DÖRR EcoGun 249, Operation Manual

Page: 17 / 40

8.2 Defects table
Visualizer of typical spray pattern problems
Spray pattern Fault identification
Spray jet is distorted.
Spray jet is bent or tapered.
Spray jet is too thick in the middle.
Spray jet is split.
Spray jet is uneven.
Fault description Cause Remedy
No Material Line pinched or
broken
Check the line.
Material escapes at the
needle gland seal. Needle gland seal
worn out. Replacing needle gland seal Ä 8.3.3
“Replacing needle gland seal”.
Needle gland loose.
Tighten needle gland sensitively.
Air escapes at the flat jet
control. Valve seal worn out.
Replacing valve seal Ä 8.3.2
“Replacing valve seal”.
Spray jet is distorted. Air cap is misaligned.
Rotate air cap into the required posi-
tion Ä 6.5 “Alignment of the air cap”.
Spray jet is bent or tapered. Bores in air cap are
soiled.
Clean and check air cap. Replace air
cap if defective
Ä
7.2 “Cleaning”.
Faults
12/2016 EcoGun 249 - MSG00014EN 17/40