Metrohm 881 Compact IC pro – Anion - Manual (Page 102)

6.1 Problems and their solutions
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881 Compact IC pro – Anion
Problem Cause Remedy
Sample – blockage in the
sample path. Check the sample path.
Sample – sample loop not
(completely) filled. Prolong the sample transfer time.
Peristaltic pump –
insufficient or no
delivery rate Peristaltic pump – contact
pressure too weak. Correctly set contact pressure (see "Set flow
rate", page 49).
Peristaltic pump – filter
blocked. Replace the filter (see Chapter 5.10.2.2, page
80).
Peristaltic pump – pump
tubing defective. Replace pump tubing (see Chapter 5.10.2.1,
page 79).
Very noisy baseline High pressure pump – con-
taminated pump valves. Clean pump valves (see Chapter 5.5.2, page
65).
Eluent – Leak in the eluent
path. Check the eluent path
Eluent – Blockage in the
eluent path. Check the eluent path
High pressure pump –
defective piston seals. Replace (see Chapter 5.5.2, page 65) piston
seals .
Pulsation absorber not
connected. or defective. Connect pulsation absorber (see Chapter 3.12,
page 36). or replace it.
Background conduc-
tivity too high Suppressor – not connec-
ted. Connect the suppressor (see Chapter 3.16.1,
page 50).
Incorrect eluent. Change eluent (see Chapter 5.4.2.3, page 64).
Suppressor – regeneration
or rinsing solution flow
problems. Check the flow of the regeneration solution
and the rinsing solution.
Data of the separa-
tion column cannot
be read. Column chip contamina-
ted. Clean the contact surfaces of the column chip
(with alcohol).
Column chip defective. 1. Save column configuration in MagIC Net™.
2. Notify Metrohm Service.
Individual peaks
greater than expec-
ted Sample – carry-over of the
samples from previous
measurement. Rinse system longer between two samples.