DeVilbiss GTI PRO LITE - Starved spray pattern; Excessive overspray; Dry spray

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Troubleshooting Possible Problems in Operation (cont)
Starved spray pattern Inadequate material flow
Blocked vent in Cup lid
Low atomisation air pressure
Wind fluid adjusting knob out or
change to larger fluid nozzle size
Clean lid and unblock vent
Increase air pressure and rebalance
gun.
Excessive overspray Air pressure to high.
Gun too far from work surface.
Reduce air pressure.
Adjust to correct distance.
Dry spray Air pressure too high.
Gun too far from work surface.
Gun motion too fast.
Fluid flow too low.
Reduce air pressure.
Adjust to correct distance.
Slow down.
Wind out needle adjusting screw or
use larger nozzle size.
Fluid leaking from packing nut Packing worn. Replace.
Fluid leaking or dripping from
front of gun
Fluid nozzle or fluid needle worn or
damaged.
Foreign matter in fluid nozzle.
Fluid needle dirty or stuck in needle
packing
Wrong size fluid needle or fluid
nozzle.
Replace fluid nozzle and fluid needle.
Clean.
Clean.
Replace fluid nozzle and fluid needle.
Fluid dripping or leaking from
bottom of cup
Cup loose on gun.
Cup fluid inlet seat dirty.
Tighten
Clean.
Runs and sags Too much material flow.
Material too thin.
Gun tilted on an angle, or gun
motion too slow.
Turn fluid adjusting knob clockwise or
switch to smaller fluid nozzle and fluid
needle size.
Mix correctly or apply light coats.
Hold gun at right angle to work and
adapt to correct gun technique.