Metrohm 930 Compact IC Flex ChS/PP/Deg - Manual (Page 101)

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6 Troubleshooting
930 Compact IC Flex ChS/PP/Deg (2.930.1360)
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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
5.5, page 62).
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 5.7, page 63).
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 5.7,
page 63).
The pulsation absorber is
not connected or is defec-
tive. Connect (see Chapter 3.9, page 26) or replace
the pulsation absorber.
The baseline is drift-
ing. 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
3.5, page 20).
￭ 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
5.11.3.2, page 81).
Note: 6.2821.180 pump tubing connection
with filter must be used.
Guard column – Blocked. Replace the guard column (see Chapter 3.18,
page 49).
Separation column –
Blocked. ￭ Regenerate the separation column (see
Chapter 5.15.4, page 91).