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W 400
20. Correction of Malfunctions
Problem
No coating material
emerges from the
nozzle
Coating material
drips from the
nozzle
Atomisation too
coarse
Spray jet pulsates
Coating material
causes "paint tears"
Too much fog of
coating material
(Overspray)
Width of paint spray
cannot be adjusted
Paint in the
ventilating hose
Cause
•
Nozzle clogged
•
Feed tube clogged
•
Material volume setting turned
too far to the left (-)
•
Feed tube loose
•
No pressure build-up in container
•
Ventilating bore (Fig.9, 1) clogged
•
Nozzle loose
•
Nozzle worn
•
Nozzle seal is missing or worn
•
Coating material assembly at air
cap, nozzle or needle
•
Viscosity of coating material too
high
•
Material volume too large
Material volume adjusting screw
turned too far to the right (+)
•
Nozzle contaminated
•
Air filter heavily soiled
•
Too little pressure build-up in
container
•
Coating material in container
running out
•
Air filter heavily soiled
•
Nozzle seal is missing or worn
•
Too much coating material
applied.
•
Distance to the object too large
•
Too much coating material
applied
•
Adjustment ring is not connected
to the peg on the air cap
•
Air screen is clogged up
•
Diaphragm soiled
•
Diaphragm defective
Remedy
➞ Clean
➞ Clean
➞ Turn to the right (+)
➞ Insert
➞ Tighten container
➞ Clean
➞ Tighten
➞ Change
➞ Insert an intact nozzle
seal
➞ Clean
➞ Thin
➞ Turn material volume
adjusting screw to the
left (-)
➞ Clean
➞ Change
➞ Tighten container
➞ Refill
➞ Change
➞ Insert an intact nozzle
seal
➞ Turn material volume
adjusting screw to the
left (-)
➞ Reduce distance
➞ Turn material volume
adjusting screw to the
left (-)
➞ Connect adjustment
ring and peg
➞ Disassemble and clean
➞ Clean the diaphragm
➞ Replace the diaphragm
GB
27
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