Metrohm 858 Professional Sample Processor - Manual (Page 53)

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858 Professional Sample Processor ￭￭￭￭￭￭￭￭ 45
5 Troubleshooting
5.1 Problems and their solutions
Problem Cause Remedy
Marked rise in pres-
sure Injection valve – valve
blocked. Rinse the valve with water in the opposite
direction or have it cleaned (by Metrohm serv-
ice technician).
The Swing Head
either misses the
rack positions
totally or is inaccu-
rate Sample Processor – The
Swing Head is not correctly
configured. Enter the correct values for Swing radius,
Swing offset etc. in the control software
under "Configuration".
Sample Processor – The
axial distance is not cor-
rectly configured. Enter the correct value for Axial distance in
the control software under "Configuration".
Sample Processor – The
wrong rack table is being
used. Initialize the rack using the function Initialize
rack in the "Manual Control" of the control
software.
Peristaltic pump –
insufficient or no
delivery rate Peristaltic pump – contact
pressure too weak. Correctly set the contact pressure .
Peristaltic pump – filter
blocked. Replace the filter .
Peristaltic pump – pump
tubing defective. Replace the pump tubing .
Precision problems -
significant scatter-
ing of the measured
values Injection valve – sample
loop. Check the installation of the sample loop.
Injection valve – defective. Contact the Metrohm Service.