2
Locating Tab & Hub Clamp screw
Operation
Starting the Sprayer
Before starting the sprayer for the first time
grease all lubrication points including the PTO
shafts. Check that the oil level in the
diaphragm pump is level with the mark in the
viewer and if necessary top up with SAE 20W-
50 multigrade engine oil. Ensure that the
gearbox oil level is correct.
Refer Maintenance section for details.
First conduct a trial using clean water only (no
chemicals) to become familiar with the controls
and to check that all systems are functioning
correctly without leakage.
Check that the fan gearbox is engaged and the
required speed is selected. Never engage the
fan drive with the tractor engine running or the
PTO engaged. Moving the gearbox lever to the
high position produces maximum airflow. The
low position produces less airflow and can be
used for small or early season canopies. The
neutral position enables the pump to be
operated without the fan for putting chemicals
into the tank, hand spraying or similar
operations.
GEARBOX SELECTION LEVER (L)
The fan incorporates a centrifugal clutch
which protects the gearbox and driveline if
the PTO is engaged rapidly. The sprayer
should always be operated at 540 PTO rpm to
ensure correct operation of the centrifugal
clutch and to prevent its premature wear.
With electric valve controls, switch the Master
valve to the “Off” position before engaging the
PTO. This places the pump into by-pass
mode and closes the outlet valves to the
spray nozzles on either side of the sprayer.
Engage the PTO slowly and allow the sprayer
to run in by-pass mode. Once the pump is
primed increase the tractor speed to 540 PTO
rpm.
Flip the required number of spray nozzles to
the open position. Refer to the Calibration
section for information on nozzles and jet
selection.
Electric Motor Valves
The electric valves consist of a master valve to
switch from bypass to pressure, section valves
for left and right side nozzles which
incorporate regulating bypass compensators
and an electric pressure adjusting valve to fine
tune the spraying pressure. The compensating
ports fitted to the section valves, when
adjusted correctly, will keep the system
pressure at the same level when individual
sections are turned on and off.
Master Valve
Electric Pressure
Section Valves Regulating Valve
Manual Pressure
Regulating Valve
