In-situ RDO PRO-X, Operator'S Manual, Page: 12 / 29

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Care and Maintenance
Clean the Sensor Cap
1. The cap and nose cone must remain on the probe.
2. Rinse the sensor with clean water from a squirt bottle or spray bottle.
3. Gently wipe with a soft-bristled brush or soft cloth if biofouling is present. Use Alconox to remove grease.
4. If extensive fouling or mineral build-up is present, soak the cap end in vinegar for 15 minutes, then soak in
deionized (DI) water for 15 minutes.
Do not use organic solvents—they will damage the sensing element. Do not remove the cap
from the sensor prior to cleaning.
5. After cleaning, perform a 1- or 2-point user calibration or calibration check.
Clean the Optical Window
1. Clean the optical window only when you change the cap. See full instructions in the sensor cap replacement kit.
2. Remove the cap and gently wipe the lens with the supplied lens cloth.
Do not wet the lens area with water or any solution. Use only the supplied lens cloth for
cleaning. Do not use any other cloth or material.
Clean the Probe
With the RDO cap installed on probe, gently scrub the probe with a soft-bristled brush or nylon dish scrubber. Use Alconox to
remove grease or other matter. Soak in vinegar and DI water to remove mineral deposits or extensive fouling.
Sensor Cap Storage
Prior to installation—Store in factory supplied container.
Installed—Store in the calibration chamber with the storage cap attached and a few drops of clean water.
Replace the Sensor Cap
1. Remove the probe nose cone.
2. Use a lint-free cloth to remove any moisture from the probe.
3. Pull the used RDO cap off of the sensor, without twisting.
4. Remove the existing O-rings from the sensor.
Ensure that there is no moisture in the O-ring grooves. Do not touch or clean the lens with
anything other than the supplied lens wipe.
5. Use your finger to apply a very light layer of silicone-based lubricant around the O-ring grooves.
6. Place the O-rings on the sensor. Apply another thin layer of lubricant to the O-rings and grooves.
Note: Do not transfer grease to the lens or sensor pins.
7. Clean the sensor lens with the wipe provided in the kit and allow it to thoroughly dry. Inspect for scratches or dirt.