Hach-Lange LDO Sensor Replacement Kit - Manual (Page 4)

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LDO™ Sensor Replacement for LDO101 Probes, continued
4. Position the new cap seal on the probe body with the narrow shoulder of
the seal facing the probe tip ( Figure 1 ). Slide the seal until it rests against
the probe body threads.
5. Place the new O-ring into the groove at the sensor tip ( Figure 1 ). Do not
touch the sensor lens.
Note: If the sensor lens is soiled, rinse with dilute isopropyl alcohol or deionized
water and blot completely dry. Do not wipe the lens or use abrasive cleaners.
6. Finger-tighten the new sensor cap onto the probe until the seal is
compressed. Do not over-tighten. The cap will push the seal over the
threads and into position (
Figure 1 ). Do not touch or soil the sensor lens.
Note: Avoid handling the black face of the sensor cap. DO NOT use alcohol or
other organic solvents to clean the black face of the sensor cap. These solvents
will destroy the sensor cap.
7. Inspect the cap seal to make sure the narrow shoulder of the seal is
inside the cap.