42
GA 4000ACIC
OPERATING MANUAL
EDITION 06/ 2011
PART NO. DOC2312956
Functional faults
Cause
Remedy
Insuffi cient material
output
Nozzle too small
Select larger nozzle
(see paragraph 8.1)
Material pressure too low
Increase material pressure
Gun fi lter blocked or high pressure
fi lter at pump clogged
Clean or replace fi lter
Nozzle is clogged
Nozzle cleaning (see paragraph 5.4.5)
Valve stem defective
Increase the control air pressure
Replace valve rod
Poor spray pattern
Wrongly adjusted atomizing air
Readjust the atomizing air
(see paragraph 5.4.1)
Nozzle too large
Select smaller nozzle
(see paragraph 8.1)
Material pressure too low
Increase pressure at pump
Material viscosity too high
Thin material in accordance with the
manufacturer‘s instructions
Partial nozzle blockage
Nozzle cleaning (see paragraph 5.4.5)
Wrongly adjusted shaping air
Readjust shaping air
Air cap faulty
(blocked holes, damaged seal)
Clean or replace air cap
Wrong air cap type
Replace as required air cap
(high viscosity/ low viscosity)
Air valve leaks/ Air-
leakage
Air valve seals damaged
Replace air valve seals
(see paragraph 6.3)
Packing leaks
Packings worn
Insert a new packing
Spray gun will not shut-
off correctly / Material
valve leaks
Worn valve seat / valve ball
Replace parts
7
TROUBLE SHOOTING AND SOLUTION