Goldacres Crop Cruiser G6 Operator's Manual page 93

RapidFire
Air Solenoid Nozzles
The machine is fitted with 16 section nozzle control
as standard. The nozzle system consists of a master
and slave arrangement for each section. One master
air solenoid per section is electrically operated, which
then sends air to activate a number of slave cylinders
that are pneumatic only.
Master cylinders have dual or single nozzle bodies,
depending on the spacing optioned at time of
purchase, but they operate in the same way.
In the event that nozzles do not operate as expected
there are some checks that can help diagnose
and solve the problem. First check the electrical
connections to the master air solenoids. There
should be power at the connector when the nozzles
are activated from the cabin and the connectors
should be securely plugged in to the nozzle. The air
lines should also be checked for secure fitment and
presence of air pressure in the 6 mm supply lines to
the masters when the machine is running.
Nozzle & Air Check
The air check nozzles allow for instantaneous
response at the nozzle tip. The lines can be at
spraying pressure and when switched on or off,
the nozzle responds quickly with no dribbling, as
pressure builds up or subsides.
The air checks close under a spring tension of 140
PSI. This traps the liquid in the spray line at the same
pressure that it was being applied. When the booms
are turned on, air pressure acts against the 140 PSI
springs instantly opening flow to the nozzle allowing
the trapped boom line pressure to apply the liquid at
rated pressure and droplet size with full fan angle.
The air check valve is located on the side of the
nozzle, it has 2 O-rings in it. Over time, the O-ring
may swell or be damaged. This may result in the
nozzle dripping or being slow to shut when it has
been turned off. If the nozzle leaks the outer O-ring
requires replacement. If the air shut off has poor
or delayed response the inner O-ring requires
replacement.
G4.7, G5, G6 Crop Cruiser Operator's Manual MY19 - REV 0
Outer O-ring
Inner O-ring
Master air solenoid valve
Boom poly
Check Valve
Breather
Electric Slave air outlet
operated air (4mm) with
solenoid release ring
To remove the air check from the nozzle, the air
supply must be removed. Ensure that all the air
pressure is vented from the system. Ensure that all
liquid pressure has been removed from the boom
lines.
To remove the air hose from the check valve, push
down on the release ring on the air fitting and at the
same time, pull the hose.
Unscrew the air check valve from the main body.
Replace the O-rings that are in the air check valve.
Screw the air check valve back onto the main nozzle
body. When re-fitting the hose, simply push it into
the fitting.
On dual or quad nozzle bodies, the body is a fixed
unit and the multi spray nozzle body will need to be
removed from the clamp around the pipe.
See the parts book for more detail.
Air Dryer & Oiler
The air supply to the RapidFire system has a dryer,
oiler and pressure regulator fitted in the circuit.
The dryer removes all the moisture from the air
supply and traps it in a clear bowl. This must be
drained daily to prevent moisture entering the rapid
fire system.
Nozzle
Master air inlet
(6mm) with
release ring
Continued over page
Chapter 8 - Operation - 89