4.6Optional Water Temperature/Speed Sensor
Locknut
Face "notch" toward bow.
Water temperature/speed sensor
Mounting considerations
Flange Nut
Coat with
51
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Choose a suitable mounting location considering the following:
•Choose a place free from vibration.
•Choose a
•Choose a place apart from equipment generating heat.
•Choose a place in the forward direction viewing from the drain hole, to allow for circulation of cooling water.
1.
2.Make a hole of approx. 51 mm diameter in the mounting location.
3.Unfasten locknut and remove the sensor section.
4.Apply
5.Pass the sensor casing through the hole.
6.Face the notch on the sensor toward boat’s bow and tighten the flange.
7.Set the sensor section to the sensor casing and tighten the locknut.
8.Launch the boat and check for water leakage around the sensor.
silicone sealant. Brim
φ 77
Water temperature/speed sensor
4.7 Wiring
Refer to the interconnection diagram to connect cables. Leave slack in cables to facilitate checking and maintenance.
Establishing the ground
The ground wire (1.25sq or more, local supply) should be as short as possible. The ground for the signal line is isolated from the chassis, however the power line is not insulated. Therefore, to connect external equipment whose positive polarity is connected to the ground line, do not connect the signal line ground to chassis ground.
The signal line ground is isolated from the chassis ground, however the power line is not insulated. Therefore, when connecting external equipment having positive ground, do not ground the signal line to the chassis.
If excessive noise shows on the screen, the ground may be inadequate. In this case, attach a steel plate measuring 20 cm by 30 cm on the outside of the hull to provide a ground point. Connect the ground wire
there. Use a “closed” type lug (
) to make the connection at the display unit. Do
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