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CHAPTER 3 - OPERATING INSTRUCTIONS
T
he display is the only system component that is accessed by
the user. All user input to the display is done using the three
buttons along the bottom of the display. Operation of the display
is as follows
To read a water or sewer tank level:
1. Press the button corresponding to the tank to be checked and
release it, the display will show the level in percent on the LED
display. If no other button is pressed, then the display shut off
after about 5 seconds.
2. If another button (including BATT) is pressed before the
5 second time is up for the first button, the display will
immediately switch to showing the new level or voltage. The
5 second timeout is restarted every time a button is pressed.
3. To continuously display a reading, press and release the
desired button, and then press the same button a second
time. When the button is released, the display will be in hold
mode, which is indicated by the decimal point on the right
hand side turning on. While the display is in the hold mode it
will recheck the level once per second so the user can watch
the level change while the tank is being filled or drained. The
display will automatically shut off after 5 minutes in hold
mode. To end the hold mode before the 5 minutes is up,
press any tank button, and the display will shut off.
To read the battery voltage:
1. Press the BATT button and release it, the display will show the
battery voltage on the LED display.
2. If no other button is pressed, then the display will shut down
after about 5 seconds. If the BATTERY button is held down,
the display will continuously recheck the voltage and show
the updated value. The reading may flicker back and forth
between two values, for example, 12.6 and 12.7 volts. This is
normal behavior for a digital voltage display.
3. If another button is pressed before the 5 second time is up
for the BATTERY button, the display will immediately switch to
showing the value for the new button. The 5 second timeout
is restarted every time a button is pressed.
4. There is no hold mode for the battery voltage.
Page 6
709-LL Manual
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