Gasboy CFN Series Diagnostic Manual - Manual (Page 195)

Pump Control Unit
12/26/02 6-5
PUMP CONTROL CMOS CPU PCB (C05321)
The Pump Control CMOS CPU PCB is the heart of the GASBOY CFN pump control unit. It
provides the following features:
•
processes and stores all pump control unit data (contains a rechargeable battery for data
retention during power failures)
•
communicates to the CFN site controller via the RS-422 line
•
controls slow flow, fast flow, and pump relays for each hose outlet
•
monitors the pulser inputs for four pumps
•
monitors the switch detects for four pumps
•
provides diagnostic LED's to monitor operation of the unit
•
provides self-test capabilities without the use of the CFN site controller
Layout
This drawing shows the CMOS CPU
PCB orientation in the pump control
unit.