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Troubleshooting
313289S 21
Pumps do not run when Run Mode is
selected and the blue LED is illuminated.
Air pressure to pumps too low Increase pressure to 50 psi (0.35 MPa,
3.5 bar) or greater.
Air pilot lines are obstructed Check pilot lines for kinks or pinches.
Solenoid valve stuck. Actuate solenoid manually, if it does not
operate, replace solenoid. Page 32.
Air pilot valve(s) to motor stuck. Replace valve(s). Page 42.
Metering valve(s) not opening. Service or replace valve(s). Page 42.
Air motor stalled. See manual 311238.
Pump Test completes without error, but A
or B component has more than 750cc of
fluid in beaker.
Incorrect pumps were selected in System
Setup screens.
See Appendix A in manual 312359.
Air is trapped in fluid due to excessive
agitation, circulation, and heat. Fluid is
measured by volume when it is com-
pressed under pressure.
Repeat Pump Test with fresh fluid.
If the specific gravity of each fluid is
known, check samples by weight (750cc
x specific gravity equals weight in grams).
If weight is correct, extra volume in bea-
ker is air.
Batch Test completes without error, but A
or B component has more fluid in beaker
than displayed on screen.
See causes for previous pump test prob-
lem.
See solutions for previous pump test
problem.
Sprayer does not start when start button
is pressed.
Faulty start switch or wire harness. Check start switch and wiring harness
continuity; switch is normally open circuit.
See Electrical Schematics, starting on
page 47.
Faulty stop switch or wiring harness. Check stop switch and wiring harness
continuity; stop switch is normally closed
circuit. See Electrical Schematics, start-
ing on page 47.
Fluid valves leaking. Loose or worn packings. Tighten packing nut. If leak continues,
replace packings.
Paint does not cure consistently. Ratio not set correctly. Check that correct ratio is set and set by
volume. See manual 312359.
Material not mixing correctly. Test pump. Make sure mixer is clean;
flush as needed. See manual 312359.
Position mixer after integrator hose.
Material not properly conditioned before it
was added to sprayer.
Mix material thoroughly.
Not using enough integration hose. Add more integration hose.
Select “fast dosing” in setup.
Poor spray pattern.
Also, see “System runs erratically” below.
Fluid pressure too low. Increase pump pressure.
Fluid temperature too low. Increase fluid temperature.
Spray tip dirty or worn. Relieve pressure. Clean or replace tip.
Follow gun manual instructions.
Fluid A or B filters plugged. Clean filters. See pump manual.
Mixer or hoses partially plugged or too
restrictive.
Inspect parts for cured material. Clean or
replace, or use larger hoses and mixer.
Problem Cause Solution