Gasboy CFN Series, Startup Manual, Page: 45 / 119

Jumpers & Switch Settings
03/07/03 5-7
10. The settings for switch bank SC (1 through 4) determine when the pump control unit begins
counting pulses for a particular pump. When a switch is open, the PCU begins counting
pulses when the corresponding pump is activated. When a switch is closed, as it should be
for most configurations using mechanical pumps, the PCU doesn't count pulses for the
corresponding pump until the mechanical reset has completed. The switch should be closed
when the pump is wired for postpay-prepay console operations.
11. In switch bank SC , 5 through 8, only switch 6 and 8 are active. Switch SC-6 is the Deadman
Timer Switch. If enabled, the pump control unit must be polled at least every 15 seconds by
the Site Controller. If it fails to sense a poll at that time, it turns all relays off. If Reset
Complete Mode is used on any pump on a particular PCU, the deadman timer should be
disabled. Switch SC-8 enables the test mode allowing the basic PCU functions to be tested
without the use of a site controller.
12. Re-install the EXPMUX Pump Control CPU board.