Master Manufacturing 40/60 Gallon 3-point Sprayer - Manual (Page 2)

ASSEMBLY
Sprayer assembly has been competed at the factory accept for the roller pump that must be supplied by the
customer. This unit is designed to work with a 4 or 6 roller pump that will be attached directly to the tractor
PTO. Depending on pump choice the spray nozzles may need to be changed to deliver optimum spray
coverage. Please refer to the “Boom Operation” section for more information.
Two nylon hose fittings and hose clamps have been provided to join to the pump. Use a good quality thread
sealant on each fitting to prevent leaks. After the fittings have been inserted to the pump, push on the two pump
hoses to the fittings and secure with the clamps provided.
OPERATION
Check the inside of the tank for any foreign objects or material that could cause damage to the pump.
Fill the tank with clean water. It is always better to have the tank at least half full of water before adding the
chemical to avoid possible damage to the sprayer components by an undiluted chemical concentrate.
Before initially running the sprayer, loosen the tee handle of the relief valve. This adjustment should be
checked while spraying because a pressure increase will be noted when the sprayer is shut off and the output of
the pump is by-passed back to the tank through the relief valve.
Limit the pressure to 150 psi. If, when adjusting the relief valve for more pressure, no increase in pressure
occurs, it is an indication that the maximum output of the pump is being used. When the sprayer is shut off the
pump will have to overcome the excessive tightness of the relief valve in order to by-pass back to the tank. This
will cause pump strain and possible damage and should be avoided.
Choose an operating pressure that provides a spray pattern suitable for the particular operation. Follow the
chemical manufacturer’s recommendations for mixing and rates of application carefully. Judge the area
sprayed tank full of spray material carefully to avoid over or under application rates. Do not use your sprayer
for pumping petroleum products, strong acids, paint or other thick materials with heavy viscosity.
General Sprayer Maintenance
Most spray materials are highly corrosive. The most important aspect of long dependable service from the
sprayer is a thorough cleaning immediately following each use. In addition, the residue of one type of chemical
could cause an undesirable effect when a different chemical is used for a different purpose.
The most effective cleaning method is to pump several rinses of clean water through the tank, pump, hose and
spray gun. A neutralizing agent such as a solution of Nutra-Sol, detergent or household ammonia as
recommended by the chemical manufacturer can assist in removal of a persistent chemical. Avoid getting
chemical on the engine and other external parts of the unit in order to preserve the finish. Remove external
spray material deposits when cleaning and flushing unit. A coat of wax applied to the exterior will protect the
paint and make clean up easier.
When the unit is thoroughly cleaned, remove the tank filter bowl and drain the water from the tank, spray gun,
pump boom and spray gun hose.
Troubleshooting
In the event of inefficient operation or malfunction, check the following:
1. Clean the line strainer after each use or more often, if necessary. A plugged strainer will restrict the
flow of liquid to the pump and cause it to perform poorly. Always use clean water and keep the
strainer screen in place. Sandy or gritty liquids will damage the components of the pump.
2. Check the hoses for any kings or leaks. Be sure that suction hose is not collapsed or plugged.
3. Nozzle tips should be removed and cleaned with a toothpick or similar object. Avoid nails, wires,
etc., that could damage the top opening. The nozzle screens of the boom accessory should also be
removed and cleaned periodically. Inspect and replace worn tips to insure satisfactory spraying
performance
Storage
This sprayer should always be cleaned and drained before storage. If the unit will be subjected to freezing
temperatures, it is imperative that the whole sprayer; pump, hoses, spray gun, gauge, etc., be completely drained
and dry. Any water left in the system could cause extensive damage when it freezes. Follow the