Woodstock W1798 - Manual (Page 14)

Model W1798 Professional Spray Gun
-12-
Troubleshooting
Symptom Possible Cause Possible Solution
Fluttering or
Spitting spray. 1. Dry or worn fluid tip seat
permits air to seep into fluid
passage.
2. Material level too low.
3. Fluid tip or strainer is
blocked.
4. Dry needle packing.
1. Tighten fluid tip or replace
seat with new one.
2. Add material.
3. Clean.
4. Lubricate needle.
Uneven top or bot-
tom pattern. 1. Atomizing cap holes are
obstructed.
2. Build-up on top or bottom of
fluid tip.
3. Build-up on atomizing cap is
on needle seat.
1. Clear holes.
2. Clean.
3. Clean.
Right or left arc
pattern. 1. Left or right side horn holes
are plugged.
2. Build-up on left or right side
of fluid tip.
3. Build-up of material inside
atomizing cap.
1. Clear holes.
2. Clean.
3. Clean.
Heavy deposit of
material in center. 1. The material flow exceeds
the atomizing cap capacity.
2. Inlet air pressure is too low.
3. Material is too thick.
1. Lower fluid flow.
2. Increase inlet air pressure.
3. Thin material.
Narrow center pat-
tern. 1. Volume control turned in too
far.
2. Inlet air pressure too high.
3. Fluid pressure is too low.
4. Material is too thin.
1. Increase volume.
2. Reduce inlet air pressure.
3. Increase fluid pressure.
4. Adjust material.
No spray output. 1. No pressure at gun.
2. Fluid passages dirty.
3. Fluid control closed.
4. Out of paint.
1. Check air supply.
2. Clean gun, remove any
obstructions.
3. Open.
4. Refill.