Gasboy 580 Series - Manual (Page 19)

MDE-4766 Series 580 Installation/Operation/Parts Manual · April 2009 Page 15
Pulsers and Pulser Wiring Wiring
Pulsers and Pulser Wiring
A pulser is an optional device which is used when external monitoring of the dispensing unit
operation is desired. The pulser transmits one electrical signal (pulse) for each predetermined
amount of fuel dispensed. The signal is received by the external monitor (fuel management
system) which keeps a running total of the quantity of fuel being dispensed during each
transaction.
All Series 580 pulsers are operated with DC voltages. These are reed pulsers which are
available as either 1:1 or 10:1 pulses per unit of measure. The pulser type should be selected
according to the monitoring equipment, the application, and the regulations that must be met.
All Series 580 pulsers are mechanically driven by the register. The shaft which drives the
pulser does not turn during reset.
Conduit
Use threaded, rigid metal conduit or a rigid non-metallic conduit for applications below the
Gasboy Series 580 dispensing unit, to carry electrical wires. If you use non-metallic conduit, it
must be at least 2 feet underground. The last 2 feet of the underground run to the ground
interface must be a rigid metal conduit or threaded steel intermediate metal conduit. Tighten
all threaded conduits. When the Series 580 dispensing unit is used with a Gasboy Fuel
Management System, it is recommended that AC power wires be installed in a separate
conduit from the DC pulser; they should not run in any sort of common conduit or trough.
However, if AC and DC power wires share conduit, pulser wiring must use the cable as
specified in the Pulsers section.
When using a fuel management system other than a Gasboy system, see the manufacturer’s
installation manual for specific conduit requirements.
All wiring and conduit runs must also conform with the National Electrical Code (NFPA 70)
and the Automotive and Marine Service Station Code (NFPA 30A). All wiring and conduit
runs must conform to local codes. Canadian users must also comply with the Canadian
Electrical Code.