Menu Code 12 - How To Set Submerged Pump Pre-Charge Time - Bennett 3000 Series Operator's Manual

Menu Code 12 - How to Program Submerged Pump Pre-charge Time
The dispenser software is capable of programming the "time delay" circuits for the main con-
trol valves to prevent the leak detector from obtaining a false reading. The submerged pump is
energized as soon as the pump handle is put in the ON position and the fueling position is au-
thorized. The valves remain closed until this time has expired. This allows the underground
piping system a chance to pressurize to check for leakage.
The main control valves can be programmed to energize from 2 to 9 seconds after the start of
the reset cycle. This allows the leak detector time to determine whether or not a leak is present
in the underground piping.
For a standard site, 2 seconds usually works well. For larger sites, such as truck stops, where
there is a lot of underground piping, a larger number is selected. Also, in cold weather climates
in wintertime, the number should be increased since piping pressure tends to dissipate during
long periods between fueling sessions.
If the number set is too short and the leak detector trips, the dispenser will only pump at slow
flow. This is a good indication that this setting must be lengthened.
To program the number of seconds between the time the submerged pump comes on and the
main control valve turns on, follow this procedure:
1. After the Manager's Mode has been accessed, press the number 1 and 2, then the MODE
button on the keypad. See Fig. 1. The PPV display shows the dispenser is in Menu Code 12.
If the dispenser has not been programmed since it came from the factory, the number 2 ap-
pears in the main display. See Figure 2. This is the two second default setting.
2. To change the setting, use the 2 through 9 buttons on the keypad to enter a time delay value
in seconds.
NOTE: If an error is made, press the correct number. The new number replaces the
error.
3. When the correct number appears in the volume display, press the ENTER button to save
the setting.
4. Press the CANCEL button to exit this menu code.
3000 Series Retail Operators Manual 108796 Rev C, 07/05
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Fig. 1
Fig. 2
Fig. 3