Rockair SG-1528H, Operation Manual

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Condition Cause Correction
Split spray pattern Atomization air pressure too high.
Fluid flow too low.
Spreader adjusting valve set too high. Reduce at transformer or gun. lncrease
fluid flow
Adjust.
Unable to get round pattern Pattern adjustment screw not seated
Properly.
Air cap retaining ring loose. No air Clean or replace. Tighten.
Check air supply
No working No air pressure.
Fluid needle not open enough. Fluid too
heavy.
Fluid pressure too low. Check air supply & air lines, blow out
gun air
passages.
Adjust needle screw.
Thin material.
lncrease fluid pressure.
Runs and sags Too much material flow. Material too
thin.
Gun tilted on an angle. Gun motion too
slow. Adjust gun or reduce fluid pressure.
Mix properly.
Hold gun at right angle. Operating
properly.
Excessive Overspray Too much atomization air pressure.
Wrong distance from work surface.
lmproper working speed. Reduce pressure.
Adjust to proper distance. Move at mo-
derate pace, parallel to work surface.
„Orange peel“ surface Thick Gun too close to surface.
Air pressure too low. lmproper thinner.
Material is not properly mixed. Surface
rough, oily, dirty. Check distance. Normally approx. 150-
200mm
Too much material coarsely atomized.
lncrease air pressure or reduce fluid
flow.
Check mixing instruction from material
makers.
Clean and prepare properly.
Fluid leaking from packing nut Packing nut loose. Packing worn or dry. Tighten, do not bind needle. Replace or
lubricate
Fluid leaking or dripping from front of
gun Packing nut too tight.
Dry packing.
Fluid tip or needle worn or damaged.
Foreign matter in tip.
Fluid needle spring broken. Wrong size
needle or tip. Adjust.
Lubricate.
Replace tip and needle with lapped sets.
Clean.
Replace.