How To Replace The Sacrificial Water Switch - Simrad PI44 Operator's Manual

850-165085 / Rev.B

How to replace the sacrificial water switch

All PI and PS sensors are equipped with a water switch, and two
different types are used. If your sensors are equipped with a
brass screw, observe the following procedure for replacement.
1 Turn the sensor upside down, and locate the brass screw.
2 Inspect the screw for wear and tear. If required, replace
the screw.
A standard commercial brass screw is used. Local supply will
normally be available, but the following specifications must be
met:
Brass, Size M5x10, DIN85A, rounded head
Before a new screw is inserted, Aqua Shield (or a similar
underwater lubricant) must be applied. Due to the size of the
tube, we recommend that the grease is applied from a syringe.
1 Apply Aqua Shield to the screw threads.
2 Insert the screw, mount firmly, but not too hard.
3 Use maximum torque 1.5 NM
A pack with ten screws and a tube of Aqua Shield can be
ordered from Simrad as a spare parts kit.
Aqua Shield is manufactured by D.A.Stuart, Warrenville,
Illinois, USA (www.d-a-stuart.com).
Operational procedures
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