Pump motor feed, Neutral feed, Submersible feed, submersible drive – Gasboy 1000 Series Fuel Management System Installation User Manual

Page 26: Reset complete (switch detect), Light feed, Light neutral

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System and Pump/Dispenser Wiring

Control Lines for Mechanical Pumps/Dispensers

Page 22 MDE-4344A Series 1000 Fuel Management System Installation Manual · November 2008

Pump Motor Feed

This is a 115 VAC input which is supplied to the input side of one of the internal switches of
the electric reset. This line should be switched through the Series 1000 system and should only
be on when the pump/dispenser is authorized or in manual mode. When the reset finishes its
cycle, the 115 VAC input to the switch is passed through as an output causing the pump motor
to receive power and begin fueling. Without power to this line, the unit would reset, but be
unable to fuel. Two feed lines are provided in twins which contain two motors. The gauge of
this wire (and its neutral wire) should be determined according to the size of the motor, the
voltage at which the motor will be powered (115 VAC or 230 VAC), and the distance from the
breaker panel to the pump. It is possible to combine the pump motor feeds for twins and
supply them from one breaker; however, the gauge of the wire needs to be adjusted to handle
the load of two motors.

Note: 230 VAC is developed across a motor when the other leg of the motor is connected to a

Phase 2 Feed.

Neutral Feed

This is the AC current return line back to the breaker panel for all attached devices (pump
motor, reset motor, solenoid valves). The gauge of this wire must be equal to that of the pump
motor feed (suction pumps) or submersible feed (dispensers).

Submersible Feed, Submersible Drive

This is a 115 VAC input which is supplied to the input side of one of the internal switches of
the electric reset. This line should be switched through the Series 1000 system and only be on
when the pump/dispenser is authorized or in manual mode. When the reset finishes its cycle,
the 115 VAC input to the switch is passed through as an output (submersible drive) to drive a
starter relay or to directly drive a submersible motor up to 3/4 HP at 115/230 VAC. Any
submersible motor exceeding this limitation must use a starter relay.

Note: 230 VAC is developed across a motor when the other leg of the motor is connected to a

Phase 2 Feed.

Reset Complete (Switch Detect)

This is a 115 VAC output which is used to indicate the reset is complete and the pump/
dispenser is ready to dispense product. Two lines are provided for twins. This line should only
be used when monitoring of the pump/dispenser is desired (such as when used with a fuel
management system). This line must be capped when not in use.

Light Feed

This is a 115 VAC input required to power optional fluorescent lights that may be available in
a pump/dispenser. In a site configuration using multiple dispensers (or pumps), the power for
the lights of up to eight units can be supplied by one breaker. The light feed is not controlled
by the Series 1000 system.

Light Neutral

This is a return line for AC current from the lights to the breaker panel.

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