Brandt SB4000, Operator'S Manual

Page: 77 / 145

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1. Carefully study the chemical container label and
determine the rate of application (i.e., gallons per
acre or liters per hectare) for the chemical/water
mixture.
2. Be certain of the sprayer nozzle tip size. Examine one
of the tips. Every tip is stamped with the tip size.
3. Refer to the Nozzle Delivery Rate Charts in Sections
4.9.1, 4.9.2 or 4.9.3 and determine the speed and
pressure required to deliver the correct rate for your
beginning to spray. This will ensure proper application
nozzle tips.
NOTE
The Nozzle Delivery Rate Charts are based on
spraying water, that weighs 1.00 kilograms per litre
(10 lbs. per Imperial gallon
/ 8.34 lbs. per US gallon).
Conversion factors must be used when spraying
solutions heavier or lighter than water (see Section
4.8).
4. Do a physical nozzle flow rate check and sprayer
calibration check (see Sections 4.6 and 4.7) before
beginning to spray. This will ensure proper application
of the chemical.
The selection of a nozzle tip will specify the required
field speed, application rate and fluid circuit pressure for
spraying in the field. It will be necessary to set the valves
in the fluid circuit to produce the required pressure for
the calibration and the field.
To set the throttle and agitation valves on the sprayer,
follow the procedure outlined below.
1. Use a water hose or pressure washer to clean each
nozzle and wind cone.
2. Remove each tip and clean the screen.
Always wear rubber gloves and protective clothing
when working on a sprayer to prevent contamination.
4.5 SETTING THE SPRAY RATE
IMPORTANT
Never calibrate the machine with active chemicals
in the tank. The solution can contaminate workers,
the workplace and the environment.
3. Add clean water until the tank is 1/2 full.
4. Turn all valves on the panel off. See Fig. 4.3.
5. Fully open the tank shutoff valve, the pump shutoff
valve and the throttle valve. Set the agitator valve to
the desired position, approximately 3/4 open is a
good starting point. It can be wide open if required.
6. Start the tractor and the sprayer pump. Bring the
tractor engine up to operating RPM.
7. Turn all booms switches ON. (Use the switches on
the in-cab control).
NOTE
Be sure the in-cab control pressure gauge agrees
with the gauge on the platform (within 2 to 3 psi).
Compensate as required to obtain the desired boom
pressures.
NOTE
If you are using an auto-rate controller, the following
steps do not apply to you. Follow the instructions in
the Auto-Rate Controller manual.
9. Hold the pressure adjusting toggle switch on the in-
cab control so the pressure to the booms cycles
between the highest reading to the lowest pressure
reading. If the switch is held in the same direction,
the pressure will cycle from high to low to high etc.
Release the switch when the pressure is at the high
reading.
10. Adjust the throttle valve until a reading of 30 psi
(210 kPa) above operating pressure is set. Go to
the pressure switch on the in-cab control and move
the pressure down to the desired pressure.