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Hach EZ4004 Manuel D'utilisation Simplifié page 29

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Figure 10 Analysis vessel
1 Analysis vessel
9.9 Clean the drain tubing
Make sure that the external drain tube does not have a blockage. Clean if necessary.
9.10 Replace the peristaltic pump tubing
The peristaltic pump is used to:
• Drain and rinse the analysis vessel.
• Add the cleaning and validation solution and the sample.
• Remove the excess of sample when used as a leveling system.
The peristaltic pump has a motor and a peristaltic pump head. Replace the peristaltic pump tubing
regularly for the best analyzer performance. Refer to the illustrated steps that follow.
Note: When the procedure is complete, set the pump to on to make sure the pump operates correctly.
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