Purging the System for Solvent-Based Paint
1. Place a container of paint under the paint suction tube.
Have a waste container ready to catch the purged fluid.
2. Detach the return tube from the fluid section and secure it
in the waste container so that it will not come out.
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.
3. Turn the pressure control knob counterclockwise to the
lowest setting.
4. Set the PRIME/SPRAY valve to the PRIME.
5. Turn the ON-OFF switch to ON.
6. Turn the pressure control knob clockwise slowly until fluid
starts coming through the return tube. Use the least
amount of pressure necessary to keep the fluid flowing.
When all of the test fluid has been cleaned out of the
system, paint will flow through the return tube.
7. Turn the pressure control knob to its lowest setting.
8. Place the return tube into the operating position above the
paint container. Keep recirculating paint through the
system until the paint coming through the return tube is
free of air bubbles.
9. The unit is now ready to use.
PRIME
SPRAY
PRIME/SPRAY Valve
Pressure Control
Knob
WARNING
Return Tube
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. Move the gun’s trigger lock to the unlocked position.
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. Move the gun’s trigger lock to the locked position.
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. Move the gun’s trigger lock to the unlocked position.
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.
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