Graco A Series Instructions - Parts Manual page 29

PROBLEM
Loss of round pattern.
Loss of flat pattern.
Pressure imbalance.
Fluid mist from CeramTip.
Excessive overspray.
Rapid buildup of material on air cap.
Fluid does not shut off when fluid
valves are closed.
Reduced cleanoff air.
Air leakage around fluid housing.
Air leakage from safety lock.
Burst of air from muffler when gun is
triggered.
Steady air leakage from muffler.
Air leakage from front air valve.
309856A
CAUSE
Dirty CeramTip (40).
Plugged CeramTip (40).
Worn CeramTip (40).
Plugged impingement ports.
Plugged check valves (36).
Viscosities not equal.
Worn Polycarballoy Mix Module (39). Replace, page 36.
Worn front rod seal (46).
Too much cleanoff air.
Too little cleanoff air.
Damaged fluid valves (12b).
Plugged air passage.
Damaged or missing o-ring (20).
Damaged or missing o-rings (18).
Normal.
Damaged air valve o-rings (24)
Damaged piston o-rings (16, 19).
Damaged air valve o-rings (24).
Troubleshooting
SOLUTION
Clean, page 24.
Clean in compatible solvent.
Replace, page 32.
Clean, page 22. Reinstall Polycarbal-
loy Mix Module, page 36.
Clean, page 38.
Adjust temperature to compensate.
Replace, page 37.
Reduce, page 12.
Increase, page 12.
Replace.
Open.
Replace.
Replace, page 39.
No action required.
Replace, page 41.
Replace, page 39.
Replace, page 41.
29