Gasboy 9800Q Series - Manual (Page 30)

Control Lines
Page 4-2 MDE-4340A Series 9800Q Pumps and Dispensers Installation/Operation Manual · January 2006
Micro Neutral
The Micro Neutral is a return line for AC current from the microprocessor of the dispensing
unit to the breaker panel. This line also serves as the return for the optional TopKAT.
Control/Pump Motor Feed
The Control/Pump Motor Feed is a 115 VAC (230 VAC Int'l) input which is required to power
and authorize the control line. This line is used to provide authorization for the dispensing unit
(when enabled through the DIP switches). If this line is controlled by a Fuel Management
System using solid state relays, a resistor assembly must be installed between the Control Feed
line and Feed Neutral to prevent false triggering of the authorization input. The resistor
assembly is 8.2K OHM, 10 Watt (P/N C05818) for 115/230 VAC domestic and 30K OHM, 10
Watt (P/N C06683) for 230 VAC international wiring. Two Control/Pump Motor Feed lines
are provided for twins.
The Control/Pump Motor Feed line is used to power the slow flow and fast flow valves (when
installed). The power used to control the pump is also provided by this line. It is possible to
combine the control lines 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. The Reset Complete signal
used for external monitoring of the pump also originates from the Control/Pump Motor Feed
line.
External Valve
The External Valve line is used to directly power an anti-siphon valve mounted on top of an
above-ground tank. The valve must operate at the same voltage as the pump motor and the
current draw must not exceed 1 Amp, or the valve must be switched through an external relay
controlled by the External Valve line. Do not connect two or more External Valve lines
together. If more than one pump is drawing from the tank, separate anti-siphon valves must be
installed, or each External Valve line must operate an external relay which then operates the
valve.
Neutral Feed
The Neutral Feed is the AC current return line back to the breaker panel for all attached
devices (pump motor, solenoid valves).
Control/Submersible Feed (Control/SubM Feed)
The Control/SubM Feed is a 115 VAC (230 VAC Int'l) input which is required to power and
authorize the control line. This line is used to provide authorization for the dispensing unit
(when enabled through the DIP switches). If this line is controlled by a Fuel Management
System using solid state relays, a resistor assembly must be installed between the Control Feed
line and Feed Neutral to prevent false triggering of the authorization input.