Operation And Maintenance; General; Injection Valve; Filter - Metrohm Autosampler plus 919 IC Manual

4.1 General

4 Operation and maintenance

4.1 General
4.2

Injection valve

4.3

Filter

1 Tubing olive
3 Filter screw
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Just like highly sensitive measuring instruments, Sample Processors require
proper care as well. Excess contamination of the instrument may result in
functional disruptions and a reduction in the lifetime of the otherwise
sturdy mechanics and electronics of the instrument.
Severe contamination can also have an influence on the measured results.
Regular cleaning of exposed parts can prevent this to a large extent.
Spilled chemicals and solvents must be removed immediately. In particular,
the connector strip (especially the power plug) should be protected from
contamination.
If the injection valve is blocked, then the channels of the valve can be
rinsed with water in the opposite direction. If this is not successful, then
the injection valve must be cleaned by a Metrohm service technician.
The 6.2821.130 filters (17-2) should be replaced every three months and
more frequently with higher backpressure.
1
Figure 17 Pump tubing connection – Replacing the filter
Replacing the filter
1 Unscrewing the filter screw
Unscrew the filter screw from the tubing olive.
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3
2
2 Filter (6.2821.130)
Pack contains 10 pieces.
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919 IC Autosampler plus