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Problem
Metering pumps do not run when Run
Mode is selected and the blue LED is illu-
minated.
Pump Test completes without error, but A
or B component has more than 750cc of
fluid in beaker.
Batch Test completes without error, but A
or B component has more fluid in beaker
than displayed on screen.
Sprayer does not start when start button
is pressed.
Fluid valves leaking at rod.
Fluid valve leaking between main and
outlet housings.
Material does not cure consistently.
3A2776H
Cause
Air pressure to metering pumps too low
Air pressure to metering valves is too low. Check air regulator behind main air
Circulation valves or mix manifold ball
valves are not open.
Air pilot lines are obstructed
Solenoid valve stuck.
Air pilot valve(s) to motor stuck.
Metering valve(s) not opening.
Air motor stalled.
Incorrect metering pumps were selected
in System Setup screens.
Air is trapped in fluid due to excessive
agitation, circulation, and heat. Fluid is
measured by volume when it is com-
pressed under pressure.
See causes for previous pump test prob-
lem.
Faulty start switch or wire harness.
Faulty stop switch or wiring harness.
Loose or worn packings.
O-ring on seat has failed.
Ratio not set correctly.
Material not mixing correctly.
Material not properly conditioned before it
was added to sprayer.
Not using enough integration hose.
Troubleshooting
Solution
Increase pressure to 50 psi (0.35 MPa,
3.5 bar) or greater.
panel. Should be 80-85 psi
(0.55-0.59 MPa, 5.5-5.9 bar).
Open ball valves.
Check pilot lines for kinks or pinches.
Actuate solenoid manually, if it does not
operate, replace solenoid. See the XM
PFP repair manual.
Replace valve(s). See XM PFP repair
manual.
Service or replace valve(s). See XM PFP
repair manual.
See manual 311238.
See Appendix A - User Interface Dis-
play beginning on page 68.
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.
See solutions for previous pump test
problem.
Check start switch and wiring harness
continuity; switch is normally open circuit.
See Electrical Schematics in the XM PFP
repair manual.
Check stop switch and wiring harness
continuity; stop switch is normally closed
circuit. See Electrical Schematics in the
XM PFP repair manual.
Tighten packing nut. If leak continues,
replace packings.
Replace both o-rings on that seat.
Check that correct ratio is set and set by
volume.
Test metering pump. Make sure mixer is
clean; flush as needed.
Position mixer after integrator hose.
Mix material thoroughly.
Add more integration hose.
Select "fast dosing" in setup.
65
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