In-Situ Aquaculture Buoy Manual (purchased before 28 May 2013) - Manual (Page 28)

28 Care and Storage
conditions. Replace as necessary. These tablets are available
anywhere swimming pool supplies are sold.
6.3.4 Cleaning the Sensor Cap
If extensive fouling of the sensor occurs, remove the buoy from the
pond and complete the following steps:
Note: Do not use organic
solvents—they will damage
the sensor cap Do not
remove the cap from the
sensor prior to brushing. 1. Leave the cap and nose cone on the sensor!
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 min., then soak in deionized water for 15 min.
5. After cleaning the sensor, perform a 1- or 2-point user calibration or
calibration check.
6.3.5 Cleaning the Sensor Body
With the sensor cap installed on sensor, gently scrub sensor body with
a soft-bristled brush or nylon dish scrubber. Use Alconox to remove
grease or other matter. Soak in vinegar and deionized (DI) water to
remove mineral deposits or extensive fouling as described above.
6.3.6 Replacing the Sensor Cap
The sensor cap has a 1-year life after the sensor takes its first reading.
Replacement caps are available from In-Situ Inc. or your authorized In-
Situ distributor.
1. Remove the sensor nose cone.
2. Pull the used sensor cap off of the sensor, without twisting.
3. Remove the existing O-rings from the sensor.
4. Use a lint-free cloth to remove any moisture from the sensor body.
Ensure that there is no moisture in the O-ring grooves. Avoid
touching or cleaning the lens with anything other than the supplied
lens wipe.
5. Use your finger to apply a very thin layer of lubricant around the O-
ring grooves.
Note: Do not transfer
grease to the lens or sensor
pins. 6. Place the O-rings on the sensor. Apply another thin layer of lubricant
to the O-rings and grooves.
7. Clean the lens on the sensor with the wipe provided in the kit and
allow to dry thoroughly. Inspect for scratches or dirt.
8. Remove the new cap from its sealed packaging and attach it to the
sensor, being careful to press firmly, without twisting, until it seals
over the probe body. Make sure that the O-rings are not pinched or
rolled between the cap and sensor.