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Operating the Sprayer
Before starting spraying each day, squirt upper packing
lubricant (Part No. 9992504) into the slots in the upper pump
housing.
This lubricant keeps the piston seals pliant, minimizing paint
bypass and piston wear. If the unit is operated several hours a
day, lubricate approximately every 4 hours.
For a new unit, follow the purging steps above. For units
already in service, purge water or solvent from the system as
described above, depending on the type of paint being used.
After the pump is ready to spray, it may also be necessary to
purge the hoses of water or solvent.
1. Make certain that the current limit switch is on the desired
setting.
2. Turn the pressure control knob counterclockwise to the
lowest setting.
3. Set the PRIME/SPRAY valve to SPRAY.
4. Be sure that the spray gun does not have a tip installed.
5. Turn the gun safety switch to unlock the gun.
6. Turn the pressure control knob clockwise to the halfway
point to increase the pressure.
7. Trigger the gun into a waste container until solvent or
water is purged from the hose.
If a metal container is used, it is necessary to ground the
spray gun and container. To do this, hold a metal portion
of the gun against the edge of the metal container. Failure
to do so may lead to static electric discharge, which may
cause a fire.
8. Turn the pressure control knob counterclockwise to its
lowest setting.
9. Turn the PRIME/SPRAY knob to PRIME.
10. Trigger the gun to be sure no pressure is left in the hose.
11. Turn the gun safety switch to lock the gun off.
12. Install the spray tip appropriate for the material being
sprayed. The thicker the paint, the larger the spray tip
required.
13. Set the PRIME/SPRAY valve to SPRAY.
14. Turn the pressure control knob clockwise to its highest
setting.
15. Turn the gun safety switch to unlock the gun.
16. Trigger the gun to test the spray pattern. Spray against a
scrap piece of cardboard or other test surface.
17. Adjust the unit to the proper pressure setting.
WARNING
NOTE: Do not apply so much that it overflows and
drips into the paint.
6 © SprayTECH Corporation. All rights reserved.
Setting the pressure
The best pressure setting will vary with the type of paint and
the size and type of spray tip being used. The thicker the
paint, the higher the pressure will need to be.
To find the optimum pressure setting:
1. Turn the pressure control knob clockwise to its highest setting.
2. Trigger the gun and slowly turn the pressure control knob
counterclockwise. Stop when you reach the lowest pressure
necessary to keep the desired spray pattern and atomization.
Using the spray gun
Follow the instructions that came with your spray gun.
Pressure relief procedure
1. Turn the gun safety switch to lock the gun closed.
2. Turn the motor ON/OFF switch to OFF.
3. Place the return line into a container and hold it securely in place.
4. Turn the PRIME/SPRAY valve to the PRIME. The pressure will
be relieved and fluid will dump through the return tube.
5. Relieve any pressure remaining in the hose by turning the
gun safety switch to unlock the gun and triggering the gun
into a container.
Always ground the container, including the handle.
Failure to do so may result in a static electric discharge,
which may cause an explosion or fire.
6. Turn the gun safety switch to lock the gun closed.
Priming the sprayer
1. Turn the PRIME/SPRAY valve to the PRIME.
2. Put the suction tube into the paint container.
3. Turn the pressure control knob counterclockwise to the
lowest setting.
4. Turn the ON/OFF switch to ON.
5. Slowly turn the pressure control knob clockwise until the
paint begins to flow through the return tube.
6. Turn the pressure control knob counterclockwise to the
lowest setting.
7. Set the PRIME/SPRAY valve to SPRAY.
8. Turn the gun safety switch to unlock the gun.
If a metal container is used, it is necessary to ground the
spray gun and container. To do this, hold a metal portion of
the gun against the edge of the metal container. Failure to do
so may lead to static electric discharge, which may cause a
fire.
9. Trigger the gun into a waste container. Hold it open while
slowly turning the pressure control knob clockwise until paint
sprays from the gun tip. Keep the gun triggered until all the
air is forced out of the system and paint is flowing freely.
10. Release the trigger and turn the gun safety switch to lock
the gun closed.
11. Check all fluid connections for leaks. If any are found, follow
the pressure relief procedure before tightening the connection.
WARNING
NOTE: Leave the PRIME/SPRAY valve on PRIME until
you are ready to operate the sprayer again.
WARNING
NOTE: Until you are satisfied with the spray pattern,
spray on a test surface rather than on the
surface to be painted.
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