2
Lubrication and Maintenance
Daily Maintenance
General
During the first few days of operation, before
starting each day, check that all hardware is
tight and tighten all hose clamps. Inspect the
unit for leaks while running.
PTO Shaft
Grease the PTO shaft with multi- purpose
grease at the intervals shown below. This is
the amount of lubrication recommended for
normal operation. More frequent inspection
and lubrication may be needed under very
dusty conditions.
Pump
Check the oil level in the viewer daily and if
necessary top up with SAE 20W-40 multigrade
engine oil. The oil must reach the mark on the
side of the oil level viewer.
Filters
Clean all filters as stated below. More frequent
cleaning may be found necessary depending
upon circumstances. The best method for
cleaning filters is to wash them with a soft
bristle brush. Check for any tears or holes and
replace if damaged.
Check and if necessary clean the basket
strainer under the tank lid before each fill.
Always clean the suction filter before each
tank refill and at the end of the day. Close the
stop valve by pushing in and unscrewing the
yellow/red tap, then unscrew the filter cover to
remove the element. Ensure the O-ring is in
good condition when refitting.
Spraying (Bar)
pressure (psi)
2 - 5
29 - 73
5 - 10
73 - 145
10 - 20
145 - 290
20 - 50
290 - 725
Surge air (Bar)
pressure (psi)
2
29
2 - 5
29 - 73
5
– 7
73 - 102
7
102
O-Ring
SUCTION FILTER COMPONENTS
Stop Valve Tap
Tank, Pump and Spray Lines
At the end of each day run clean water through the
pump and lines to purge them of chemicals.
Rinse out the tank to remove powdered material.
Never leave chemicals in the tank that may settle
to the bottom, harden and break into lumps as this
may block the suction filter.
Dispose of unused chemical, chemical mix, rinse
water and chemical containers as recommended
by the chemical manufacturer or appropriate
government authority.
Weekly Maintenance
PTO Shaft (Every 20 Hrs)
Slide the PTO shaft
apart, clean the telescopic tubes with kerosene and
apply multi-purpose grease to the sliding surfaces,
then reassemble.
This is most important in dusty conditions.
Monthly Maintenance
Gearbox.
Check the oil level every 50 hours and if
required top up with SAE 80W-90 gear oil.
The oil should be level with the centre of the input
shaft and can be checked through the filler plug in
the top of the gearbox using a piece of wire as a
dip stick.
Annual Maintenance
Diaphragm Pump.
Drain the oil from the pump
annually, or at the end of each spraying season.
Remove the pump heads, carefully inspect the
diaphragms and replace if necessary. Also check
the inlet and outlet valves, seats and springs for
wear, damage or chemical corrosion and replace
as necessary. Refill with SAE 20W-40 multi-grade
engine oil.
Check the air pressure in the surge chamber at the
end of the pump. The air pressure behind the
chamber’s diaphragm smoothes out the pulsations
in fluid flow and should be set in accordance with
the spraying pressure being used - refer chart
below. Adjust the pressure at the valve fitting on
the chamber using a compressed air hose fitted
with a tire valve connection and a reliable pressure
gauge.
