Safety Warnings - Graco PRECISIONMIX 231-119 Instructions-Parts List Manual

Proportioning controller
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SERIOUS BODILY INJURY, EXPLOSION, FIRE, OR ELECTRIC SHOCK
CAN OCCUR IF THE PRECAUTIONS BELOW ARE NOT FOLLOWED.
ELECTRICAL EQUIPMENT SHALL ONLY BE INSTALLED, OPERATED, AND SERVICED BY
TRAINED, QUALIFIED PERSONNEL WHO SHALL BE FULLY CONVERSANT WITH THE
REQUIREMENTS STATED WITHIN THIS INSTRUCTION MANUAL.
READ AND UNDERSTAND ALL INSTRUCTION MANUALS AND
WARNING LABELS BEFORE OPERATING THE EQUIPMENT.
FIRE, EXPLOSION, OR ELECTRIC SHOCK HAZARD
General Safety
To reduce the risk of fire, explosion, or electric shock:
1.
DO NOT operate in hazardous locations, as defined in Article 500 of
the National Electrical Code (USA).
2.
Operate the PrecisionMix in well–ventilated areas only.
3.
The equipment MUST be grounded (see below).
4.
Keep liquids away from the electrical components.
5.
Disconnect electrical power at the main switch before servicing the
unit.
6.
DO NOT disassemble the electrical control. Call a qualified electri-
cian.
Grounding
All parts of the fluid system must be properly grounded to reduce the risk
of static electricity discharge. Static electricity is created by the high ve-
locity flow of fluid through the system. When the static electricity is dis-
charged, sparking occurs. Sparks can ignite fumes from solvents and the
fluid being sprayed, dust particles and other flammable substances,
whether you are spraying indoors or outdoors, and can cause a fire or ex-
plosion and serious bodily injury and property damage.
In a low pressure air spray system, static sparking is generally not a prob-
lem. However, some simple precautions should be taken to reduce the
risk. CHECK your local electrical code for detailed grounding instructions
for your area and type of equipment, and BE SURE to ground all of this
spray equipment:
1.
PrecisionMix: the PrecisionMix electronics must be grounded
through an approved grounded power cord, connected to a
grounded electrical socket. To ground the PrecisionMix frame, use
a ground wire and clamp connected to a true earth ground. See
page 33 for an available ground wire and clamp.
Feed pumps or pressure pots: use a ground wire and clamp. See
2.
your separate pump or pressure pot manual.
3.
Air compressor: follow manufacturer's recommendations.
4.
Object being sprayed: according to your local code.
5.
All solvent pails used when flushing, according to your local code.
Use only metal pails, which are conductive, placed on a grounded
surface. Do not place the pail on a nonconductive surface, such as
paper or cardboard, which interrupts the grounding continuity.
EQUIPMENT MISUSE HAZARD
General Safety
Any misuse of the spray equipment or accessories, such as
overpressurizing, modifying parts, using incompatible chemicals and flu-
ids, or using worn or damaged parts, can cause them to rupture and result
in serious bodily injury, such as splashing fluid in the eyes or on the skin,
or fire, explosion or property damage.
NEVER alter or modify any part of this equipment; doing so could cause it
to malfunction.
CHECK all spray equipment regularly and repair or replace worn or dam-
aged parts immediately.
Always wear protective eyewear, gloves, clothing and respirator as rec-
ommended by the fluid and solvent manufacturer.
United States Government safety standards have been adopted under the Occupational Safety and Health Act. These standards – particularly the Gen-
eral Standards, Part 1910, and the Construction Standards, Part 1926 – should be consulted.

SAFETY WARNINGS

IMPORTANT
T o maintain grounding continuity when flushing or relieving pres -
6.
sure , always hold a metal part of the spray gun firmly to the side of a
grounded metal pail, then trigger the gun.
Flushing Safety
Before flushing, be sure the entire system and flushing pails are properly
grounded. Refer to Grounding, at left. Follow the Pressure Relief
Procedure below. Always use the lowest possible fluid pressure, and
maintain firm metal–to–metal contact between the gun and the pail during
flushing to reduce the risk of injury from fluid splashing or static sparking.
Pressure Relief Procedure
To reduce the risk of serious bodily injury, including splashing fluid
in the eyes or on the skin, always follow this procedure whenever
you shut off the PrecisionMix, when checking or servicing any part
of the system, when installing, cleaning, or changing fluid tips, and
whenever you stop spraying.
1. Press the STOP switch on the PrecisionMix control panel at
the beginning of the catalyst (component B) dispense.
2. Relieve fluid and air pressure at the component and solvent
feed pumps or pressure pots, as explained in their separate
instruction manuals.
3. Press the START switch on the PrecisionMix control panel.
4. Hold a metal part of the spray gun firmly to the side of a
grounded metal pail, and trigger the gun to relieve fluid pres-
sure.
5. Set the ON/OFF switch on the control panel to OFF, resetting
the machine control counters.
6. Set the ON/OFF switch to ON. Press the START switch.
7. Hold a metal part of the spray gun firmly to the side of a
grounded metal pail, and trigger the gun to relieve fluid pres-
sure in the component A fluid section.
If you suspect that the fluid tip or hose is completely clogged, or
that pressure has not been fully relieved after following the steps
above, VERY SLOWLY loosen the hose end coupling and relieve
pressure gradually, then loosen completely. Now clear the tip or
hose.
System Pressure
NEVER exceed 100 psi (7 bar) air pressure to the PrecisionMix, and
NEVER exceed 120 psi (8.4 bar) maximum fluid working pressure.
Be sure that all spray equipment and accessories are rated to withstand
the maximum air and fluid working pressures of the system. DO NOT ex-
ceed the maximum working pressure of any component or accessory
used in the system.
Fluid Compatibility
BE SURE that all fluids and solvents used are chemically compatible with
the wetted parts of each of your system's components. Always read the
manufacturer's literature before using fluid or solvent in your system.

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