Grounding - Graco Merkur G15W Series Instructions - Parts Manual

Grounding

When operating the electrostatic gun, any
ungrounded objects in the spray area (people, con-
tainers, 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.
The following are minimum grounding requirements for
a basic electrostatic 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.
Pump: Verify that the ground screw (GS) is attached
and tightened securely to the air motor. Connect the
other end of the ground wire (R) to a true earth ground.
AC
F . 3. Ground Screw and Wire
IG
Electrostatic Air-Assisted Spray Gun: Use only the
Graco Electrically Conductive Air Supply Hose (sup-
plied). Connect the Gun Grounding Wire (AC) to the
ground screw (GS) on the air motor.
Heater: refer to the heater manual, supplied.
Air compressor: follow manufacturer's recommenda-
tions.
All air and fluid lines must be properly grounded. Use
only grounded hoses with a maximum of 500 feet
(150m) combined hose length to ensure grounding con-
tinuity.
All electric cables must be properly grounded.
Object being sprayed: keep the workpiece hangers
clean and grounded at all times. Follow local code.
312798J
GS R
ti12914a
All electrically conductive objects or devices in the
spray area, including paint containers, wash cans and
tools, must be properly grounded.
All persons entering
the spray area: shoes
must have conductive
soles, such as leather, or
personal grounding
straps must be worn.
Rubber or plastic soles
are not conductive. The
operator must not wear
gloves that insulate the
hand from the spray gun.
The gloves must be con-
ductive or modified as
shown.
The floor of the spray area must be electrically con-
ductive and grounded. Do not cover the floor with card-
board or any non-conductive material that would
interrupt grounding continuity.
Flammable liquids in the spray area must be kept in
approved, grounded containers. Do not store more than
the quantity needed for one shift.
Fluid supply container: follow local code.
All solvent pails: follow local code. Use only conductive
metal pails, placed on a grounded surface. Do not place
the pail on a non-conductive surface, such as paper or
cardboard, which interrupts grounding continuity.
To maintain grounding continuity when flushing or reliev-
ing pressure, always hold a metal part of the spray gun
firmly to the side of a grounded metal pail, then trigger
the gun.
Installation
Cut out 3 in.
(76 mm) square
Cut off
from palm of
finger of
glove.
glove
17