Introduction – YSI ProDSS User Manual
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Introduction
Sensor removal
To remove a sensor, insert the sensor installation/removal tool into the retaining nut, then rotate the retaining nut
counterclockwise to loosen. After the retaining nut has been completely unscrewed from the bulkhead, pull the sensor
straight out of the port and place it on a clean surface.
NOTICE: Install a port plug if not reinstalling a sensor in the exposed port. Exposure to water can cause
damage or corrosion to the bulkhead connectors not covered by the warranty.
Port plugs
Figure 5 Port plugs
1 Shipping dust cover*
2 Port plug
*Color shown for reference
To protect the bulkhead connectors from damage, install a port plug into any port without an installed sensor. Port
plugs and a tube of o-ring lubricant are included in the maintenance kit that ships with all ProDSS cables. Refer to the
accessories section if an additional maintenance kit is needed (
NOTICE: The shipping dust covers installed on the bulkhead when purchased (not sensor installation/removal
tool compatible) are not o-ring sealed and must be replaced with a port plug before field use.
NOTICE: Do not submerge the bulkhead without a sensor or port plug installed in all ports.
Installation
1. Apply a thin coat of Krytox o-ring lubricant to the o-rings on the plug port.
2. Remove any excess lubricant from the o-rings and port plug with a lint-free cloth.
3. Insert the port plug into the empty port and press until firmly seated.
4. Finger-tighten the port plug clockwise to install. If necessary, use the sensor installation tool to make sure that
the plug is fully seated into the port.
NOTICE: The o-rings will not be visible if a port plug is correctly installed.
NOTICE: Do not over-tighten the port plug. Over-tightening can cause damage to the port plug or bulkhead
not covered by the warranty.
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