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X20 Sprayer Reference Manual
Dump
The Dump Valve Drive Outputs (Dump open and Dump close on
schematics) drive a 2-Wire Motor Valve (generally referred to as
Dump, Main Valve or Master Valve).
To open the Dump Valve the controller applies 12 Volts to Pin-1 and
Gnd to Pin-2 of the connector (Figure 12-3). To close the dump valve
the controller applies Gnd to Pin-1 and 12 Volts to Pin-2. The Dump
is open (bypass to tank) when all sections or the master switch is OFF
and closed (pressure to Spray-line) when the master and any sections are
ON.
Dump Drive Test
Set a Digital Multimeter to measure 20vdc 1.
Measure the voltage between Pin-1 and Pin-2 in the 2.
following states:
State 1• —Controller set to manual, sections and master
ON, pressing and holding the increase arrow (▲). The
meter should display 12 or -12 Volts.
Please note: It is not important which polarity is
displayed.
Figure 12-3. Dump Valve Connector