Metrohm 858 User Manual

5.1 Problems and their solutions
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858 Professional Sample Processor
5 Troubleshooting
5.1 Problems and their solutions
Problem Cause Remedy
The pressure in the
system markedly
increases.
Injection valve – Valve
blocked.
Rinse the valve with water in the opposite
direction or have it cleaned (by Metrohm ser-
vice technician).
The Swing Head
either misses the
rack positions totally
or is inaccurate
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.
The peristaltic pump
is pumping too little.
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 -
the measured values
are highly scattered.
Injection valve – Sample
loop.
Check the installation of the sample loop.
Injection valve – Defective. Contact Metrohm Service.

Metrohm 858 Specifications

General

Brand	Metrohm
Model	858
Category	Laboratory Equipment
Language	English