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.OPTION #706 - CRITICAL
LOW LEVEL ALARM
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Activates red light on control panel, provides signal for remote annunciation and
engine shut down (prevents loss of engine fuel prime).
This option is to prevent the emptying of the tank due to abnormal engine draw-down
or reverse flow, or a leak. 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.
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The Critical Low level alarm point 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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.OPTION #727 - DUPLEX
.FILL PUMP and MOTOR
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A secondary "lag" pump/motor system used to back-up primary "lead" pump/motor.
Normally the lead pump/motor begins operation at 86% usable fuel capacity; the lag
system begins at 82%. Both systems turn off at 100% capacity. (This is an addition
to standard pump and motor.)
This secondary pump/motor (also refered to as Pump #2) has its own set of "HOA
switches as well as a "turn ON" level, pump running LED, and a pump fail LED/reset
switch. It will however, turn OFF at the same level as Pump #1 (the standard Fill
Pump/Motor).
Pump #2, in its basic setup, is always in a "lag" position, i.e., it will only turn ON when
the fuel level has dropped past a point where it has been determined that Pump #1
cannot keep up with the draw-down of the generator. The Alternation of Duplex
Pumps option (Option Code 727A) explained below will override this permanent "lag"
assignment.
If Alternation of Duplex Pumps option is not installed, Pump #1 is always referred to
as the Primary Fill Pump and Pump #2 is the Secondary Fill Pump
NOTE - We custom-set all level setting to your exact requirements at no additional
cost.
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.OPTION #727A - DUPLEX
.FILL PUMP and MOTOR
.w/AUTOMATIC LEAD/LAG
.ALTERNATION
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An Option 727 (above) with a switch to automatically alternate each pump/motor into
the lead starting position.
If the fuel supply system has been designed correctly and the "lead" pump/motor
(Pump #1) has been sized to match the demands of the generator, and no unusual
condition or problem arises, it is conceivable that the "lag" pump/motor (Pump #2) will
never or very seldom see action. This "alternation" option switches the lead/lag
assignment of each pump/motor in an attempt to equalize the run time.
When a pump motor is cycled into lead position, it is assumes the title as the Primary
Pump, whereas, the lag pump/motor is the Secondary. This does not change the fact
that the secondary pump will back up the primary at a predetermined level.
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.734 SERIES - COVERS
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The FCM has its own NEMA-1 enclosure to protect its components. This is an
additional enclosure providing protection for the pump/motor system(s) and other
non-FCM components.
NOTE - Option #734A is the code for a single pump and motor; #734B is for a duplex
system; #734C is for a triplex system; and #734D is for a quadplex sysyem.
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.OPTION #773 - PUMP(s)
.FAIL DETECTION
.w/AUTOMATIC and
.MANUAL RESET
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This option includes the control panel switch, an in-line flow switch, and other
required items necessary to detect, report, and reset a "no fuel in line" condition (one
per pump). A flow switch, option #372, is required.
This option works in conjunction with an optional #372 Flow Switch to report a "no
fuel present" condition in the fuel line from the main storage tank. Without this option,
there is a possibility of the pump losing its prime or running dry (which will eventually
cause pump damage).
When a pump/motor starts, there is a approximate 10 second delay to give the line
time to get charged with fuel, if not already filled. After this delay, the FCM will initiate
failure testing based upon a possible signal from the flow switch. If a "no fuel in line"
condition is received, the FCM enters another approximate 10-second delay to
validate the condition. After the second delay and "no fuel" condition still exists, the
FCM determines that a failure has occurred and takes the following actions:
- shuts off pump/motor
- lights the appropriate LED (solid)
- sounds a horn, if installed.
- makes note of the "failed" pump intended action, i.e., the position of the HOA
switch, "ON" or "AUTO"
If the FCM is programmed to restart manually, it will wait for the operator to press the
Reset switch to repeat the start-up process.
Optionally (no charge), it is possible to allow the FCM to attempt to restart the
pump/motor automatically (after the 10 + 10 delay when the motor was shut off). If the
option is set to Auto-Restart and a specified time (1 to 240 minutes) has elapsed, the
FCM will attempt the restart. This attempt to restart will continue indefinitely until the
condition is corrected. Manual override is permitted during Auto-Restart.
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.OPTION #799 - REVERSE
.FLOW CONTROLS For
.OPTIONAL PUMP and
.MOTOR
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This subsystem has the controls and piping necessary for a reverse flow single
pump/motor (sold separately) to pump fuel back to main storage tank to prevent
overfill. This system begins operation at a level above the fill pump(s) normal turn-off
point.
As a safety feature, the fuel supply system can be optionally configured with a sub-
system that will pump the fuel in the day tank or subbase to another container –
normally back to the main supply tank. This operation is referred to as "reverse flow".
It can be configured as either a single pump and motor or as a duplex.
The single pump and motor of a reverse flow (or the first of a duplex setup) is always
referred to as Pump #3. If the configuration is a duplex reverse flow, the second is
Pump #4.
Both reverse flow pumps have their own set of "HOA" switches, "turn ON" levels,
pump running LEDS, and a pump fail LEDS and reset switches. And both share a
common "turn OFF" level.
Pump #4, in its basic setup, is always in a "lag" position, i.e., it will only turn on when
the fuel level has risen past a point where it has been predetermined that Pump #3
cannot keep up with the filling of the tank. The Alternation of Duplex Pumps option
explained below will override this permanent "lag" assignment.
If Alternation of Duplex Pumps option is not installed, Pump #3 is always referred to
as the Primary Reverse Pump and Pump #4 is the Secondary Reverse Pump.
When a reverse flow pump is turned ON, the fill pump(s) will automatically be turned
OFF in case either has caused the problem.
The voltage, size, type of current, etc. of reverse flow pump(s) and motor(s) are not
required to match those of the fill pump(s) and motor(s).
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.OPTION #799A - DUPLEX
.REVERSE FLOW PUMP
.and MOTOR w/AUTOMATIC
.LEAD/LAG ALTERNATION
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Two sets of controls and piping necessary for two reverse flow pumps/motors to
pump fuel back to main storage tank to prevent overfill. (The pumps and motors are
sold separately.) The "lead" system begins operation at a level above the fill pump(s)
turn-off point – the "lag" system begins at a level above the lead system (provides
assistance and backup)
If the reverse flow system has been designed correctly and the lead pump/motor
(Pump #3) has been sized to match the demands of the generator, and no unusual
condition or problem arises, it is conceivable that the "lag" pump/motor (Pump #4) will
never or very seldom see action. This "alternation" option switches the lead/lag
assignment of each pump/motor in an attempt to equalize the run time.
When a pump motor is cycled into lead position, it is assumes the title as the Primary
Pump, whereas, the lag pump/motor is the Secondary. This does not change the fact
that the secondary pump will back up the primary at a predetermined level.
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