Xm Setup And Tips - Graco XM Series Operation

XM Setup and Tips

Follow the Initial System Setup procedures starting on
page 17 and Basic Operation procedures starting on page
32 to get the system ready to spray. Below are a few
additional tips that will ensure your system keeps running
smoothly
Air Supply
•
Ensure that the solenoid air filter/regulator behind the
air panel is set to at least 80-85 psi. See Alarm Codes
and Troubleshooting on page 64.
•
Check that the air filter element in the solenoid air
filter/regulator behind the air panel is clean.
Calibration
•
Adjust the B side fluid restrictor so that the calibration
bar graph averages center to right middle. This means
that the "B" dosing valve is open 25% to 75% of the
time.
•
Ensure dosing valve needle packing nuts are not
adjusted too tight. They should be snug when there is
no fluid pressure on the valve.
312359R
Motor Icing
Air motors accumulate ice in the exhaust valving and
muffler under hot and humid conditions or under cold
ambient conditions. It can cause pressure loss or motor
stalling.
•
The 'B' fluid pressure should always be 15% to 30%
higher than 'A' pressure.
•
A larger pressure difference indicates 'A' motor icing.
• A smaller or negative pressure difference indicates 'B'
motor icing.
•
Ensure that the XL motor de-ice bleed valves are open
to bleed warm air across the ice if icing becomes an
issue.
•
Ensure that the motor is left active when not spraying
to keep the internal bleed air working. Leave the motor
active in Spray mode or Manual mode to keep the
bleed air on.
Restrictions or Lost Pressure
•
Always use filter screens in the XM pump lowers. Filter
style pumps come with 60 mesh screens. Optional 30
mesh elements are also supplied.
•
Always use a gun filter. 60 mesh is provided in the gun.
Check that the static mixer is clean.
•
Early mix manifolds (2009) had a 40 mesh screen on
the B side. The screen could plug with materials that
have filled 'B' side fluids.
XM Setup and Tips
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