Graco Fusion CS 312666F Manual page 32

Troubleshooting
PROBLEM
Leakage between flat tip and mix
chamber.
Pressure imbalance.
A and/or B fluid in gun air section. Damaged side seals (42, 43).
Fluid mist from mix chamber.
Rapid buildup of material on air
cap.
Reduced cleanoff air.
Excessive purge air when fluid
valves are closed and gun is
de-triggered.
Fluid does not shut off when fluid
valves are closed.
Burst of air from muffler when gun
is triggered.
32
CAUSE
Tip not seated properly.
Damaged/missing o-ring (47).
Plugged impingement ports.
Plugged check valves (44, 45).
Viscosities not equal.
Plugged fluid screens.
Damaged mix chamber (14).
Damaged side seal o-rings (42d,
42e).
Tightened flat tip retainer with
fluid valves (1b) open.
Damaged side seals (42, 43).
Damaged side seal o-rings (42d,
42e).
Damaged mix chamber (14).
Dosed ClearShot Liquid normal.
Plugged front cover holes.
Damaged/missing fluid housing
o-ring (2b or 2c).
Damaged front o-ring (2b).
Damaged fluid housing o-ring
(2d).
Damaged/missing fluid housing
o-ring (2c).
Damaged fluid valves (1b).
Normal.
SOLUTION
Reassemble. See Flat Spray
Tips, page 19.
Replace. See Flat Spray Tips,
page 19.
Clean Impingement Ports, page
29.
Clean. See Check Valves, page
41.
Adjust temperature to compen-
sate.
Clean. See Clean or Replace
Fluid Screens, page 27.
Replace. See Mix Chamber and
Side Seal Assemblies, page 38.
Replace. See Mix Chamber and
Side Seal Assemblies, page 38.
Replace. See Mix Chamber and
Side Seal Assemblies, page 38.
Close valves first.
Replace. See Mix Chamber and
Side Seal Assemblies, page 38.
Replace. See Mix Chamber and
Side Seal Assemblies, page 38.
Replace. See Mix Chamber and
Side Seal Assemblies, page 38.
No action required.
Clean or Replace Front Cover
and Retainer, page 26.
Replace. See Parts, page 44.
Replace. See Parts, page 44.
Replace. See Parts, page 44.
Replace. See Parts, page 44.
Replace. See Parts, page 44.
No action required.
312666F