Troubleshooting - Husky H4840GHVSG Guide D'utilisation Et D'entretien

Troubleshooting

Problem
Heavy spray pattern to the left
or right of the paint surface .
Heavy spray pattern to the top
or bottom of the paint surface .
Spray gun emits split spray
pattern .
The spray gun emits split spray
pattern .
The spray gun emits sputtering
spray pattern .
Air is leaking from the air cap
without pulling the trigger .
Fluid leaking from fluid tip of
spray gun .
The spray gun emits excessive
overspray .
The spray gun will not spray .
Possible Cause
□ Holes in the left or right side of the air cap
are plugged .
□ Dirt on the left or right side of the fluid tip .
□ Dried material at the top or bottom of the
fluid tip .
□ The air cap is loose or the seat is dirty .
□ The air cap is plugged .
□ The fan pattern is open too far .
□ The fluid control is turned too far .
□ The atomization air adjustment is too high .
□ The fan adjustment is partially closed .
□ The paint material is too thick .
□ Atomization pressure is too low .
□ The material level is too low .
□ The container is tipped too far .
□ Loose fluid inlet connection .
□ Loose or damaged fluid tip / seat .
□ Dry or loose fluid needle packing nut .
□ The air vent is clogged .
□ The air valve stem is sticking .
□ There is contaminate on the valve or seat .
□ The air valve or seat is worn or damaged .
□ The air valve spring is broken .
□ Valve stem is bent .
□ The packing nut is too tight .
□ The fluid tip is worn or damaged .
□ There is foreign matter on the tip .
□ The fluid needle spring is broken .
□ The atomization pressure is set too high .
□ The spray gun is held too far away from the
work surface .
□ Improper stroking (arcing, gun motion too
fast) .
□ There is no air pressure at the gun .
□ The fluid control is not open enough .
□ The material is too heavy .
Solution
□ Use only non-metalic paint .
□ Clean the air cap .
□ Clean the fluid tip .
□ Use only non-metalic paint .
□ Clean the fluid tip .
□ Clean and tighten the air cap .
□ Partially close the pattern adjustment .
□ Increase fluid using the fluid control
knob .
□ Reduce the atomization air pressure .
□ Open the fan pattern adjustment .
□ Thin paint material to proper viscosity .
□ Increase the atomization pressure .
□ Refill the paint cup .
□ Hold the spray gun upright .
□ Tighten the fluid cap .
□ Adjust or replace the fluid tip or seat .
□ Lubricate and tighten the fluid needle
and packing nut .
□ Clear the vent hole .
□ Lubricate the valve stem .
□ Clean air valve or seat .
□ Replace air valve or stem .
□ Replace air valve spring .
□ Replace valve stem .
□ Adjust the packing nut .
□ Replace the tip and / or needle .
□ Clean the fluid tip .
□ Replace fluid needle spring .
□ Reduce the atomization pressure .
□ Adjust to the proper distance .
□ Move the spray gun at a moderate
pace, parallel to the surface .
□ Check the air lines .
□ Open fluid control .
□ Thin the material or change over to a
pressure feed system .
9
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