Step 2. Wipe the inside of the container with a lacquer solvent-soaked rag. Coat the container
with clear lacquer to inhibit rust. Solvent that is not compatible with lacquer may cause congealing.
Step 3. Shut off the air supply to the pump by turning the adjusting knob on the regulator
counterclockwise until no spring pressure is felt. Remove pressure from the system by pulling the
trigger on the gun, or remove pressure by opening the pressure-release valve on the fluid-strainer
assembly and turning the valve clockwise.
Step 4. Detach the main air-supply hose from the stem at the regulator and attach the hose to
the stem on the lift assembly. This lifts the pump assembly from the fluid container.
Step 5. Remove the fluid container, clean and fill it with approximately 1 gallon of clean
solvent, and replace the pump assembly.
Step 6. Remove the spray cap and strainer assembly from the spray gun, and clean them with
Step 7. Detach the main air-supply hose from the stem on the lift assembly, and reattach the
base to the stem at the regulator. The pump will lower back into the container.
Step 8. Close the pressure-release valve, if it was opened, to relieve the system pressure.
Step 9. Turn the adjusting knob on the regulator clockwise, just far enough so that the pump
will operate slowly when the gun trigger is pulled.
Step 10. Aim the gun nozzle against waste material and hold the trigger back until the fluid in
the pump, hose, and gun has been replaced by solvent.
Step 11. Aim the gun nozzle back into the solvent container, pull the trigger, and circulate the
solvent in this manner until the fluid remaining in the system is suspended in solvent. The cleaning
action will be better if the system pressure is increased at this point. Lift the inspection cap on the
container-cover assembly and aim the nozzle into the container.
Step 12. Remove pressure from the system by pulling the trigger on the gun or remove
pressure by opening the pressure-release valve on the fluid-strainer assembly and turning the valve
Step 13. Turn the handle on the filter cartridge one full turn. Do not turn the handle while the
filter is pressurized, or distortion of the unit cartridge will result. If the handle turns hard, it should not
be forced but the unit cartridge should be removed for thorough cleaning.
Step 14. Repeat steps 4, 5, 7, 8, and 9.