9820K Setup and Special Features
CPU Switch Settings
Page 36
MDE-4567D 9820K Series AST Pumps Installation and Operation Manual · January 2020
JP2: Mode
If the 9820K is controlled by a Gasboy Fuel Controller using RS-485 Communications, the
jumper should be open (online mode). If the 9820K is controlled by a Gasboy Fuel Controller
using Pulse-Output mode, all non-Gasboy Fuel Controllers, or no fuel management system,
the jumper should be installed (standalone mode).
Note: The 9820K is shipped in standalone mode.
Mode
SW1-2
Online
Open
Standalone
Installed
JP3, JP4: Delay Time
These two jumpers set the delay time used by leak detectors in submersible pump applications.
The delay time is the period between activation of the submersible pump and activation of the
Slow Flow valve. This 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. The delay time should be
set to 0 seconds for suction pumps.
Delay Time
JP3
JP4
0 seconds
Installed
Installed
4 seconds
Installed
Open
5 seconds
Open
Installed
6 seconds
Open
Open
Note: Settings that are too short will result in the leak detector tripping incorrectly and the
ones that are too long will result in a longer wait for the fuel to be pumped.
JP5: Hose Pressurization
For US Gallons (always in Hose Pressurization mode), this jumper is ignored. This jumper is
used to determine if hose pressurization is used. If enabled, the slow flow valve is opened
before reset is complete, to allow the hose to be pressurized before fuel dispensing begins.
Pressurization
JP5
Enabled
Installed
Disabled
Open
JP6: Authorization
This jumper allows activation of the 9820K from some types of fuel management systems.
When the jumper is installed, a 115 VAC (230 VAC International) signal must be present on
the Pump Motor Feed line for pump activation to occur (required setting for Gasboy Fuel
Controllers using Pulse-Output mode, and all non-Gasboy systems). When open, the 9820K
ignores the Pump Motor Feed line (required setting for Gasboy Fuel Controllers using RS-485
Communications, or no fuel system).
Authorization
JP6
Yes
Installed
No
Open