DÖRR EcoGun AS AUTO pro HD, Operation Manual

Page: 21 / 44

Special faults in flat jet nozzle set
Fault description Cause Correction
Spray jet misaligned Air cap is misaligned Rotate air cap into the required posi-
tion
Ä
4.3 “Setting the spray jet”.
Spray jet too strong in
center
Too much material Reduce material feed.
Increase spraying air pressure (A).
Material too viscous Change material consistency.
Horn air pressure too low Raise horn air pressure using the horn
air control (F).
Split spray jet Not enough material Increase material feed.
Reduce spraying air pressure (A).
Material too thin Change material consistency.
Horn air pressure too high Raise horn air pressure using the horn
air control (F).
Cone-shaped spray jet Bores in air cap are soiled Clean and check air cap. Replace air
cap if defective Ä 7.2 “Cleaning”.
Nozzle soiled or defective. Clean and check the nozzle. If nozzle
is defective, replace it along with the
needle Ä 9.3.1 “Replace needle and
nozzle.”.
Sickle-shaped spray jet Bores in air cap are soiled Clean and check air cap. Replace air
cap if defective Ä 7.2 “Cleaning”.
Nozzle soiled or defective. Clean and check the nozzle. If nozzle
is defective, replace it along with the
needle Ä 9.3.1 “Replace needle and
nozzle.”.
Cap nut or nozzle is not
properly tightened
Tighten cap nut and nozzle Ä 7
“Cleaning”.
Special faults in round jet nozzle set or flat jet nozzle set
Fault description Cause Correction
Spray jet too strong in
center
Too much material Reduce material feed.
Increase spraying air pressure (A).
Faults
02/2020 EcoGun AS AUTO pro HD - MSG00009EN 21/44