Multi-Purpose Spray Gun
Troubleshooting Chart
Symptom
Spray pattern too small
Unsatisfactory spray
pattern
Too much spray mist
Leakage around fluid
packing nut
Leakage around
canister and canister
cover
Orange Peel
(Rough rolling
appearance similar to
an actual orange
peeling)
Runs and sags
Mottled, rough surface
finish
Possible Cause(s)
1.
Dried material lodged in
openings of air cap
2.
Lumpy material
3.
Not enough material
4.
Insufficient fluid pressure
1.
Material too heavy
2.
Dirty air cap
3.
Too much material being
applied
4.
Spray pattern too wide
1.
Too much air pressure for
material being sprayed
2.
Material too thin
1.
Packing too loose
2.
Worn or dry packing
1.
Canister gasket not seating
properly
2.
Canister not tightened
securely
1.
Material drying too fast
2.
Gun too far from surface
3.
Material too thick
1.
Material too thin
2.
Moving gun too slow
3.
Excessive material flow
4.
Gun too close to surface
1.
Too much thinner
2.
Poor spray technique
Corrective Action
1.
Clean air cap
2.
Thin and strain material
3.
Open fluid control knob further
4.
Increase air pressure. Do not exceed 50 psi
1.
Thin material
2.
Clean
3.
Close fluid control knob to reduce material flow
4.
Close fluid control knob further or move closer to the work
1.
Reduce air pressure
2.
Mix with thicker material. Reduce air pressure. Open fluid
control knob gradually
1.
Tighten packing nut. Replace packing if tightening does
not stop leakage
2.
Replace or lubricate with non-silicone oil
1.
Clean gasket. Replace if necessary
2.
Tighten securely. Apply a small amount of Vaseline
mineral type grease on the threads when assembling the
canister to the canister cover
1.
Use a slower solvent or add a retarding agent
2.
Move gun closer to surface
3.
Thin material per thinning instructions
1.
Add material to increase thickness
2.
Move gun more quickly
3.
Turn material control knob clockwise to reduce flow
4.
Move gun further from surface
1.
Reduce thinner
2.
Refer to "Operation" for spraying instructions
6
or
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