PerkinElmer Wallac 1420, Руководство пользователя

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Appendix 3: Dispenser operation
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Avoid touching the needles with your fingers. To clean the needles use e.g. a stick with a tip
of soft material dipped in ethanol, or use a spray bottle filled with ethanol. Be very gentle
when touching the needles so that they are not bent out of shape. Rinse with water.
The position of the needles is very critical for high quality performance. If a needle is bent,
call the service engineer to get the needle replaced.
Do not try to re-adjust the damaged
needle because the quality of dispensing could be affected . Both the needle and the tubing
will be replaced as a set.
It is good to check the flow of liquid dispensed (during flushing). If the flow is not normal it
might indicate that the needle is partly blocked. If this has happened due to dried reagents,
use water and e.g. ethanol to dissolve the plug. If that does not help, the needle needs to be
changed; contact the service.