Hach DR300 - Replace the Optical Unit

5.2 Replace the optical unit
Items to collect:
• Optical cup
• Retaining springs (2x)
• Lens
• Retainer detector
• Detector clip
• Detector (IC converter light to frequency)
• Aperture
• Interference filter
• Housing for LED
• LED white
• O-ring
• Wire cutter
Repairs
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