Metrohm 872 Extension Module Suppression - Manual (Page 48)

6.1 Problems and their solutions ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
40 ￭￭￭￭￭￭￭￭ 872 Extension Module Suppression
6 Troubleshooting
6.1 Problems and their solutions
Problem Cause Remedy
Marked rise in pres-
sure Suppressor – blocked. ￭ Regenerate the suppressor (see Chapter
5.4.4.2, page 33).
Note: 6.2821.180 pump tubing connection
with filter must be used.
Peristaltic pump –
insufficient or no
delivery rate Peristaltic pump – contact
pressure too weak. Correctly set contact pressure (see "Set flow
rate", page 19).
Peristaltic pump – filter
blocked. Replace the filter (see Chapter 5.3.2.2, page
30).
Peristaltic pump – pump
tubing defective. Replace pump tubing (see Chapter 5.3.2.1,
page 29).
Background conduc-
tivity too high Suppressor – not connec-
ted. Connect the suppressor (see Chapter 3.5,
page 19).
Suppressor – regeneration
or rinsing solution flow
problems. Check the flow of the regeneration and rinsing
solution (see Chapter 3.5.2, page 23).
Suppressor – No (or
insufficient) pump-
ing of regeneration
or rinsing solution Leak in the system. Check connections.
Peristaltic pump – contact
pressure too weak. Correctly set contact pressure (see "Set the
contact pressure", page 19).
Peristaltic pump – filter
blocked . Replace the filter (see "Replacing the filter",
page 30).
Suppressor – backpressure
too high. Clean the suppressor (see Chapter 5.4.4.3,
page 35) or replace parts (see Chapter 5.4.4.4,
page 36).
Peristaltic pump – pump
tubing defective. Replace pump tubing.
Greater rise in the
baseline Suppressor – reduced
capacity. Regenerate the suppressor (see Chapter
5.4.4.2, page 33).