User manual NORTHSTAR EXPLORER 557

[. . . ] Explorer 557/567 Chartplotter Installation and Operation Manual www. northstarnav. com IMPORTANT SAFETY INFORMATION Please read carefully before installation and use. DANGER !It is used to alert you to potential personal injury hazards, Obey all safety messages that follow this symbol to avoid possible injury or death. WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury CAUTION indicates a potentially hazardous situation which, if not avoided, could result in minor or moderate injury. CAUTION used without the safety alert symbol indicates a potentially hazardous situation which, if not avoided, may result in property damage. [. . . ] Select Name and select the name of the curve to delete. You must make a fuel consumption curve before you can use it (see section 10-6-1). On the Fuel window, press , select Fuel consumption curve and select the name of the curve to use. On the fuel window, press if necessary to select Fuel curve and display the fuel consumption curve. On a multi engine boat, keep the RPM of all engines similar while using a curve. The shape of the curve depends on the type of speed sensor you selected when making the curve (see sections 10-5-1 and 10-5). Compare your boat's performance now, at the current RPMs, with the boat's performance when you made the curve. You can compare your boat's performance now with a curve made under ideal conditions or with a curve made under similar conditions. Information in a curve A B RPM of the boat now. For a twin engine boat, the RPM is the average of the two RPMs. Red curve: boat speeds at different RPMs recorded when you made this fuel consumption curve. This marker is below the red curve, showing that the boat speed now at this RPM is less than when you recorded the curve. 3 1 2 Selecting a curve C 3 Note a b D Blue curve: fuel consumption at different RPMs recorded when you made this fuel consumption curve. E Blue marker: the fuel consumption now. This marker is below the blue curve, showing that the fuel consumption now at this RPM is better than when you recorded the curve. If the blue curve has a dip, then running the boat at this RPM will give the best speed for the least fuel consumption. F 38 Northstar Explorer 557/567 Installation and Operation Manual 10-7 Calibration Calibrate petrol/gasoline fuel flow sensors during installation, or if the fuel readings seem inaccurate and the other troubleshooting suggestions do not help (see appendix B troubleshooting). Note SmartCraftTM fuel sensors are factory calibrated and should never need recalibrating. On a multi engine boat, calibrate each engine's sensor. This can be done at the same time with a portable tank for each engine or at different times using one portable tank. Calibrating a sensor requires accurate measurement of the fuel consumption. This is best done using a small portable tank. At least 4 gallons (15 litres) of fuel should be used to ensure an accurate calibration. It is often very difficult to fill underfloor tanks to the same level twice due to air pockets, so the more fuel used, the more accurate the calibration. To calibrate the sensor(s): 1 2 3 Record the level of the fuel in the tank(s). [. . . ] A navigation tool based on GPS with some errors corrected (see section 7). A feature of marine radios enabling communication between specific vessels, as well as distress alerts. Goto - A simple way of navigating straight to a waypoint or to the cursor position (see section 3-1). A satellitebased navigation tool (see section 7). [. . . ]