Metrohm 881 Compact IC pro – Anion - Manual (Page 101)

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
6 Troubleshooting
881 Compact IC pro – Anion
￭￭￭￭￭￭￭￭ 91
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 17).
Marked rise in pres-
sure Inline filter (6.2821.120)
blocked. Replace the filter (6.2821.130) (see Chapter
5.6, page 75).
Suppressor – blocked. ￭ Regenerate the suppressor (see Chapter
5.11.3.2, page 83).
Note: 6.2821.180 pump tubing connection
with filter must be used.
Guard column – blocked. Replace guard column (see Chapter 3.18,
page 54).
Separation column –
blocked. ￭ Regenerate separation column (see Chap-
ter 5.12.4, page 89).
￭ Replace separation column (see "Connect-
ing and rinsing the separation column",
page 57).
Note: Samples should always be microfiltered
(see Chapter 5.7, page 77).
Injection valve – valve
blocked. Have the valve cleaned (by Metrohm service
technicians).
Drift of the baseline Thermal equilibrium not yet
attained. Condition instrument with the column heater
(see Chapter 3.14, page 40) switched on (see
Chapter 4.2, page 59).
Leak in the system. Check all capillary connections and seal leaks,
if necessary (see Chapter 3.5, page 17).
Eluent – Evaporation of the
organic solvent in the elu-
ent. Check the eluent bottle attachment (see Figure
10, page 27).
Peak areas lower
than expected Sample – leak in the sam-
ple path. Check the sample path.