6. TROUBLE SHOOTING AND SOLUTIONS
GM 2000 EAC - EN
6.1
Problem
Insufficient material
output
Poor spray pattern
Leaking air valve
Poor wrap round or
electrostatic effect
Back spraying
No electrostatic ef-
fect
(no wrap around)
Cause
• Tip too small
• Material pressure too low
• Gun filter or high-pressure
filter in pump blocked
• AirCoat tip (round) clogged
• Wrongly adjusted atomizing
air
• Tip too large
• Material pressure too low
• Material viscosity too high
• Damaged seals on the valve
rod
• Poor earth
• Paint conductivity too high /
resistance paint too high
• Spraying pressure too high
• No earth
• Distance between spray gun
and workpiece too large.
• High voltage switched off ?
• High voltage failure
Solution
• Select larger tip (see chapter
7.1 and 7.2)
• Increase material pressure
• Clean or exchange filter
• Clean tip (see chapter 4.4,
4.8 and 4.9)
• Readjust the atomizing air
• Select smaller tip (see chap-
ter 7.1 and 7.2)
• Increase material pressure
• Thin material acc. to manu-
facturer's instruction.
• Exchange seals (see chapter
5.4 and 5.5)
• Check earth of object
• Check resistance of paint
(see chapter 2.4)
• Adjust spraying pressure
• Check earth. (see chapter
3.2)
• Reduce distance between
spray gun and workpiece.
• Switch on high voltage.
• Repair failure acc. to opera-
ting instructions of control
unit.