Metrohm 850 Professional IC AnCat - Manual (Page 107)

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
5 Troubleshooting
850 Professional IC – AnCat
￭￭￭￭￭￭￭￭ 97
Problem Cause Remedy
MSM – regeneration or
rinsing solution flow prob-
lems. Check the flow of the regeneration and rinsing
solution (see Chapter 2.16.2, page 47).
Data of the separa-
tion column cannot
be read. Column chip contamina-
ted. Clean 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.
MSM – No (or insuf-
ficient) pumping of
regeneration or rins-
ing solution Leak in the system. Check connections.
Peristaltic pump – contact
pressure too weak. Correctly set contact pressure (see "Set flow
rate", page 54).
Peristaltic pump – filter
blocked (see Figure 29,
page 52). Replace the filter (see "Replacing the filter",
page 91).
MSM – backpressure too
high. Clean the MSM (see Chapter 4.11.3.2, page
85) or replace parts (see Chapter 4.11.3.3,
page 88).
Peristaltic pump – pump
tubing defective. Replace pump tubing (see Figure 28, page 51).
Poor reproducibility
of the retention
times Eluent – Leak in the eluent
path. Check the eluent path.
Eluent – Blockage in the
eluent path. Check the eluent path.
Chromatograms
have poor resolution Separation column –
diminished separating effi-
ciency. ￭ Regenerate separation column (see Chap-
ter 4.14.4, page 93).
￭ Replace separation column (see "Connect-
ing and rinsing the separation column",
page 61).
Conductivity detec-
tor is not recognized
in the software No connection.
￭ Check the cable connection (32- 1 ).
￭ Turn the instrument off and on again (after
15 seconds).