Gasboy 9800Q Series - Manual (Page 36)

Wiring
Page 5-2 MDE-4340A Series 9800Q Pumps and Dispensers Installation/Operation Manual · January 2006
Ground
To ensure proper operation of the equipment and provide the necessary safety factors, this unit
must be grounded. A ground wire (preferably green) must be connected between the ground
wire of the pump/remote dispenser 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 that the
neutral and ground bus strips be bonded together (unless prohibited by local codes).
Circuit Breakers
Power to the unit must be supplied from dedicated breakers. No other equipment should be
powered from these breakers. AC power for the micro feed must come from a different
breaker than that of the pump or remote dispenser control. This not only provides electrical
isolation for the micro feed, but allows the unit to be disabled without shutting off power to the
microprocessor PCB. The AC power for the micro feed may be grouped together for multiple
units. It is recommended that no more than eight units be supplied from one breaker. Remote
dispensers may be grouped together on a single breaker when the submersible pump has its
own breaker. It is recommended that no more than two remote dispensers be powered from
one breaker to maintain isolated control with the circuit breaker panel in case of problems.
Units directly driving pumps (suction or submersible) should be supplied power from a
separate breaker. A tag on the motor identifies the maximum current drawn by the motor. If
two (2) pumps are supplied from one breaker, that breaker must be capable of handling the
load of both motors. In cases where multiple remote dispensers supply power to a single
submersible pump, all breakers controlling the remote dispenser must be on the same phase of
power. Failure to do this will damage the equipment. Provisions must be made to break both
legs of any AC circuit.
The Pump Motor
Pumps are shipped from the factory with motors wired according to the specifications given
on the order as to kind of current, frequency and voltage.
Very often, on installation, it becomes necessary to change the original setting to suit the AC
power source. To do this, locate the motor change-over plate; typically located on the shaft
end of the motor, and remove the screw which secures it in place. Slide the plate so that the
desired voltage, as marked on the plate, lines up with the screw hole. Re-insert the screw and
secure the plate in place.
CAUTION CAUTION
Many motor failures result from improper setting of the motor change-over plate. If set
for 115 VAC and a 230 VAC feed is used, the motor will burn out after running only a
short time. If set for 230 VAC and a 115 VAC feed is used, the motor will run very
slowly and the starting field will soon burn out.