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9. Maintenance and Troubleshooting
– 18 –
EN
9.4 Troubleshooting
Problem Possible cause Remedy
Paint leaks from the nozzle when
not in use.
Dust or dirt around the nozzle
opening or uid needle is
preventing an airtight seal with the
paint cup.
Clean the uid needle and nozzle
head (see 9.2).
The nozzle head or uid needle is
damaged.
Replace the nozzle head or uid
needle as appropriate. Contact
Draper Tools for repair and
replacement options.
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 9.2) 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 spray output splutters or is
inconsistent.
The uid level in the paint cup is too
low.
Top up the uid in the paint cup.
Air is mixing with the uid due to a
leak or broken seal.
Check the tightness of the paint
cup and the uid needle bolt beside
the trigger.
The uid needle does not create a
seal against the inside of the nozzle
head when the trigger is released.
Clean or replace the uid needle
and nozzle head as necessary.
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