Metrohm 930 Compact IC Flex Oven/ChS/PP/Deg - Manual (Page 103)

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6 Troubleshooting
930 Compact IC Flex Oven/ChS/PP/Deg (2.930.2360)
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6 Troubleshooting
Problem Cause Remedy
Marked drop in
pressure. Leak in the system. Check all capillary connections and seal leaks,
if necessary (see Chapter 3.2, page 14).
The baseline has a
large amount of
noise. The eluent is not suffi-
ciently degassed. Ensure that the connectors for the eluent
degasser are firmly connected (see Chapter
5.6, page 63).
The eluent path has a leak. Check the eluent path and fix the leak.
High-pressure pump – Con-
taminated pump valves. Clean pump valves (see Chapter 5.8, page 65).
The eluent path is blocked. Check the eluent path and fix the blockage.
High-pressure pump –
Defective piston seals. Replace the piston seals (see Chapter 5.8,
page 65).
The pulsation absorber is
not connected or is defec-
tive. Connect (see Chapter 3.10, page 26) or
replace the pulsation absorber.
The baseline is drift-
ing. Thermal equilibrium is not
yet attained. Condition (see Chapter 3.21, page 55) the
instrument with the column oven (see Chapter
3.5, page 20) switched on.
Leak in the system. Check all capillary connections and seal leaks,
if necessary (see Chapter 3.2, page 14).
The organic solvent in the
eluent is evaporating. ￭ Check the eluent bottle cap (see Chapter
3.6, page 21).
￭ Constantly stir the eluent.
The pressure in the
system markedly
increases. The inline filter
(6.2821.120) is blocked. Replace the filter (6.2821.130) .
Suppressor blocked. ￭ Regenerate the suppressor (see Chapter
5.12.3.2, page 83).
Note: 6.2821.180 pump tubing connection
with filter must be used.