Graco Fusion CS Series Instructions Manual page 32

Troubleshooting
PROBLEM
Steady air leakage from muffler.
Air leakage from front air valve.
Air leak between handle and fluid
housing.
Cannot tighten front cover
retainer (20) until it bottoms out.
Gun does not dose ClearShot
Liquid.
Excessive ClearShot Liquid
dosing; producing less than 1000
doses per cartridge.
ClearShot Liquid cartridge
installation or removal is difficult.
ClearShot Liquid cartridge is
pressure locked in cartridge bore.
32
CAUSE
Damaged air valve o-rings (4d).
Damaged piston o-rings (4a, 4c). Replace. See Piston, page 41.
Damaged air valve o-rings (4d).
Damaged o-ring (2c or 2d).
Installing round mix chamber front
cover on a flat tip gun.
Empty ClearShot Liquid cartridge. Replace. See ClearShot Liquid
ClearShot Liquid dosing pump is
not primed.
Damaged cartridge o-rings.
Damaged or cracked cartridge.
Damaged dosing piston.
Non-regulated air supply to gun.
Excessive air pressure at gun.
Damaged or dirty o-rings on air
piston and/or dosing piston.
Friction between cartridge o-rings
and cartridge bore.
Cartridge is empty. Temporary
cartridge pressure lock.
SOLUTION
Replace. See Air Valve, page 43.
Replace. See Air Valve, page 43.
Replace. See Parts, page 44.
Inspect front cover for flat tips
256416 and for round tips
256414.
Cartridge Installation/Removal,
page 22.
Prime dosing pump. See
ClearShot Liquid Cartridge
Installation/Removal, page 22.
Replace. See ClearShot Liquid
Cartridge Installation/Removal,
page 22.
Replace. See ClearShot Liquid
Cartridge Installation/Removal ,
page 22.
Repair. See Piston, page 41.
Regulate air supply to gun.
Regulate air supply to 80 psi (0.56
MPa, 5.6 bar).
Repair or clean o-rings. See
Piston, page 41.
Lubricate cartridge o-rings and/or
cartridge bore with a few drops of
ClearShot Liquid. See, page 22.
Engage piston safety lock and
trigger gun 20 times to bleed
pressure in cartridge. See
ClearShot Liquid Cartridge
Installation/Removal, page 22.
312666W