Examine The Replaceable Parts - Hach AF7000 SCM Manual Básico Del Usuario

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Post-requisites:
1. Apply power to the instrument.
2. Let the reading become stable.
3. Set the zero point.

Examine the replaceable parts

Worn parts can cause poor sensitivity and frequent drifts in the zero point. To examine the parts,
refer to
Clean the sensor
on page 17 and the illustrated steps that follow. Look for signs of wear:
• Piston—deep scratches or scores.
• Cam rod to piston linkage—too much movement when the piston is pushed up and down.
• Linear bearings—too much movement when the piston is pushed side to side.
• Sensor—deep scratches or scores.
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