Graco Pro Xp H60M10, Instructions Manual

Page: 36 / 70

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