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– 22 –
EN
11. Maintenance and Troubleshooting
Problem Possible Cause Remedy
The uid in the paint cup bubbles or
boils.
The cup is not sealed or is not
tightly attached to the tool.
Clean, tighten or replace the cup as
appropriate.
The tool is being held at an
ineective angle.
Hold the tool in a more upright
position.
The openings in the air cap are
clogged or damaged.
Clean the air cap (see 11.2) or
replace the part if necessary.
Contact Draper Tools for repair and
replacement options.
The tool does not spray the uid. The air pressure at the tool is too
low.
Check and regulate the air pressure
accordingly.
The uid control dial setting is too
low.
Rotate the uid control dial or
nozzle clockwise to increase the
ow.
The uid is too viscous. Thin the uid as appropriate.
The uid level in the cup is too low. Top up the uid in the cup.
Paint Spray Gun
The spray gun delivers a curved or
one-sided spray pattern.
The openings in the air cap or
nozzle are clogged or damaged.
Clean the air cap (see 11.2) and
nozzle or replace the parts if
necessary. Contact Draper Tools for
repair and replacement options.
The spray pattern is too thick. The uid viscosity is too high. Thin the uid as appropriate.
The air pressure at the nozzle is too
low.
Increase the air pressure and check
the tool for leaks or blockages.
The uid needle or nozzle head has
become worn and the separation
between them has increased.
Replace the nozzle head or uid
needle as appropriate. Contact
Draper Tools for repair and
replacement options.
The spray pattern is too thin. The uid viscosity is too low. Thicken the uid as appropriate.
The air pressure at the nozzle is too
high.
Decrease the air pressure and check
the tool for blockages.
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.
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