Lowrance electronic LMF-400 manual

To execute 3-Point Calibration: there will be three options in the 3-point

calibration menu: Empty Level, Half Level and Full Level. 3-point calibration is designed for tanks that vary in shape from the top to the bottom, leading to an inaccurate fuel level sensor reading, in the narrower, bottom portion of the tank.

1.Choose the level (EMPTY, HALF OR FULL LEVEL) that corresponds with your tank's current fuel level and press ENTER. If you choose half level, the following message will appear: Calibrating Set Tank to Half Level Press Enter.

2.Press ENTER and you will be taken back to the 3-point menu.

3.Press EXIT to return to the Bus Devices list.

To execute 5-point Calibration: there will be five options in the 5-point

calibration menu: Empty Level, 1 Qtr Level, Half Level, 3 Qtr Level and Full Level. 5-point calibration is designed for the most uniquely formed tanks that vary greatly in shape from top to bottom, making an accurate fuel level sensor reading impossible without calibration.

1.Choose the level (EMPTY, 1 QTR, HALF, 3 QTR or FULL LEVEL) that corresponds with your tank's current fuel level and press ENTER. If you chose 3-quarter level, the following message will appear: Calibrating Set Tank to 3 Qtr Press Enter.

2.Press ENTER and you will be directed back to the 5-point menu.

3.Press EXIT to return to the Bus Devices list.

Fuel Flow

If using the EP-10 Fuel Flow as the Fuel Remaining source, you must tell the unit when you add fuel or fill the tank. If just adding fuel, but not topping off the tank, use the PARTIAL FILL option and enter the amount of fuel added.

WARNING:

Be sure to carefully follow these instructions, otherwise fuel calibration could be inaccurate, resulting in incorrect Fuel Flow, Fuel Remaining, Fuel Economy and Fuel Range readings.

If you are topping off the tank, but do not want or need to calibrate the unit, select the FILL TANK option and choose NO on the Calibrate option. To calibrate the EP-10 Fuel Flow, you must use the Refill Tank option.

1.First, fill up the vessel's tank, but do not recalibrate, just input that the tank has been refilled.

2.Once you have burned at least 5 gallons of fuel, fill up the tank again, carefully noting how much fuel was added to top off the tank. The amount of fuel added should be very close to the amount of Fuel

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