Graco PRO AA5500SC Instructions And Parts List page 4

FIRE, EXPLOSION OR ELECTROSTATIC SHOCK HAZARD
To reduce the risk of fire, explosion, or electrostatic shock,
which may result from electrical discharge, it is essential that:
All parts of the electrostatic system are properly
grounded.
All personnel in or close to the spray area are properly
grounded.
All electrically conductive objects or devices in the spray
area, including paint containers, wash cans and tools, are
properly grounded.
When operating the electrostatic device, any ungrounded
objects in the spray area (such as people, containers, tools,
etc.) can become electrically charged. Arcing may occur if
these objects then come in contact or close to ground. Arcing
of sufficient energy levels can ignite the fluid being sprayed,
fumes from solvents, dust particles, and other flammable sub-
stances. This can cause a fire, explosion, or electrostatic
shock and result in serious injury and property damage.
Static electricity can also be generated by the flow of fluid
through the pump, hose, gun, and nozzle, but it is dissipated
through proper grounding as described in Grounding below.
If you experience any arcing or feel even a slight shock, stop
spraying immediately! Check for proper grounding of the
entire system. Be sure you have corrected the problem
before starting to spray again.
Grounding
The following are minimum requirements for grounding a
basic electrostatic system. Your system may include other
equipment or objects which must also be grounded. Always
check your local electrical code for detailed grounding in-
structions. Be sure your system is connected to a true earth
ground.
1. Pump: ground by using a ground wire and clamp as
described in your separate pump instruction manual.
Air compressors and hydraulic power supplies: ground
2.
according to the manufacturer's recommendations.
3. PRO AA5500SC Electrostatic Air Spray Gun: obtain
grounding through connection to a properly grounded air
supply hose. Use only the Graco Electrically Conductive
Air Supply Hose; see Accessories, page 44, to order.
Connect the air hose ground wire to a true earth ground.
Check the electrical grounding of the gun as instructed
on page 12.
4. All air and fluid lines and electric cables must be properly
grounded.
Object being sprayed: keep the work piece hangers
5.
clean and grounded at all times. Contact points must be
sharp points or knife edges.
6. All electrically conductive objects or devices in the spray
area, including paint containers and wash cans, must be
properly grounded.
7. 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 floor of the spray area must be electrically conduc-
8.
tive and grounded. Do not cover the floor with cardboard
or any non-conductive material which would interrupt
grounding continuity.
9. Flammable liquids in the spray area must be kept in
approved, grounded containers. Do not store more than
the quantity needed for one shift.
10. All solvent pails: use only grounded metal pails, which
are conductive. Do not place the pail on any non-con-
ductive surface, such as cardboard or paper, which
would interrupt grounding continuity.
Flushing and Cleaning Safety
To reduce the risk of fluid injection injury, static sparking or
splashing, always follow the Pressure Relief Procedure on
page 3 and remove the spray tip before flushing.
Be sure the turbine air (electrostatics) is OFF before flushing
or cleaning any part of the spray system.
Use the lowest possible pressure to flush. Trigger the gun
into a grounded metal waste container.
To flush or purge equipment, always use solvents with a flash
point equal to or greater than that of the fluid being sprayed.
T o clean the exterior of the equipment, always use solvents
with a flash point of higher than 100 F (38
Always remove all solvent from the system before reactivat-
ing the spray gun.
Use only non-sparking tools to clean residue from the booth
and hangers.
Ventilate the Spray Booth
To prevent hazardous concentrations of toxic and/or flam-
mable vapors, spray only in a properly ventilated spray booth.
Check and follow all National, State and Local codes regard-
ing air exhaust velocity requirements. Check and follow all
local safety and fire codes and OSHA standard 1910.107.
Never operate the spray gun unless the ventilating fans are
operating.
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