Bennett 3000 Series Service Manual page 20

Electronically Calibrating the SB-100 (Standard Flow) and
FPP (High Flow) METER (E-CAL)
How to set the Electronic Calibration - Electronic calibration is a
simple method to calibrate the meters in the dispenser. Electronic
calibration is the same for either the standard flow SB-100 meter or the
high flow FPP meter. This method uses a mathematical algorithm in
the software to account for meter wear rather than mechanical methods
to limit the piston throw within the meter..
This method also eliminates the parts associated with mechanical
calibration in the meter. The result is a more symmetrical meter that
will be intrinsically more accurate.
Follow these steps to electronically calibrate the meter:
Step 1 - Pump 5 gallons as displayed on the dispenser display into your
test can. Make sure to stop pumping at exactly 5.000 gallons.
Step 2 - Read the plus / minus value in the test can.
Step 3 - Unlock and open the electronics door on the side with the
meter that you want to calibrate (See Figure 1). IMPORTANT - Make
sure you are calibrating the correct meter! (See Figure 2). To make
sure, locate the meter you are working on and the valve that is
connected to it. Follow those valve wires to the correct CPU/Control
Board to ensure you are electronically calibrating the correct meter.
With the power on, locate the electronic calibration switch on the top of
the CPU/Display board (mounted to the door) See Figure 3.
Step 4 - Break the seal and move the switch to the calibrate position.
Close the door and you should see the display read the current
calibration value.
Step 5 - Press the "Enter" button along the top edge of the CPU/Display
board. See Figure 4. Figure 4 shows that there are 3 buttons nest to the
electronic calibration switch. The functions of the buttons are "Enter",
"Up", and "Down". You will be using these buttons to enter electronic
calibration data.
Fig. 1 - Open the upper door.
Fig. 2 - Follow the valve wires
from the meter you are cali-
brating to make sure you are
calibrating the correct meter.
Fig. 3 - Remove the seal and
turn the ecal switch "ON".
Fig. 4 - "Enter", "Up" and
"Down" keys used to input da-
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ta.
107932 Rev G 4-24-17