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Sb - delay time switches, Sc - switch detect mode switches, Sc - miscellaneous switches – Gasboy CFN Series Diagnostic Manual User Manual

Page 203

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Pump Control Unit

12/26/02

6-13

SB - Delay Time Switches
The delay time is the period between
activation of the submersible pump and
the activation of the slow flow and fast flow
valves. The delay time switches are set to
accommodate a variety of leak detectors
used in submersible pump applications.
The time should be set according to the
type of leak detector installed on the
submersible pump to allow a normal leak
test for each transaction. If different leak
detectors are used on each pump, set the
switches to the longest delay time
required. Set the delay time to zero
seconds for suction pumps.

NOTE:

The leak detect delay time feature requires a PPC Motherboard II. The PPC
Motherboard II is not yet available; therefore, these switches should be closed.

SC - Switch Detect Mode Switches
These switches 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, 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.

SC - Miscellaneous Switches

DEAD This switch enables the deadman timer. It should always be open.

TEST

When open, this switch enables the test mode, allowing the basic PCU functions to be
tested without the use of a site controller. See Diagnostic Tests later in this section for
instructions.