Smithco Spray Star 1607P (1999) Operator Manual - Manual (Page 30)

28
Operation
SPRAY OPERATION
(A
FTER
P
ROPER
S
ETUP AND CALIBRATION
)
1. Add 1 /
2
the amount of water required for the spray operation to tank using air gap filler.
2. Start engine, set engine speed below 2000 RPM, and engage pump after taking all previously described
safety and operation precautions.
3. Open agitator valve.
4. Add chemicals (taking all precautions described in this manual and by the chemical manufacturer).
a. Liquids may be poured directly into tank.
b. Wettable powder chemicals must be pre-mixed with water in a container to form a slurry. The mixture
is then added to the tank through the fillwell strainer.
c. Chemical in soluble packs are place into the fillwell strainer basket and dissolved by adding water
through the basket.
The balance of the water required for the spray operation is added to the tank through the fillwell strainer,
using the air gap filler. This will wash any undissolved chemical into the tank.
5. Transport to sprayer site with and agitator operating.
6. Set Engine speed between 2000-3600 RPM.
7. (Optional) Engage ground speed control.
8. Obtain desired spraying speed before activating spray with switches on spray control console.
In some extreme situations, it may be necessary to decrease or completely close the flow of material to the agita-
tor system in order to maintain desired pressure. If agitation is absolutely essential, a change may have to be made
in some combination of ground speed, nozzle size or system pressure to maintain the necessary application rate.
Review the capacity of nozzles being used. Total capacity of all nozzles plus agitation system
must not exceed pumping system capabilities refer to Spraying Procedure section of this
manual. FLUSH PUMP AFTER USE
Pump Pressure
Engine Shaft GPM at GPM at GPM at GPM at Max
RPM RPM 20psi 30psi 40psi 60psi HP
2300 3200 70 55 5 - 1.4
2750 3800 75 71 60 10 1.8
3200 4400 80 78 72 60 3.0
Pump RPM = Engine RPM x 1.38
One of the most common causes for faulty-pump performance is corrosion inside the pump. Flush pump and
entire system with a solution that will chemically neutralize the liquid pumped. Mix according to the
manufacturer’s directions. This will dissolve most residue remaining in the pump, leaving the inside of the
pump clean for the next use.