2.2.1. Sampling needle
Sampling needle is assembled in the H&V moving unit and it makes the sample aspirations.
Correct setting of sampling needle is necessary and very important (see Chapter
Adjustments).
2.2.2. Washing head
Washing head is located at the bottom of the H&V moving unit and it is for cleaning the outer
surface of the sampling needle. This washing process is made with diluent reagent and the
fluid is drained by the pump. The arrows on the picture show the direction of diluent flow
during sampling needle washing.
Clean or replace washing head yearly, or after 10 000 measurements.
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