Graco TexSpray GM 1030 Instructions-Parts List Manual page 14

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PROBLEM
at gun
Loss of air control or volume Loss of air control or volume
at gun
Displacement pump output
low on downstroke or both
strokes
Material leaks into wet-cup
Low fluid delivery
No fluid delivery
Spitting from gun
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material when oun is first tria-
Heavy or poorly atomized
CAUSE
Air passages clogged with material
Piston ball (220) not seating
SOLUTION
After releasing the gun trigger, make sure
the system is fully depressurized before
triggering the gun again. This helps
prevent material backing into gun
passages.
Clean piston area. See page 20.
Piston packings wom or damaged
worn or missing.
Siphon hose coupling gasket
(le)
or missino
Pump cylinder O-ring (205) worn
Replace packings. See page 20.
Replace or install gasket.
Check and replace.
Siphon hose strainer is clogged Clean strainer.
Piston packings worn or damaged Replace packings. See page 20.
Intake valve ball (21 6) not seating Clean and service intake valve. See page
properly 19.
Clutch (9) worn or damaged Replace clutch. See page 26.
Loose wet-cup (202) Tighten wet-cup just enough to stop
Throat packings worn or damaged Replace packings. See page 20.
Displacement rod (201) worn or
damaged
Replace displacement rod. See page
20.
Siphon hose strainer is clogged. Clean or remove strainer.
leakage.
Engine RPM too low
SPRAY mode
Easy Spray Control not set to
Compressor is not on and/or air
hoses are not properly connected
Gun is not fully triggered
Fluid supply is low or empty
Increase throttle setting. See Startup,
Steps 4, page 13.
Reset.
Check and correct.
Squeeze trigger firmly and completely.
page 13. Check fluid supply often to pre-
Refill and prime the-pump. Seestartup,
vent running the pump dry.
Fluid pressure was not allowed to Wait a little longer between releasing gun
fully self relieve after releasing gun trigger and pulling it again.
trigger
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Gun was not fully triggered Always squeeze the trigger fully to
immediately when squeezed,
prevent just the air from turning on,
causing gun air passages to clog
which starts the pump and pressurizes
with material. the hoses. Disassemble and clean gun.
Gun's Air Control Valve is turned Turn valve out for desired atomization.
fully in
Insufficient compressor air Increase SCFM or compressor size.
Sun nozzle too small for applica- Increase nozzle size.
:ion
14 308-269