Gasboy 9820A Series - Manual (Page 24)

GASBOY Series 9820A
4-2 03/07/03
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
screw of the register 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).
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 power must come from a different breaker
than that of the pump. This not only provides electrical isolation for the micro power, but allows
the unit to be disabled without shutting off power to the microprocessor PCB. The AC power for
the micro power may be grouped together for multiple units. It is recommended that no more than
8 units be supplied from one breaker.
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 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 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.
PULSE OUTPUT
The Pulse Output option provides the means for an external system to monitor the quantity that is
dispensed by the 9820A dispensing unit. A description of the interface is provided in Control
Lines, Pulse Output, in Section 3. Consult the wiring diagrams provided in Wiring in Section 4,
along with the installation manual of the system that will be connected to the 9820A dispensing
unit.
RS-485
The RS-485 option provides the means for direct connection to a GASBOY CFN Series System.
Consult the wiring diagrams provided in Wiring in Section 4, along with the installation manual of
the CFN Series System for proper wiring.