TD80™ Level Gauging and Overfill Prevention System Product Manual
Page 12 TD80 Introduction/ Rev. 2, August 4, 2015
c. The Solenoid continues to be energized to allow loading.
d. The Finch Display flashes the level indication to indicate the active Fill
alarm.
The operator then presses either the Up or Down button on the Finch to
silence the horn, turn off the Red light and return to a normal level display.
The operator continues to load. He will likely manually shut off the pump and
close the valve before the liquid level reaches the HH alarm level. If he does
not and the liquid level reaches the HH alarm level, then the following occurs:
a. Green light turns off
b. The solenoid de-energizes, closing the bottom loading valve or opening
the on-board pump bypass valve. This halts the loading process.
If the tank has been loaded to the required amount, then the operator turns
off the pump, closes the valve, disconnects the hoses and drives away.
If the tank has not been loaded to the required amount, then the operator
clears the HH alarm on the Finch with the UP/UP/DOWN/UP button
sequence. This resets the alarm response and allows further loading with the
following:
a. The Green Light turns back on
b. The Solenoid is re-energized
c. The Solenoid either opens the bottom loading valve or closes the on-
board pump bypass valve to allow loading to continue.
The operator is likely to stop loading before the level reaches the Spill alarm
level.
If the operator continues to load and reaches the Spill alarm level, the
following occurs:
a. Green Light turns off
b. The Solenoid is de-energized
c. The de-energized solenoid either closes the bottom loading valve or
opens the on-board pump bypass valve to halt the loading process.
The operator cannot reset or acknowledge the Spill alarm. The liquid must be
pumped out of the tank until it drops several inches below the HH alarm
level. The Spill alarm then clears and enables loading through a bottom
4. PTO Disengaged
When the operator has completed the loading procedure, he turns off the
PTO. This deactivates the Finch alarms, displays “OFF” and prevents the
solenoid from energizing to disable loading through a bottom loading valve or
a bypass valve on a hydraulic motor.
He now drives to a new location to load or unload.
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