8.2
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, if defective, together with the
Nozzle seal seat soiled or
defective.
Clean and check the nozzle seal seat.
If nozzle seal seat is defective,
replace it along with the needle.
8.3.3 “Replace nozzle seal seat”
Needle spring worn out
Replace needle spring
Material leaks at the
leakage groove.
Needle seal worn out.
Needle worn out.
Check operation of needle. Replace
needle, if defective, together with the
Air leaks from the end
cap.
Piston sleeve worn out.
Air leak from the
leakage bore.
O-ring of the piston worn
out.
Replace O-ring
Weak spray jet
Material pressure too low.
Increase material pressure.
External filter clogged.
Check external filter. If blocked,
replace.
Nozzle diameter too small. Insert nozzle with a larger diameter.
Spray jet distinctly
smaller than original
(about 25 %).
Nozzle worn out.
Uneven spray jet or bad
spray pattern quality.
Nozzle soiled or defective.
Faults
01/2017
EcoGun AL AUTO - MSG00012EN
16/40