X20 Sprayer Reference Manual
Dump
Figure 12-3. Dump Valve Connector
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
1.Set a Digital Multimeter to measure 20vdc
2.Measure the voltage between Pin-1 and Pin-2 in the 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.
