Metrohm 930 Compact IC Flex ChS/PP/Deg User Manual

7.1
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98
￭￭￭￭￭￭￭￭
930 Compact IC Flex Oven/SeS/PP (2.930.2500)
Problem Cause Remedy
The pressure in the
system markedly
increases.
The inline filter
(6.2821.120) is blocked.
Replace the filter (6.2821.130) .
The MSM is blocked. ￭ Regenerate the MSM (see chapter
6.11.3.2, page 84).
Note: 6.2821.180 pump tubing connection
with filter must be used.
Guard column – Blocked. Replace the guard column (see chapter 4.19,
page 52).
Separation column –
Blocked.
￭ Regenerate the separation column (see
chapter 6.16.4, page 96).
￭ Replace the separation column (see
"Connecting the separation column", page
56).
Note: Samples should always be microfiltered .
Injection valve – blocked. Have the valve cleaned (by a Metrohm service
engineer).
The retention times
in the chromato-
gram have changed
unexpectedly.
Eluent - Incorrect concen-
tration
Create eluent with correct concentration.
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).
The eluent contains gas
bubbles.
￭ Purge the high-pressure pump (see figure ,
page 51).
High-pressure pump –
Defective.
Request Metrohm Service.
Peak areas are lower
than expected.
Sample – There is a leak in
the sample path.
Find and fix the leak in the sample path.
Sample – The sample path
is blocked.
Find and eliminate the blockage in the sample
path.
Sample – The sample loop
is not (completely) filled.
Adjust the transfer time for the sample (see
"Determining the transfer time", page 94).
Sample – There are gas
bubbles in the sample.
Use the sample degasser .

Metrohm 930 Compact IC Flex ChS/PP/Deg Specifications

General

Brand	Metrohm
Model	930 Compact IC Flex ChS/PP/Deg
Category	Laboratory Equipment
Language	English