12
Operation
OPERATION
(CONTINUED)
SPRAYER VALVE SETTINGS AND SPRAY TANK AGITATION
The gate valve on the suction side of the pump, between the tank and the pump must be open before pump is
engaged. Close this valve only when necessary to clean the filter with spray material in the spray tank.
There are two manual flow control valves on the discharge side of the spray system.
A. One controls the agitator. This valve may be opened as much as necessary to provide hydraulic agitation
through the quadrajet agitator in the tank bottom. This valve may be partially closed to prevent or reduce
foam buildup from the spray materials inside the tank. When the liquid level in the spray tank reaches a
certain level (usually 1-25 gallons (3.8-95 Liters) depending on terrain and other conditions) it may be
necessary to close the valve in the agitator line in order to prevent loss of suction prime.
B. The larger flow control valve is used to set the general pressure range at which the system will operate.
Partially close the valve to increase pressure, open the valve to decrease pressure. Also close this valve
before cleaning filter if there is liquid in the tank.
C. This valve controls flow to all three boom sections. With the Manual System all three boom sections
operate together.
If your Spray Star is fitted with a hose reel, there is a third ball valve on the discharge system to supply material
to the hose reel.
The Quadrajet agitation system operates with four venturi jets in the tank bottom. These jets have replaceable
orifice discs which discharge the following amounts of spay material.
Input to Input to Agitator Agitator Agitator Agitator
Nozzle Agitator Agitator Pressure Pressure Output Output
Diameter in gpm in L/min in psi in bar in gpm in L/min
1
/8" 1.9 7.2 25 1.7 6.3 23.8
1
/8" 2.7 10.2 50 3.4 10.0 37.9
1
/8" 3.8 14.4 100 6.9 15.0 56.8
5
/32" 2.8 10.6 25 1.7 7.6 28.8
5
/32" 4.2 15.9 50 3.4 12.2 46.2
5
/32" 5.5 20.8 100 6.9 17.5 66.2
3
/16" 3.6 13.6 25 1.7 9.1 34.4
3
/16" 5.6 21.2 50 33.4 14.3 54.1
3
/16" 7.9 29.9 100 6.9 18.7 70.8
You can change orifice disc sizes to enhance spray system performance. Smaller discs reduce amount of agita-
tion (desirable in some foaming materials) and make more dischargeable liquid available for nozzles. Larger (or
none) discs increase amount of agitation and make less dischargeable liquid available for nozzles.
To Next Page
Loading...
