DÖRR EcoGun AS AUTO, Руководство по эксплуатации, Страница: 18 / 40

Spray pattern Fault identification
Spray jet is uneven.
Spray jet is sickle-shaped.
Fault description Cause Remedy
No material Line pinched or broken
Check the line.
Needle does not open.
Check control air.
Material leaking when
needle is closed. Needle does not close
correctly.
Check control air venting.
Check operation of needle. Replace
needle, if defective, together with the
nozzle Ä 8.3.1 “Replace needle and
nozzle.”.
Nozzle soiled or defec-
tive.
Clean and check the nozzle. If nozzle is
defective, replace it along with the needle
Ä 8.3.1 “Replace needle and nozzle.”.
Air leaks from the
material flow control Piston worn out Replace piston Ä 8.3.3 “Replace piston
and piston seals.”.
Air leak from the
leakage slot Gasket worn out Have it replaced by Dürr Systems.
Material leaks from
the leakage-slot Needle gland worn out
Replace needle gland Ä 8.3.2 “Replace
needle seal”.
Spray jet misaligned Air cap is misaligned.
Rotate air cap into the required position
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.
Faults
06/2018 EcoGun AS AUTO - MSG00019EN 18/40