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Installation
309293J 17
Grounding
The following are minimum grounding requirements for
a basic electrostatic waterborne system. Your system
may include other equipment or objects which must be
grounded. Check your local electrical code for detailed
grounding instructions. Your system must be connected
to a true earth ground.
• Electrostatic Air Spray Gun: ground the gun by con-
necting the red-colored Graco Grounded Air Hose
and connecting the air hose ground wire to a true
earth ground. See Check Electrical Grounding,
page 18.
• Graco Waterborne Fluid Hose: the hose is grounded
through the conductive layer. Install the hose as
instructed on page 11.
• All persons entering the spray area: shoes must
have conductive soles, such as leather, or personal
grounding straps must be worn. Do not wear shoes
with non-conductive soles such as rubber or plastic.
If gloves are necessary, wear the conductive gloves
that are supplied with the gun. If non-Graco gloves
are worn, cut off fingers or palm area of glove to
ensure your hand contacts the grounded gun han-
dle.
• Voltage Isolation System: electrically connect to a
true earth ground, as instructed in the voltage isola-
tion system manual.
• Object being sprayed: keep the workpiece hangers
clean and grounded at all times. Resistance must
not exceed 1 megohm.
• The floor of the spray area: must be electrically con-
ductive and grounded. Do not cover the floor with
cardboard or any non-conductive material which
would interrupt grounding continuity.
• All solvent pails: use only grounded metal pails,
which are conductive. Do not use plastic containers.
Do not place the pail on a non-conductive surface
such as paper or cardboard. Do not store more than
the quantity needed for one shift.
• All electrically conductive objects or devices in the
spray area: including fluid containers, tools, and
wash cans, must be properly grounded.
WARNING
Fire, Explosion, and Electric Shock Hazard
When operating the electrostatic gun, any
ungrounded objects in the spray area (peo-
ple, containers, tools, etc.) can become
electrically charged. Improper grounding
can result in static sparking, which can
cause a fire, explosion, or electric shock.
Follow the grounding instructions below.
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