Troubleshooting; Problems And Their Solutions - Metrohm 882 Compact IC plus Manual

6.1 Problems and their solutions

6 Troubleshooting

6.1 Problems and their solutions
Problem
Marked drop in
pressure
Marked rise in pres-
sure
Drift of the baseline
Peak areas lower
than expected
82 ￭￭￭￭￭￭￭￭
Cause
Leak in the system.
Inline filter (6.2821.120)
blocked.
Suppressor – blocked.
Guard column – blocked.
Separation column –
blocked.
Injection valve – valve
blocked.
Leak in the system.
Eluent – Evaporation of the
organic solvent in the elu-
ent.
Sample – leak in the sam-
ple path.
Sample – blockage in the
sample path.
Sample – sample loop not
(completely) filled.
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
Remedy
Check all capillary connections and seal leaks,
if necessary (see Chapter 3.5, page 16).
Replace the filter (6.2821.130) (see Chapter
5.6, page 67).
Regenerate the suppressor (see Chapter
￭
5.11.3.2, page 74).
Note: 6.2821.180 pump tubing connection
with filter must be used.
Replace guard column (see Chapter 3.16,
page 46).
Regenerate separation column (see Chap-
￭
ter 5.12.4, page 80).
Replace separation column (see "Connect-
￭
ing and rinsing the separation column",
page 48).
Note: Samples should always be microfiltered
(see Chapter 5.8, page 69).
Have the valve cleaned (by Metrohm service
technicians).
Check all capillary connections and seal leaks,
if necessary (see Chapter 3.5, page 16).
Check the eluent bottle attachment (see
￭
Figure 10, page 25).
Stir the eluent.
￭
Check the sample path.
Check the sample path.
Prolong the sample transfer time.
882 Compact IC plus – Anion