Graco HVLP-Turbine Gun, Instructions-Parts List Manual

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Troubleshooting
309205R 21
No or slow fluid flow, intermittent
spray, or fluttering spray Wrong size fluid set being used or
o-ring on nozzle missing Select proper fluid set for fluid being
sprayed, page 8. Or put an o-ring on
nozzle.
Gun fluid nozzle blocked by dried
paint or damaged Clean or replace fluid nozzle.
Cup or pressure pot cover not tight
enough or gasket damaged Tighten cover or replace gasket.
Cup or pressure pot fluid tube
blocked by dried paint or damaged Clean or replace fluid tube.
Air flow to cup blocked To check, remove cup (leave cover
connected). Trigger gun and check
air flow out of duckbill valve. If air is
not flowing freely, clean or replace
duckbill valve.
Needle packings not properly
adjusted.
Note: Fluid loss through packings
affects fluid pressure and causes a
fluid leak from gun body.
Clean gun body with solvent and
brush provided. Adjust needle pack-
ings.
Plugged inlet strainer Replace strainer if plugged or remove
strainer if material is high viscous.
Fluid leaks at fluid nozzle after trigger
is released Needle not seating in fluid nozzle Check for a loose fluid nozzle or a
bent nozzle or needle; tighten nozzle
or replace parts as needed.
Poor spray pattern Air cap horn hole and/or fluid nozzle
plugged Soak air cap and/or fluid nozzle in
solvent. Clean air cap horn holes with
non-metallic item to avoid perma-
nently damaging them. Page 14.
Problem Cause Solution