Graco Fusion CS 312666F Manual page 33

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 Liq-
uid.
Excessive ClearShot Liquid dos-
ing; producing less than 1000
doses per cartridge.
ClearShot Liquid cartridge instal-
lation or removal is difficult.
ClearShot Liquid cartridge is
pressure locked in cartridge bore.
312666F
CAUSE
Damaged air valve o-rings (4d).
Damaged piston o-rings (4a, 4c). Replace. See Piston, page 42.
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.
Troubleshooting
SOLUTION
Replace. See Air Valve, page 43.
Replace. See Air Valve, page 43.
Replace. See Parts, page 44.
Inspect front cover for flat tips
296416 and for round tips
296414.
Cartridge Installation/Removal ,
page 23.
Prime dosing pump. See Clear-
Shot Liquid Cartridge Installa-
tion/Removal , page 23.
Replace. See ClearShot Liquid
Cartridge Installation/Removal ,
page 23.
Replace. See ClearShot Liquid
Cartridge Installation/Removal ,
page 23.
Repair. See Piston, page 42.
Regulate air supply to gun.
Regulate air supply to 80 psi (0.56
MPa, 5.6 bar).
Repair or clean o-rings. See Pis-
ton, page 42.
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 Clear-
Shot Liquid Cartridge Installa-
tion/Removal , page 23.
33