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.ELECTRONIC FUEL LEVEL
.GAUGE
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This is a graphical gauge that represents an electronic measurement of the usable
fuel level in the tank. It may be viewed as either percent full or gallons remaining.
The 100% or FULL level is normally set to the Fill Pump shut off level (not the
physical top of the tank); the EMPTY level of the gauge is normally set to the bottom
of the tank.
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.POWER AVAILABLE
."LIGHT"
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This green annunciator light is used to report that power is on and the Evolution
system is energized. It does not imply the system is functioning properly (the
Evolution system performance is reported by the System Ready “Light”).
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.HOA SWITCH
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This is actually a series of three switches per pump motor that function as an HOA
switch in an OFF, ON and AUTO position. In an ON position, EVOLUTION SYSTEM
surrenders control of the pump motor except actions at the specified control points --
Critical High, High Fuel, Low Fuel, and the Critical Low fuel levels. In the AUTO
position, the EVOLUTION SYSTEM automatically controls the activities of the motors
based upon fuel level readings and control points.
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.ALARM SILENCE SWITCH
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This switch is used to turn off an installed alarm horn that is sounding as an
abnormal condition exists. (The horn will shut off automatically when the condition is
corrected.) This is welcome relief to workers who are correcting the problem.
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.CRITICAL HIGH FUEL
.LEVEL NOTIFICATION
FEATURE
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This standard feature is always installed. It acts as a mechanical fail-safe to prevent
flooding should an electronic fault occur preventing the Fill Pumps/Motors from
shutting off at the specified level.
The Critical High Level is always set to 3.0” down from the top of the tank. It will
always shut off all Fill Pump/Motors (internally controlled by EVOLUTION SYSTEM).
Two sets of Dry Contacts are provided: one Normally Open (N.O). and one Normally
Closed (N.C.). A normally open solenoid valve in the intake line is provided. The
customer must supply external power for any remote alarms/lights.
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.HIGH FUEL LEVEL
NOTIFICATION
.FEATURE
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This standard feature is always installed. In its basic setup, when the fuel reaches a
specified “high” level, it will turn on a High Fuel Light/Alarm. Optionally, as a safety
feature, EVOLUTION SYSTEM can be programmed with a “Shut Fill Pump(s) Down”
feature.
The High Fuel Level is normally set to 3.5” down from the top of the tank.
Additionally, two sets of Dry Contacts are provided, (1 - N.O. and 1 - N.C.). The
customer must supply external power for any remote alarms/lights.
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.LOW FUEL LEVEL
.NOTIFICATION
.FEATURE
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This standard feature is always installed. When the fuel reaches a specified “low”
level, it will turn on a light on the control panel and will shut off any installed Reverse-
Flow Pumps/Motors.
Low Fuel Level is normally set at predetermined distance from the top of the tank.
These settings are:
Py5 & PY15 ……….. 7.5”
Py25 - PY150 …..... 9.5”
Py200 - PY1000 ….. 13.5”
Two sets of Dry Contacts are provided, (1 - N.O. and 1 - N.C.). The customer must
supply external power for any remote alarms/lights.
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.CRITICAL LOW FUEL
.LEVEL NOTIFICATION
.FEATURE
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This option is to prevent the emptying of the tank due to abnormal engine draw-
down or reverse flow. It turns on an alarm condition and when wired to the ignition
switch of the generator engine, will shut it off to prevent loss of prime and possible
damage.
The Critical Low level is normally set to 3.5” up from the bottom of the tank.
Two sets of Dry Contacts are provided, (1 - N.O. and 1 - N.C.) to connect external
alarm devices (N.O.) and to turn off the power to the engine ignition. The customer
must supply external power for any remote alarms/lights.
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.SECONDARY
.CONTAINMENT DETECTION
.ALARM NOTIFICATION
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This is a standard feature that is activated when secondary containment is
purchased. It will annunciate on the control panel and activate an alarm.
Additionally, two sets of Dry Contacts are provided (1 - N.O. and 1 - N.C.) for remote
annunciation. The customer must supply external power for any remote
alarms/lights.
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.DISCRETE NORMALLY
.OPEN CONTACTS FOR
.ALL ALARMS
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.HISTORICAL LOG
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