7.1
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
100
￭￭￭￭￭￭￭￭
930 Compact IC Flex Oven/SeS/PP (2.930.2500)
Problem Cause Remedy
The eluent path is blocked. Check the eluent path and eliminate the block-
age.
The eluent contains gas
bubbles.
￭ Deaerate the high-pressure pump (see
chapter 4.18, page 50).
Baseline increasing
strongly.
Insufficient flow of regener-
ation solution or rinsing
solution.
See problem "MSM – Insufficient flow of
regeneration solution or rinsing solution."
MSM – Reduced capacity. Regenerate the MSM (see chapter 6.11.3.2,
page 84).
SPM – Reduced capacity. Regenerate the SPM (see chapter 6.11.3.2,
page 84).
Chromatograms
have poor resolution
Separation column –
Diminished separating effi-
ciency.
￭ Regenerate the separation column (see
chapter 6.16.4, page 96).
￭ Replace the separation column (see
"Connecting the separation column", page
56).
Extreme spread of
the peaks in the
chromatogram.
Splitting (dual
peaks)
Capillary connections –
Dead volume in the sys-
tem.
Check the capillary connections (see chapter
4.2, page 15) (use PEEK capillaries with an
inner diameter of 0.25 mm between the injec-
tion valve and the detector).
Guard column – Dimin-
ished efficiency.
Replace the guard column (see chapter 4.19,
page 52).
Separation column – Dead
volume at the column
head.
￭ Install the separation column in the oppo-
site flow direction (if the leaflet says this is
permissible) and rinse into a beaker.
￭ Replace the separation column (see
"Connecting the separation column", page
56).
Precision problems -
the measured values
are highly scattered.
Injection valve – Sample
loop.
Check the installation of the sample loop (see
"Optional: Exchanging the sample loop",
page 29).
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 6.15,
page 94).
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