Metrohm 882 Compact IC plus – Cation User Manual
Page 71
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6 Troubleshooting
882 Compact IC plus – Cation
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63
Problem
Cause
Remedy
Eluent – Blockage in the
eluent path.
Check the eluent path.
High pressure pump –
defective piston seals.
Replace (see Chapter 5.5.2, page 46) piston
seals .
Pulsation absorber not
connected.
Connect pulsation absorber (see Chapter 3.11,
page 30).
Pulsation absorber not
connected. or defective.
Connect pulsation absorber (see Chapter 3.11,
page 30). or replace it.
Background conduc-
tivity too high
Incorrect eluent.
Change the eluent (see Chapter 5.4.2.3, Page
45).
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 27).
Chromatograms
have poor resolution
Separation column –
diminished separating effi-
ciency.
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Regenerate separation column (see Chap-
ter 5.10.4, page 61).
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Replace separation column (see "Connect-
ing and rinsing the separation column",
page 38).
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 13)
(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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