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Manual Rate Control - Spray Controls
IN-CAB SECTION CONTROL WITH ELECTRIC
PRESSURE REGULATION
This sprayer comes standard with a simple electronic
control box for spray control. It allows for on/off
control of individual boom sections via the individual
switches, or on/off control of all boom sections
simultaneously via the master switch. The pressure
regulation is electrically controlled via the control
box too with an increase/decrease switch.
It is important that the console is mounted in
the cabin in such a way that it cannot become a
projectile in the event of sudden braking or an
accident or if the sprayer is disconnected from
the towing vehicle. The two bolts at the base of
the control box are designed to provide adequate
mounting to a bracket within the cabin. The master
switch controls all boom valves simultaneously and
the individual boom switches provide independent
control of the boom valves.
Connect the two 7-pin trailer plugs together in
order to be able to control the boom valves.
Connect the battery wires directly to a 12 V battery.
Do not connect to any other voltage line. Attach the
red wire (positive) to the positive terminal and the
black wire (negative) to the negative terminal. Secure
the battery wires with plastic cable ties.
Do not tie the battery wires close to the existing
battery leads or any other electrical wiring. If using
two 12 V batteries e.g. two batteries in parallel, it
is best to utilize the power as supplied by both
batteries. Connect to positive terminal on battery
supplying starter motor and negative terminal on
other battery. Otherwise it is best to alternate the
battery being used each day so that one battery is
not drained completely flat.
The pressure regulating valve is used to alter
the maximum spray delivery pressure. Screw in
the pressure regulating valve (turn clockwise) to
increase the delivery pressure. Unscrew the pressure
regulating valve (turn counter clockwise) to decrease
the delivery pressure. The pressure regulating valve
can also be used as a pressure relief valve if an
alternate method of controlling the pressure is used.
In this capacity, the relief valve provides relief when
the pressure exceeds a pre-determined value.
If the regulating valve is used in this manner, it must
be set so that the pressure can not exceed 690 kPa
(100 PSI). This is a Goldacres factory preset.
Prairie Compact 2000L Operator's Manual MY19 - REV 1
To check or alter this setting, turn the pump off and
unscrew the valve right out.
With all solenoids off, or any boom supply valves,
close all control manifold ball valves so that all flow
passes through the relief valve.
Run the pump at maximum operating speed (540
PTO RPM) and slowly screw the relief valve in until
the desired pressure is achieved (690 kPa). Tighten
the nuts on the adjusting stem so that this setting is
maintained. If the relief setting is too low, it causes
too much flow to bypass back to the tank and it will
limit the maximum obtainable pressure.
Above: In cab section control and pressure regula-
tion control box and harness.
Chapter 8 - Operation - 33
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