Graco A Series Instructions-Parts List Manual page 5

FIRE OR EXPLOSION HAZARD
All parts of the electrostatic spray system must be properly grounded to
reduce the risk of static electricity discharge. Static electricity is created
by the high velocity flow of fluid through the pump and hose and the spray
gun's power supply. Ungrounded objects can become electrically
charged and sparking may occur. Sparks can ignite vapors from sol-
vents, fluid being sprayed, dust particles and other flammable sub-
stances, which can cause a fire or explosion and result in serious bodily
injury and property damage.
If you experience any sparking 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.
The minimum spraying distance from the gun nozzle to the work piece is
4 in. (100 mm). Holding the gun any closer to the work piece will cause
sparking.
Grounding
The following are minimum requirements for grounding a basic electro-
static system. Your system may include other equipment or objects
which must also be grounded. Always check your local electrical code for
detailed grounding instructions. 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.
2.
Air compressors: ground according to the manufacturer's recom-
mendations.
3.
High voltage power supplies: must be properly grounded and lo-
cated outside the spray area. Ground according to the manufactur-
er's recommendations.
4.
High voltage cable: obtain grounding through connection of an un-
damaged cable to a properly grounded power supply.
5.
All electric cables going to the power supply must be properly
grounded.
6.
Spray gun: obtain grounding through connection to properly
grounded high voltage cable.
7.
Object being sprayed: keep the work piece hangers clean and
grounded at all times. Contact points must be sharp points or knife
edges.
United States Government safety standards have been adopted under the Occupational Safety and Health Act. These standards––particularly the
General Standards, Part 1910.107 and any other appropriate regulations––should be consulted in connection with the installation, operation, and
maintenance of electrostatic spray painting equipment.
8.
All electrically conductive objects or devices in the spray area, in-
cluding paint containers and wash cans, must be properly
grounded.
9.
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 which insulate the hand from the spray gun. See page 9
for how to modify the glove.
10.
The floor of the spray area must be electrically conductive and
grounded. Do not cover the floor with cardboard or any non–con-
ductive material which would interrupt grounding continuity.
11.
Flammable liquids in the spray area must be kept in approved,
grounded containers. Do not store more than the quantity needed
for one shift.
12.
All solvent pails: use only grounded metal pails, which are conduc-
tive. Do not place the pail on any non–conductive surface, such as
cardboard or paper, which would interrupt grounding continuity.
Flushing and Cleaning Safety
To reduce the risk of static sparking or splashing, always follow the Pres-
sure Relief Procedure on page 4 before flushing. Use the lowest possi-
ble pressure and use a grounded metal waste container.
Be sure the high voltage power supply is OFF during flushing.
NEVER use solvents having a flash point of less than 70 F (21 C) to
clean the gun. NEVER use solvents having a flash point of less than 100
F (38 C) to clean the spray system. ALWAYS remove all solvent from the
system before reactivating the spray gun.
Use only non–sparking tools to clean residue from the booth and hang-
ers.
Ventilate the Spray Booth
To prevent hazardous concentrations of toxic and/or flammable vapors,
spray only in a properly ventilated spray booth.
The High Voltage Power Supply must be electrically interlocked with the
ventilators to prevent operation of the Power Supply unless ventilating
fans are operating.
NEVER operate the spray gun unless the ventilating fans are operating.
IMPORTANT