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Chemical Induction Hopper
Operation
1. Add at least 500 litres of clean water to the main
spray tank. Initially there needs to be a sufficient
amount of water in the tank in order for the
pump delivery to create the venturi effect via the
venturi fitting. This will also ensure that agitation
takes place when the remaining water is added.
2. Lower the hopper for convenience. (Check that
the delivery hose to the hopper is not restricted
or kinked).
3. Ensure that the red handle on the spray pump
three-way ball valve is pointing towards 'Suction
from main tank'.
4. Open the induction hopper ball valve and (if
required) the supermix agitator ball valve. Ensure
the bypass line ball valve and the chemical probe
ball valves are closed.
5. Operate the pump at the speed necessary to
generate at least 80 PSI delivery pressure (as
displayed on the sprayer pressure gauge). Do not
run it faster than 540 RPM.
NOTE: The higher the pump delivery pressure,
the greater the venturi suction and the quicker
the hopper will transfer the chemical. The delivery
pressure should not exceed 120 PSI as determined
by the pressure relief valve setting.
7. Put the required amount of chemical into the
hopper (liquid or granular). Wear the necessary
protective clothing and use the required safety
equipment to avoid exposure to chemicals.
8. Open the hopper tank ball valve at the bottom of
the hopper by turning the yellow handle up. The
chemical should be now transferring to the main
spray tank.
9. Rinse all chemical drums and the hopper as per
the rinsing instructions.
When finished using the hopper:
• Close the hopper tank ball valve at the bottom of
the hopper by turning the yellow handle so that it
is horizontal.
• Turn the bypass valve 'ON'.
• Turn the induction hopper valve 'OFF'.
• Ensure that the agitator valve is 'ON'. The sprayer
should always be agitating until spraying begins.
30 - Chapter 8 - Operation
• Raise the hopper to its transport position and
replace the retaining pin and 'R'-clip in the
mechanism.
Rinsing
RINSING FROM EXTERNAL SOURCE
To rinse the Induction Hopper and chemical drums
with fresh water from the external water delivery
station:
NOTE: Spray pump must also be operating.
1. Lower the hopper. (Check that the delivery hose
to the hopper is not restricted or kinked).
2. Make sure that all valves on the EZ control
external water delivery station are OFF.
3. Make sure that the Hopper Rinse valve on the
top of the hopper is OFF.
4. Connect the fresh water fill hose to the quick-fill
coupling.
5. Operate the fresh water pumping system
between 70 and 100 PSI.
6. Turn the Induction Hopper valve on the Pressure
delivery station ON.
7. Open the hopper tank valve at the bottom of the
hopper by turning the yellow handle DOWN.
8. Ensure that the hopper drain tap, also located at
the bottom of the hopper, remains CLOSED.
9. To rinse a drum, push the drum over the rinsing
nozzle located in the top of the hopper.
10. To rinse the hopper, turn the Hopper Rinse valve
on the top of the hopper ON. Close this valve
when the hopper has been rinsed.
When the hopper is empty:
• Remove any chemical drums that have been
rinsed from the hopper.
• Turn the hopper tank valve at the bottom of the
hopper OFF by turning the yellow handle so that
it is horizontal.
• Turn the Induction hopper valve on the EZ
control Pressure Delivery station 'OFF'.
• Drain the hopper of any remaining liquid using
the hopper drain tap at the bottom of the
hopper.
Prairie Compact 2000L Operator's Manual MY19 - REV 1
Continued over page
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