Metrohm 882 Compact IC plus Manual page 93

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Problem
Peristaltic pump –
insufficient or no
delivery rate
Very noisy baseline
Background conduc-
tivity too high
Data of the separa-
tion column cannot
be read.
Individual peaks
greater than expec-
ted
882 Compact IC plus – Anion
Cause
Peristaltic pump – contact
pressure too weak.
Peristaltic pump – filter
blocked.
Peristaltic pump – pump
tubing defective.
High pressure pump – con-
taminated pump valves.
Eluent – Leak in the eluent
path.
Eluent – Blockage in the
eluent path.
High pressure pump –
defective piston seals.
Pulsation absorber not
connected.
Pulsation absorber not
connected. or defective.
Suppressor – not connec-
ted.
Incorrect eluent.
Suppressor – regeneration
or rinsing solution flow
problems.
Column chip contamina-
ted.
Column chip defective.
Sample – carry-over of the
samples from previous
measurement.
Remedy
Correctly set contact pressure (see "Set flow
rate", page 41).
Replace the filter (see Chapter 5.10.2.2, page
72).
Replace pump tubing (see Chapter 5.10.2.1,
page 71).
Clean pump valves (see Chapter 5.5.2, page
57).
Check the eluent path.
Check the eluent path.
Replace (see Chapter 5.5.2, page 57) piston
seals .
Connect pulsation absorber (see Chapter 3.11,
page 33).
Connect pulsation absorber (see Chapter 3.11,
page 33). or replace it.
Connect the suppressor (see Chapter 3.14.1,
page 42).
Change the eluent (see Chapter 5.4.2.3, Page
56).
Check the flow of the regeneration solution
and the rinsing solution.
Clean the contact surfaces of the column chip
(with alcohol).
1. Save column configuration in MagIC Net™.
2. Notify Metrohm Service.
Rinse system longer between two samples.
6 Troubleshooting
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