DÖRR EcoGun AS AUTO Mini RS, Operation Manual

Page: 13 / 28

8 Faults
8.1 Defects table
Fault description Cause Correction
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 cor-
rectly.
Check operation of needle. Replace
needle together with the nozzle if
defective Ä 8.2.1 “Replace needle
and nozzle.”.
Nozzle soiled or defect. Clean and check the nozzle. Replace
nozzle with needle if defective
Ä
8.2.1
“Replace needle and nozzle.”.
Spray jet too strong in
center.
Too much material Reduce material feed.
Increase atomizer air pressure.
Material too viscous. Change material consistency.
Broken spray jet Not enough material. Increase material feed.
Decrease atomizer air pressure.
Material too thin. Change material consistency.
Atomizer air pressure too
high
Decrease atomizer air pressure.
Check external valve of the atomizer.
Sickle-shaped spray jet Nozzle soiled or defect. Clean and check the nozzle. Replace
nozzle with needle if defective Ä 8.2.1
“Replace needle and nozzle.”.
Cap nut or nozzle is not
properly tightened.
Tighten cap nut and nozzle Ä 7.2
“Cleaning”.
Uneven spray jet Nozzle soiled or defect. Clean and check the nozzle. Replace
nozzle with needle if defective Ä 8.2.1
“Replace needle and nozzle.”.
Material pressure too low. Increase material pressure.
Feed line pinched or
broken.
Check the feed line.
Needle does not open
fully.
Check control air.
Faults
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