Graco Inc. 224-094 Paint Sprayer User Manual


 
308-08415
ELECTRICAL
TROUBLESHOOTING CHART
PROBLEM CAUSE SOLUTION
Improper
distance between gun
Adjust spraying distance to
and workpiece
8 to 12 inches (203 to 305 mm).
Parts poorly grounded
Clean hangers, check for proper
ground on conveyer or track.
High booth exhaust velocity
Reduce exhaust velocity within
code limits.
Atomizing air pressure too high
Reduce atomizing air pressure.
Fluid pressure too high
Reduce fluid pressure.
Improper fluid viscosity
Check supplier for proper fluid for
electrostatic spray
.
Fluid resistivity too low
Check fluid resistivity with paint
meter and probe.
No or low voltage output
Check possible causes listed below
.
T
urbine alternator not operating
Check air supply to gun.
Faulty gun resistance
Check gun resistance. See page 16.
Fluid leaks from fluid rod packing
Clean fluid rod cavity
, replace packing.
and causes short
See page 23.
Faulty turbine alternator
Be sure plug is in place on back of
turbine alternator housing. Remove
and test turbine alternator
. See page 25.
KV HI-LO switch stuck on low
Check switch actuation; replace if
needed.
Operator not properly grounded
Be sure floor is properly grounded.
or is near an ungrounded object
W
ear shoes with conductive soles
or wear personal grounding straps.
Be sure operator is not in contact
with or carrying any metallic items
which could build up electrical charge.
Gun not properly grounded
See
Check the Electrical Grounding
.
W
orkpiece not properly
Clean workpiece hangers. Check for
grounded
proper ground on conveyor or track.
Damaged fiber optic cable or
Check cables and connections.
connection
Replace if damaged.
See other causes under
Problem
“Poor wrap-around”, above.
Poor wrap-around
Operator gets shock
Operator gets shock
when touching workpiece
No or low voltage output
reading on gun display
module