Flow-Cell Maintenance - Hach 2100N Instruction Manual

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SECTION 5,
continued

5.4 Flow-Cell Maintenance

Note: Always test the system for
leaks before inserting the Flow Cell
into the turbidimeter.
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Periodically clean the Flow Cells for the low- and high-pressure kits. Disassemble
the cells and clean the glass parts as described in Section 2.5.1 on page 22. Air dry
the parts after cleaning. Clean plastic parts and tubing with laboratory detergent
and warm water. Periodically replace plastic tubing because contaminants,
including microbiological growths, are difficult to remove from the inside surface
of the small-bore tubing.
Coat the outside surface of the glass, Flow-Cell parts with a thin film of silicon oil
before installation in the instrument (see Section 2.6.1 on page 23).
Fill the system with distilled or deionized water when it is not used for short
periods of time (a few hours). This minimizes air locks and build up of residue on
the components. Always disassemble, thoroughly clean, and air dry all
components before long-term storage.
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