Trouble Shooting And Solution - WAGNER AirCoat GM 4600AC-H Translation Of The Original Operating Manual

EDITION 05/2011
OPERATING MANUAL
7

TROUBLE SHOOTING AND SOLUTION

Malfunction
Insuffi cient material
discharge
Poor spray pattern
Valve rod leaks
(Paint- or air path)
Spray gun will not shut-off
correctly
Part No. DOC394861
Cause
Nozzle too small
Material pressure to low Increase material pressure
Filter of gun or high-
pressure fi lter at pump
clogged
Nozzle is clogged
Valve stem defective
Wrongly adjusted
atomizing air
Nozzle to large
Material pressure to low Increase pressure at pump
Material viscosity to
high
Partial nozzle blockage
Wrongly adjusted
atomizing air
Air cap faulty (blocked
holes, damaged seal)
Wrong air cap type
Paint seal (packing)
damaged or worn, valve
stem damaged
Air valve seals damaged Replace air valve seals
Pretension to low
Worn valveseat / valve
ball
Packing-screw too tight,
or packing stuck with
dried paint
Remedy
Select larger nozzle
Clean or replace fi lter
Nozzle cleaning
Replace valve rod
Readjust the atomizing air
Select smaller nozzle
Thin material in accordance
with the manufacturer's
instructions
Nozzle cleaning
Readjust the atomizing air
Clean or replace air cap
Replace as required air cap
(solvent / water based)
Adjust or replace packing or
replace valve stem complete
Re tighten sealing screw
Replace parts
Replace the seals
GM 4600AC
See chapter
9
6.1
5.4.5
6.4
5.4.1
9.1
5.4.5
5.4.1
5.4.5
5.4.5
6.4
6.4
6.4
6.4
32