Metrohm 882 Compact IC plus – Anion - Manual (Page 92)

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