Gasboy 9120K Series Installation - Manual (Page 14)

Wiring Ground
Page 10 MDE-4567C 9120K and 9820K Series AST Pumps Installation and Operation Manual · September 2008
Ground
To ensure proper operation of the equipment and provide the necessary safety factors, this unit
must be grounded. Refer to
“Ground” on page 23 .
Circuit Breakers
A separate circuit breaker is required for the motor and another for the rest of the unit. A tag on
the motor identifies the maximum current draw of the motor. If two (2) pumps are supplied
from one breaker, the breaker must be capable of handling the load of both motors. Provisions
must be made to break both legs of any AC circuit.
Note: Canadian regulatory requirements may differ.
Pump Motor
Pumps are shipped from the factory with motors wired according to the specifications given
on the order regarding 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 changeover 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. Reinsert the screw and secure the
plate in place.
Many motor failures result from improper setting of the motor changeover plate. If set for
115 VAC and a 230 VAC feed is used, the motor will burn out after running only for 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.
Pulse Output
The Pulse Output option provides the means for an external system to monitor the quantity
that is dispensed by the 9820K pumping unit. Refer to
“Pulse Output” on page 26 . Refer to
“Wiring Diagrams” on page 15 , along with the installation manual of the system that will be
connected to the 9820K pumping unit.