Furuno GP-1870F Marine GPS System User Manual


 
13. INSTALLATION
13-12
7. Apply marine sealant to the threads of the #6 x 1/2” self-tapping screw to prevent
water from seeping into the transom. If you have drilled a hole through the tran-
som, apply marine sealant to the space around the cable where it passes through
the transom.
8. Position the two cable clamps and fasten them in place. If used, push the cable
cover over the cable and screw it in place.
9. Route the cable to the display unit being careful not to tear the cable jacket when
passing it though the bulkhead(s) and other parts of the boat. To reduce electrical
interference, separate the sensor cable from other electrical wiring and "noise"
sources. Coil any excess cable and secure it in place with zip-ties to prevent dam-
age.
13.4 Installation of Sensors (option)
13.4.1 Speed/temperature sensors ST-02MSB, ST-02PSB
The speed/temperature sensors (ST-02MSB, ST-02PSB) are designed for thru-hull
mounting. Install them as shown in this section.
Mounting considerations
Select a suitable mounting location, considering the following:
Mounting procedure
1. Dry-dock the boat.
2. Make a hole of approx. 51 mm diameter in the mounting location.
3. Unfasten the locknut and remove the sensor section.
4. Apply silicone sealant to the flange of the sensor. The height of the coat should be
approx. 6 mm.
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.
Select a location where the transducer will not be damaged in trailering, launching,
hauling, and storage.
Select a mid-boat flat position. The sensor does not have to be installed perfectly per-
pendicular.
Select a location in the forward direction viewing from the drain hole, to allow for cir-
culation of cooling water.
Select a location away from water flow from keel, water discharge pipe, etc.
Vibration at the location shall be minimal.
Do not install fore of the transducer of a fish finder, to prevent disturbance (and loss of
performance) to the fish finder.