Simplex STS DAY TANK, Manual

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Low Level
Alarm
Manual
Operation
Lamp Test
The operator may energize the pump/motor with the Test Fill
pushbutton to test and cycle the Day Tank through the specified
capacity range. When the pump is operated by continuously
holding the Fill Test pushbutton the pump/motor will continue to
run past the normal stop level until 95% capacity is reached, at
which point the pump/motor is de-energized and locked out by
fuel level sensor FS4. The High Level L.E.D. will be illuminated
and the High Level alarm relay will be energized. Contact rated
5A @ 30 VDC, 5A @ 125VAC maximum.
During normal operation, the pump/motor is energized and the
Fill Start L.E.D. is illuminated when the Day Tank fuel level
reaches 50% capacity. If the pump/motor does not energize a low
fuel level alarm will be initiated when Day Tank fuel capacity
reaches the 25% level. The low fuel alarm relay LFR energizes, the
Low Level Alarm L.E.D. is illuminated, and LFR dry contacts
close. The Day Tank user may utilize these contacts to sound an
alarm horn or provide an input to a remote annunciator. Contacts
are 5A @ 30VDC, 5A @ 125VAC maximum.
For manual (continuous run) operation, the Day Tank operator
must place the Day Tank mode selector toggle switch in the
Manual position. Manual operation allows the Day Tank operator
to energize and run continuously the pump/motor independent of
fuel level sensors FS1-FS3. During manual operation the control
panel L.E.D. lamps will continue to annunciate fuel level to the
Day Tank operator. The Day Tank will continue to fill until 95%
capacity is reached at which time the High Level mode will be
initiated. The Day Tank pump/motor will be de-energized and
locked out until Day Tank fuel level is reduced to 90% capacity
and fuel level sensor FS3 changes state. Until the alarm condition
is corrected and the control circuitry is reset to Auto the Day Tank
pump/motor will continue to cycle between the 90% and 95%
levels. Upon return to Auto, the control circuitry is reset and the
pump/motor will resume normal operation and cycle between 50%
and 90%.
The momentary Fill Test pushbutton is also used to test L.E.D.
lamps on the control board. To use this feature, press and hold the
Fill Test pushbutton to illuminate the L.E.D. lamps. If desired, the
lamps may be tested without filling the tank further by placing the
mode switch in the “Off” position before pressing the Fill Test
pushbutton.
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