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9. Maintenance and Troubleshooting
– 19 –
EN
Problem Possible Cause Remedy
The uid in the paint cup bubbles or
boils.
The paint cup is not sealed or is not
tightly attached to the spray gun.
Clean, tighten or replace the paint
cup as appropriate.
The spray gun is being held at an
ineective angle.
Hold the spray gun in a more
upright position.
The openings in the air cap are
clogged or damaged.
Clean the air cap (see 9.2) or
replace the part if necessary.
Contact Draper Tools for repair and
replacement options.
The centre of the spray pattern is
too narrow or the whole pattern is
not wide enough.
The uid viscosity is not appropriate
for the spray gun and must be
adjusted.
Increase the uid viscosity for a
thicker centre; decrease the uid
viscosity for a broader pattern.
Air is leaking from the air cap. The air valve is sticking or bent. Clean the air valve and replace it if it
is bent or damaged. Contact Draper
Tools for repair and replacement
options.
The air valve seal or spring is
broken.
Replace the parts as necessary.
Contact Draper Tools for repair and
replacement options.
The tool does not spray the uid. The air pressure at the spray gun is
too low.
Check and regulate the air pressure
accordingly.
The uid control dial setting is
too low.
Rotate the uid control dial
clockwise to increase the ow.
The uid is too viscous. Thin the uid as appropriate.
The uid level in the paint cup is
too low.
Top up the uid in the paint cup.
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