Operation (continued), Procedure to re-calibrate flowmeter, Operation – Smithco Spray Star 3184 (sn 300G073 – 300G090) Operator Manual User Manual
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Operation
OPERATION (CONTINUED)
SPRAYER VALVE SETTINGS AND SPRAY TANK AGITATION
The 3-way 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 is one manual flow control valve on the discharge side of the spray system. This valve controls the agita-
tor. 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 Li-
ters) 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.
If your Spray Star is fitted with a hose reel, there is a second ball valve on the discharge system to supply mate-
rial 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.
PROCEDURE TO RE-CALIBRATE FLOWMETER
1
. Enter a Meter Cal number of 10 in Meter Cal Button
2. Enter a Total Volume of Calibrating the Pressure Gauge in Total Volume button
3. Switch Off all booms.
4. Remove a boom hose and place in calibrated 5 gallon container
5. Switch on appropriate boom switch and master switch. Pump exactly 10 gallons.
6. Readout in Total Volume is the new Meter Cal Number. Should be within 3% of number stamped on
flowmeter.
7. Repeat the procedure several times to ensure accuracy.
8. To verify calibration, fill applicator tank with predetermined amount of measured liquid. DO NOT RELAY
ON GRADUATION NUMBERS ON MOLDED TANK. Empty tank under normal operation conditions. If the
number under total volume is different from the predetermined amount of measure by more than 3%
compete calculation in back of book.
9. Enter corrected Meter Cal before resuming application.