6 troubleshooting, 1 problems and their solutions, Problems and their solutions – Metrohm 872 Extension Module Suppression – MCS User Manual
Page 51

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6 Troubleshooting
872 Extension Module Suppression – MCS
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43
6 Troubleshooting
6.1
Problems and their solutions
Problem
Cause
Remedy
Marked rise in pres-
sure
Suppressor – blocked.
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Regenerate the suppressor (see Chapter
5.4.3.2, page 36).
Note: 6.2821.180 pump tubing connection
with filter must be used.
Peak areas lower
than expected
MCS – not connected.
Connect the MCS.
Peristaltic pump –
insufficient or no
delivery rate
Peristaltic pump – contact
pressure too weak.
Correctly set contact pressure (see "Set flow
rate", page 20).
Peristaltic pump – filter
blocked.
Replace the filter (see Chapter 5.3.2.2, page
34).
Peristaltic pump – pump
tubing defective.
Replace pump tubing (see Chapter 5.3.2.1,
page 33).
Very noisy baseline
MCS –
CO
2
adsorption cartridge
exhausted.
Replace CO
2
adsorption cartridge (see Chapter
MCS – vacuum pump
defective.
Contact the Metrohm Service.
Background conduc-
tivity too high
Suppressor – not connec-
ted.
Connect the suppressor (see Chapter 3.6,
page 21).
MCS – not connected.
Connect the MCS.
Suppressor – regeneration
or rinsing solution flow
problems.
Check the flow of the regeneration and rinsing
solution (see Chapter 3.6.2, page 24).
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 20).
Peristaltic pump – filter
blocked .
Replace the filter (see "Replacing the filter",
page 34).