5
USER MANUAL
HVLP Gravity Spray Gun
JEFA048
6. Troubleshooting
Problem
Cause
Solution
1. Gun leaks from fluid tip
Foreign substances between fluid tip
and needle prevent sealing
Clean fluid needle and fluid
nozzle in thinner or replace
with a full nozzle set
2. Paint merges from fluid
needle or needle sealing
Self tensioning needle sealing
damaged or lost
Replace needle sealing
3. Spray pattern in sickle-
shaped
Horn air holes or air circuit clogged
Soak in thinner, afterwards
clean with the nozzle - clean-
ing needle
4. Drop like or oval shaped
pattern
Dirt on fluid pin tip or air outlet
•
Turn air nozzle by 180
degrees
•
lf defective pattern remains,
clean fluid tip pin and air
circuit
5. Paint Spray flutters
•
Insufficient volume in the cup
•
Fluid nozzle is loose
•
Needle sealing damaged,
•
Nozzle set dirty or damaged
Refill material, tighten parts, if
necessary clean or replace
parts
6. Material bubbles or boils
in paint cup
•
Atomization air flows through the
paint channel to the cup
•
The paint nozzle is loose
•
Air nozzle is not screwed in tight
•
The air nut is clogged and the seat
is defective
•
Nozzle insert is damaged
Tighten parts accordingly,
clean or replace
