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Troubleshootin
g
Electrical Troubleshooting
Problem
Cause Solution
ES On/Off switch is OFF (O). Turn ON (I).
Gun air pressure too low (ES
indicator is amber).
Check air pressure to gun;
minimum45psi(0.32MPa,3.2
bar) needed at gun for full voltage.
Atomizing air pressure too high. Decrease.
Fluid press
ure too high.
Decrease, o
r replace worn tip.
Incorrect distance from gun to part. Should be 8-12 in. (200-300 mm).
Poorly gro
unded parts.
Resistanc
e must be 1 megohm or
less. Cle
an workpiece hangers.
Faulty gun resistance.
See
Test Gun Resistance, page 32.
Low fluid resistivity. See
Check Fluid Resistivity, page 26.
Fluid l
eaks from the fluid needle
packin
gs and causes a short.
See Flu
id Needle Replacement,
page 44.
Poor wrap.
Faulty alternator.
See Alternator Removal and
Replacement, page 46.
ES On/Off switch is OFF (O). Turn ON (I).ES or Hz indicator is not lit.
No power.
Chec
k power supply, alternator,
and a
lternator ribbon cable. See
Pow
er Supply Removal and
Rep
lacement, page 45 and
Alt
ernator Removal and
Rep
lacement, page 46.
Operator not grounded or is near
ungrounded object.
See Grounding, page 21.Operator gets mild shock.
Gun not grounded. See Check Gun Electrical
Grounding, page 25,and
Test Gun Resistance, page 32.
O
perator gets shock from
workpiece.
Workpiece not grounded. Resistance must be 1 megohm or
less. Clean workpiece hangers.
3A2495C 37