Gun Operation Troubleshooting - Graco Pro Xp H60T10 Instructions Manual

Troubleshooting
Gun Operation Operation Troubleshooting Troubleshooting
Gun Gun Operation Troubleshooting
Problem Problem Problem
Excessive spray fog.
"Orange Peel" finish.
Fluid leaks from the fluid packing
area.
Air leaks from the front of the gun.
Fluid leakage from the front of the
gun.
Gun does not spray.
Dirty air cap.
Excessive paint wrap back to
operator.
36
Cause Cause Cause
Atomizing air pressure too high.
Fluid too thin.
Atomizing air pressure too low.
Spray tip is too large.
Poorly mixed or filtered fluid.
Fluid too thick.
Worn fluid needle packings or rod.
Air valve is not seating properly.
Worn or damaged fluid needle ball. See
Worn fluid seat housing.
Loose spray tip.
Damaged tip seal.
Low fluid supply.
Damaged spray tip.
Dirty or clogged spray tip.
Damaged fluid needle.
Damaged or plugged air cap.
Poor grounding.
Incorrect distance from gun to part. Should be 8–12 in. (200–300 mm).
Solution Solution Solution
Close atomizing air valve part way,
or decrease air pressure as low
as possible; minimum 45 psi (0.32
MPa, 3.2 bar) needed at gun for
full voltage.
Increase viscosity or increase fluid
flow rate.
Open atomizing air valve more or
increase gun air inlet pressure;
use lowest air pressure necessary.
Use smaller tip. See Spray Tip
Selection Chart, page 61.
Remix or refilter fluid.
Reduce viscosity.
Replace packings. See
Needle Replacement, page
Replace air valve. See
Air Valve Repair, page
Fluid Needle Replacement,
page 44.
See Air Cap, Spray Tip, and Fluid
Seat Housing Replacement, page
40.
Tighten retaining ring.
See Air Cap, Spray Tip, and Fluid
Seat Housing Replacement, page
40.
Add fluid if necessary.
Replace.
Clean. See
Clean the Gun Daily, page
See Fluid Needle Replacement,
page 44.
Clean air cap. See
Clean the Gun Daily, page
See Grounding, page 17.
Fluid
44.
50.
30.
30.
3A2495K