Master Manufacturing 15/25 Gallon New Direction Trailer Sprayer - Manual (Page 7)

New Direction Trailer Sprayer
4.) Optimum boom height is 14 to 15 inches above area to be sprayed. Use the location holes in the
upright spray boom brackets as adjustments to obtain the optimum spray height.
Spray Wand
1.) Attach sprayer wand hose (33-103153-180) to sprayer manifold with hose clamp (SHC-F).
Wiring Harness
1.) Operating power is obtained directly from a 12 VDC source. Be sure to connect the red to the
positive (+) source and attach the black to the negative (-) source.
IMPORTANT: Before spraying chemicals, fill the tank half full of plain water to allow familiarization
with the sprayer and to prevent waste of expensive chemicals
.
Operation
Using the boom nozzles

Four things must be considered before spraying with the boom.
1. How much chemical must be mixed in the tank?
2. Rate of spray (gallons per acre to be sprayed.)
3. What pressure (P.S.I) will be used.
4. Speed traveled (M.P.H.) while spraying.
5. Boom height and spray pattern

Refer to the chemical label to determine the chemical mixture.

See the tip chart to determine the pressure, speed and rate of spray to be used for your application.

Check the spray pattern with water only. Usually you can see the coverage better on a solid concrete
surface, such as a driveway.

Raise or lower the nozzles so that you will have a good coverage pattern. If you can see dry spots on the
concrete surface you will need to raise the nozzles. Too much solution in the pattern areas means you
need to lower the nozzles. Generally the proper height will be from 13 inches to 18 inches from the
ground.
Operation and calibration
The nozzles on the boom will spray an 80” wide swath. The nozzle height is approximately 15” above the
object being sprayed.
Once you know how much you are going to spray then determine (from the tip chart) the spraying pressure
(PSI) and the spraying speed (MPH). The pressure can be set by running the sprayer with the boom nozzles
“ON” and then by adjusting the bypass valve lever until the gauge reads the desired pressure. Notice that the
pressure will go up when the garden hose valve is slowly closed.
When selecting pressure from the tip chart, it is a good idea to try for the 20 or 30 PSI range as this allows an
excellent nozzle pattern. At 10 PSI the pattern begins to break up and at 40 PSI you may notice some drift.
Conditions of weather and terrain must be considered when setting the sprayer. Do not spray on windy days.
Protective clothing must be worn in some cases. Be sure to read the chemical label carefully. Before spraying
chemicals, fill the tank half full of plain water to allow familiarization with the sprayer and to prevent waste of