Graco Inc. 216-119 - Manual (Page 2)

W A R N I N G
Before cleaning the gun nozzle or attempting to service Be sure your installation complies with all applicable
the gun or other components, always turn off the high local codes.
voltage first, then shut down paint pump and trigger
gun to relieve fluid pressure.
ALWAYS use the lowest pressure possible when
Grounding
flushing and use a grounded metal waste container.
All components of the system, except the gun and paint When flushing, avoid conductive solvents, if possible.
hoses, must be electrically grounded. Be sure the Be sure to turn off H.V. Power Supply before flushing,
power circuit is properly grounded. and to remove all solvent from gun before turning on
Be sure your gun is not grounded.
high voltage.
paint hoses to gun only, and be sure your supply pump
and the object you are painting are-grounded. Operating
Never use or store solvents in the spray area.
All conductive objects within 10 ft (3 of the gun must NEVER IMMERSE THE SPRAY GUN IN SOLVENT OR
be electrically grounded. OTHER LIQUID.
The object being coated must be grounded. Keep work hangers and conveyor equipment clean so
work pieces are well grounded.
How The Automatic
Air Spray Gun Works
A transformer supplies high voltage current through the
cable to the gun’s ionizing electrode, where the
trostatic field is developed. The pump supplies paint
through the hose and gun, where it is electrostatically
charged as it passes the ionizing electrode. The charged
paint is attracted to the grounded work piece, wrapping
around it and coating surfaces indirectly.
Be sure your installation complies with Federal, State
and local codes for the installation of electrical
apparatus in a Class 1, Divisions 1 and 2 Hazardous
Location.
The particular type and size system for your operation
will have to be custom designed for your needs. For a
correctly sized system, contact the
Finishing
System Division, Franklin Park, Illinois.
Mount the gun on an insulated stationary support or
reciprocator arm.
The spray gun has a mounting hole to fit a 0.5 in.
mm) diameter rod. Use a mounting fixture which
allows adjustment of the spray pattern direction and
distance from the work.
Install a normally closed, 3-way air solenoid valve in the
cylinder air supply line. BEFORE CONNECTING AIR
LINES BLOW THEM OUT TO REMOVE METAL CHIPS
AND OTHER FOREIGN PARTICLES. Connect an air
hose from the solenoid valve to the gun’s
cylinder air inlet. Connect an air supply line to the
atomizing air inlet.
BEFORE CONNECTING FLUID LINES, BLOW THEM
OUT WITH AIR AND FLUSH WITH SOLVENT. BE
SURE THAT THE SOLVENT YOU USE IS COMPATI-
BLE WITH THE MATERIAL TO BE SPRAYED.
Connect a fluid hose to the paint supply pump’s outlet
and to the gun’s
npsm fluid inlet.
Install fluid tip in gun. Be sure fluid pressure is relieved
and high voltage turned off before installing tip.
Recommended Hose Sizes (General Purpose)
M A T E R I A L
O-10 ft (O-3 ID
ft 1 ID
ID
100-200 ft ID I
A I R
O-50 ft (O-15 ID
ft ID
ft ID I
Adjust the system’s control device so the gun starts
spraying just before the spray meets the workpiece, and
stops as soon as it is past. regulator installed in paint line. It is best to adjust flow
rate with a fluid regulator.
Spray Pattern Control
The gun requires a minimum of 30 psi (2 bar) air
pressure to the cylinder. Turn air adjusting screw counterclockwise for a
wide flat spray pattern or clockwise to decrease to a
round pattern.
Fluid Control
Adjust the fluid flow to the proper rate, using a fluid
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