times
Eluent – Leak in the eluent
path.
Check the eluent path.
Eluent – Blockage in the
eluent path.
Check the eluent path.
Eluent – Gas bubbles in the
eluent.
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Deaerate the high pressure pump (see
Chapter 3.9.2, page 32).
Suppressor – No (or
insufficient) pump-
ing of regeneration
or rinsing solution
Leak in the system.
Check connections.
Peristaltic pump – contact
pressure too weak.
Correctly set contact pressure (see "Set the
contact pressure", page 44).
Peristaltic pump – filter
blocked .
Replace the filter (see "Replacing the filter",
page 80).
Suppressor – backpressure
too high.
Clean the suppressor (see Chapter 5.11.3.3,
page 84) or replace parts (see Chapter
5.11.3.4, page 85).
Peristaltic pump – pump
tubing defective.
Replace pump tubing.
Chromatograms
have poor resolution
Separation column –
diminished separating effi-
ciency.
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Regenerate separation column (see Chap-
ter 5.13.4, page 89).
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Replace separation column (see "Connect-
ing and rinsing the separation column",
page 55).
Extreme spread of
the peaks in the
chromatogram.
Splitting (dual
peaks)
Capillary connections –
dead volume in the system.
Check connections (see Chapter 3.5, page 17)
(use PEEK capillaries with an internal diameter
of 0.25 mm between the injection valve and
detector).
Guard column – diminished
performance.
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