Calibrating The Section Valves - Toro 41594 Operator's Manual

the drain valve to the machine and let the valve rest on
the ground. This allows any residual material in the
line to drain.
2
Figure 36
1. Valve open
2. Lynch pin
3. When the tank has drained completely, install the valve
to frame with the lynch pin removed previously and
close the drain valve
4. Fill the tank with at least 190 L (50 US gallons) of clean
fresh water and close the cover.
Note: You can use a cleaning/neutralizing agent in
the water as needed. On the final rinse, use only clean,
clear water.
5. Lower the booms into the spray position.
6. Start the engine and move the throttle lever to a higher
idle.
7. Ensure that the agitation switch is in the On position.
8. Set the pump switch to the On position and use the
application rate switch to increase the pressure to a
high setting.
9. Set the master boom switch and boom control switches
to the On positions to begin spraying.
10. Allow all of the water in the tank to spray out though
the nozzles.
11. Check the nozzles to ensure that they are all spraying
correctly.
12. Set the master boom switch to the Off position, set the
pump switch to the Off position, and stop the engine.
3
1
g018933
3. Valve closed
(Figure 36).
13. Repeat steps 4
ensure that the spray system is fully cleaned.
Important: You must always complete this
procedure at least 3 times to ensure that the spray
system is fully clean, preventing damage to the
system.
14. Clean the strainer; refer to
Strainer (page 29).
Important: If you used wettable powder
chemicals, clean the strainer after each tank.
15. Using a garden hose, rinse off the outside of the
sprayer with clean water.
16. Remove the nozzles and clean them by hand. Replace
damaged or worn nozzles.

Calibrating the Section Valves

Important: If you have the Pro Control™ Spray System
installed, the boom bypass valves must be closed. Use
the following adjustment only when you are not using
the Pro Control Spray System.
Before using the sprayer for the first time or if the nozzles are
changed, adjust the section valves so that the pressure and
application rate remains the same for all boom sections when
you turn one or more sections off.
Note: The section valves must be calibrated each time the
nozzles are changed.
Important: If machine is equipped with a Pro Control™
Spray System, disregard the following steps below this
important note for calibrating the section valves and
read this notice: When using a Pro Control™ system,
the section valves are not used; close the section valves
by rotating the red bypass knobs clockwise. The valve
is closed once you feel a slight resistance while rotating
the knob. Applying excessive torque to the bypass knob
could damage the valve. The bypass knob may require
3 to 4 full rotations (360° = 1 rotation) to completely
close the valve. The numbers printed on the valve are
for reference only; setting the knob to "0" does not
guarantee the valve is closed. If you are using the Pro
Control™ system, you do not need to adjust the section
valves once they are closed. If you use the machine to
spray manually (without the Pro Control™ system), refer
to the steps for calibrating the boom bypass valves prior
to using the machine.
1. Select an open flat area to perform this procedure.
2. Fill the spray tank with clean water.
3. Lower the left and right boom sections.
4. Set the parking brake and start the engine.
5. Set all three section switches and the master boom
switch to the On position.
34
through 12 at least 2 more times to
Cleaning the Suction