Gasboy 9120Q Series - Manual (Page 13)

Control Lines
9120Q Compact Commercial Pumps
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March 2004 7
3. Control Lines
Purpose
This section is provided to familiarize the installer with the control inputs and outputs that are
available for the Series 9120Q. It is recommended the installer read these descriptions to obtain a
better working knowledge of the unit in order to guide him in planning the site wiring. Reference
Section 4 for a specific wiring diagram and installation notes.
Grounding
To ensure proper operation of the equipment and provide the necessary safety factors, a good
ground line must be provided. A ground wire (preferably green) must be connected between the
unit’s AC junction box ground lug and the main electrical service panel. One (1) earth ground
connection is required per unit. The ground rod is to be a solid corrosion-resistant conductor and
must be installed at the main electrical panel in accordance with the National Electrical Code. It
should be properly tied into the ground bus strip of the panel. We recommend the neutral and
ground bus strips be bonded together (unless prohibited by local codes).
Pump Motor Feed
The pump motor feed is a 115VAC input which is supplied to the pump motor. 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 (115VAC or 230VAC), and the distance from the breaker panel
to the pump.
Neutral Feed
The neutral feed is the AC current return line back to the breaker panel for all attached devices.
The gauge of this wire should be equal to that of the pump motor feed.
Switch Detect
Switch detect is a 115VAC output which is used to indicate the reset is complete and the compact
commercial pump unit is ready to dispense product. It should only be used when monitoring of
the pump unit is desired (as when used with a fuel management system). This line is active when
the motor is turned on and comes up to speed. It must be capped when not in use.
Phase 2 Feed
The phase 2 feed is a hot feed which is the opposite phase of the pump motor feed. This line and
the pump motor feed are used for 230VAC motor applications.
Pulser
The pulser supplies a DC output which is provided to indicate the quantity dispensed. Pulsers are
optional and are only used when monitoring of the pump unit operation is desired (as when used
with a fuel management system).