User manual NORTHSTAR EXPLORER 467

[. . . ] Explorer 457/467 Fishfinder 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. [. . . ] A When you completely fill a tank Go to the fuel window and press Then: On a single-tank boat, select Fill tank. On a multi-tank boat, select Fill tank, then select the tank you have filled. Note: Underfloor fuel tanks are often difficult to refill to the same level twice, due to air pockets. With underfloor fuel tanks: Trim the boat to the same angle in the water each time you follow procedure A. Mostly use procedure B below when adding fuel, but completely fill the tank and follow procedure A about every tenth time you add fuel. B When you partially fill a tank 1 2 3 4 Add fuel to a tank and write down how much fuel you add. and On a multi-tank boat, select the tank that you have added fuel to. Change the number to the amount of fuel that you added. 31 Northstar FISH 457/467 Installation and Operation Manual Note: If you follow procedure B every time you add fuel, then a small error will accumulate, because it is hard to measure exactly how much fuel you add. To avoid this, completely fill the tank and follow procedure A about every tenth time you add fuel. Before removing fuel, go to the Fuel window, press and select Set remaining. On a multi-tank boat, select the tank that you are removing fuel from. Write down the value of Remaining for the tank; this is the amount of fuel originally in the tank. Remove fuel from the tank and write down how much fuel you remove. 5. Subtract the amount of fuel you removed from the amount of fuel originally in the tank to calculate the amount of fuel now in the tank. Change the number on the Set Remaining menu to the amount of fuel that you calculated was now in the tank. Press Note: You can also use this procedure when you add fuel to a tank. In this case, add the fuel you have added to the amount of fuel originally in the tank to calculate the amount of fuel now in the tank. 7-4 Low fuel alarm To set a low fuel alarm for a tank: 1 2 3 Press twice, select Fuel then select Setup tanks. Select Tank alarm and enter a fuel level to trigger the low fuel alarm. When a low fuel alarm is set, the alarm's fuel level is shown on the fuel window tank levels as a red bar. The alarm can also be set using the Alarms setup menu (see section 8-5) 7-5 Boat speed sensors 7-5-1 Selecting a boat speed sensor The fuel calculations can use boat speeds from the paddlewheel sensor, or from a GPS or pitot sensor if these optional sensors are installed: Paddlewheel and pitot sensors measure the speed through the water; GPS speed is speed over ground; these sensors can give different values for Range, Economy and the fuel consumption curves (see section 7-5-2). A pitot sensor is more accurate than a paddlewheel sensor at high speeds but is not accurate at low speeds. A paddlewheel sensor is more accurate than a pitot sensor at low speeds. [. . . ] Manual Gain may be set too low, which may cause weak bottom echo or no fish signals. Ensure the back of the bottom surface of the transducer is slightly lower than the front and the front is as deep in the water as possible in order to minimize the generation of bubbles through cavitation. (See the Transom Transducers Installation Guide) Check the transducer and power cable connectors at the back of the display unit are securely plugged in and the collars are locked in place. Inspect the power cable from end to end for damage such as cuts, breaks, squashed or trapped sections. [. . . ]