32
GA 2800EA, GA 2805EA
OPERATING MANUAL
EDITION 12/2008
PART NO. DOC350731
7
TROUBLESHOOTING AND MAINTENANCE
Problem
Cause
Solution
Insuffi cient
material output
• Nozzle too small
• Select larger nozzle (see chapter
9.1)
• Material pressure too low
• Increase material pressure
• Material viscosity too high
• Thin material in accordance with
the manufacturers instructions
• Filter in material supply
clogged
• Clean or replace fi lter
• Nozzle is clogged
• Clean or replace nozzle
• Union screw is screwed in
too far.
• Turn union screw anticlockwise
Poor spray
pattern
• Wrongly adjusted atomizing
air and / or fan air
• Readjust the atomizing air or fan
air
• Nozzle too large
• Select smaller nozzle (see chapter
9.1)
• Material viscosity too high
• Thin material acc. to manufacturers
instruction.
• Material pressure too high
• Reduce material pressure
• Damaged nozzle
• Replace nozzle
• Damaged electrode
• See chapter 8.4 for repairs
Leaking air valve • Damaged seals on the valve
rod
• Exchange seals (see chapter 8.3)
• Sealing screw loose
• Tighten sealing screw
Poor wrap round
or electrostatic
effect
• Poor earthing at object
• Check earthing of object or
hanger with ohmmeter
• Paint resistance too high /
to low
• Check resistance of paint in
accordance with paragraph 4.1.1
• Spraying pressure too high
• Adjust spraying pressure
Back spraying
• Object not earthed
• Check earthing
• Distance between spray gun
and work piece too large
• Reduce distance between spray
gun and work piece