Metrohm 881 Compact IC pro – Cation - Manual (Page 78)

6.1 Problems and their solutions
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881 Compact IC pro – Cation
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 14).
Marked rise in pres-
sure Inline filter (6.2821.120)
blocked. Replace the filter (6.2821.130) (see Chapter
5.6, page 64).
Guard column – blocked. Replace guard column (see Chapter 3.16,
page 42).
Separation column –
blocked. ￭ Regenerate separation column (see Chap-
ter 5.10.4, page 69).
￭ Replace separation column (see "Connect-
ing and rinsing the separation column",
page 45).
Note: Samples should always be microfiltered
(see Chapter 5.7, page 66).
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 37) switched on (see
Chapter 4.2, page 48).
Leak in the system. Check all capillary connections and seal leaks,
if necessary (see Chapter 3.5, page 14).
Eluent – Evaporation of the
organic solvent in the elu-
ent. Check the eluent bottle attachment (see Figure
10, page 24).
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.