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4.1 Verify anti-fouling devices
New sensors have two anti-fouling devices and a yellow protective label installed by the
manufacturer.
Make sure to remove the label before the sensor is deployed or pressurized or the conductivity cell can be
damaged.
1. Remove the yellow label.
• The user can make sure the anti-fouling devices are installed. Refer to "Remove or replace
AF24173 devices" below for details.
2. Keep the label to attach again to protect the intake and exhaust ports when the sensor is not
deployed.
4.2 Remove or replace anti-fouling devices
Remove the anti-fouling devices as a first maintenance task to save the anti-fouling material for
deployments.
1. Use a 5/32 inch hex wrench to loosen the two captured cap screws that attach the copper anti-
fouling assembly to the plastic assembly on the pressure housing. Carefully remove the copper
anti-fouling assembly from the housing.
2. Remove the three Phillips-head screws from the copper anti-fouling assembly, and pull the
copper guard off of the plastic anti-fouling holder.
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