Metrohm 850 Professional IC Anion MCS LP-Gradient - Manual (Page 118)

6.1 Problems and their solutions
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850 Professional IC – Anion – MCS – LP Gradient
6 Troubleshooting
6.1 Problems and their solutions
Problem Cause Remedy
Marked drop in
pressure Leak in the system. Check and seal connections (see Chapter 3.6,
page 20).
Marked rise in pres-
sure 6.2821.120 inline filter
blocked. Replace 6.2821.130 filter (see Chapter 5.6,
page 91).
MSM – blocked. ￭ Regenerate the MSM (see Chapter
5.11.3.1, page 96).
Note: 6.2821.180 pump tubing connection
with filter must be used (33-
3 ).
Conductivity detector
blocked. ￭ Shorten capillary ends by several mm (see
Chapter 5.14.1, Page 105).
￭ Rinse detector against the normal flow
direction (see Chapter 5.14.1, Page 105).
Guard column – blocked. Replace guard column (see Chapter 3.23,
page 70).
Separation column –
blocked. ￭ Regenerate separation column (see Chap-
ter 5.15.4, page 106).
￭ Replace separation column (see "Connect-
ing and rinsing the separation column",
page 73).
Note: Samples should always be microfiltered
(see Chapter 5.7, page 93).
Injection valve – valve
blocked. Have the valve cleaned (by Metrohm service
technicians).
Drift of the baseline Thermal equilibrium not yet
attained. Condition (see Chapter 3.17, page 52) instru-
ment with the column thermostat switched
on .
Leak in the system. Check and seal connections (see Chapter 3.6,
page 20).