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308-199
EQUIPMENT MISUSE HAZARD
General Safety
Any misuse of the spray/dispensing 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 fluid injection, splashing in the eyes or on the skin, or other serious bod-
ily injury, 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/dispensing equipment regularly and repair or replace
worn or damaged parts immediately.
Always wear protective eyewear, gloves, clothing and respirator as rec-
ommended by the fluid and solvent manufacturer.
System Pressure
NEVER exceed the recommended working pressure or the maximum air
inlet pressure stated on your pump or in the TECHNICAL DATA on the
back cover.
Model 231-171 is limited to 276 bar (4000 psi) Maximum Fluid
Working Pressure at 11.9 bar (173 psi) Maximum Air Input Pressure, be-
cause the hose supplied with that model is rated at 276 bar (4000 psi).
Be sure that all spray/dispensing equipment and accessories are rated to
withstand the maximum working pressure of the pump. DO NOT exceed
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 shown in the TECHNICAL DATA in the separate com-
ponent manuals. Always read the manufacturer’s literature before using
fluid or solvent in this pump.
HOSE SAFETY
High pressure fluid in the hoses can be very dangerous. If the hose devel-
ops a leak, split or rupture due to any kind of wear, damage or misuse, the
high pressure spray emitted from it can cause a fluid injection injury or
other serious bodily injury or property damage.
ALL FLUID HOSES MUST HAVE A BRAIDED STAINLESS STEEL
COVER (OR SPRING GUARDS ON BOTH ENDS)! The braided cover/
spring guards help protect the hose from kinks or bends at or close to the
coupling which can result in hose rupture.
TIGHTEN all fluid connections securely before each use. High pressure
fluid can dislodge a loose coupling or allow high pressure spray to be
emitted from the coupling.
NEVER use a damaged hose. Before each use, check the entire hose for
cuts, leaks, abrasion, bulging cover, or damage or movement of the hose
couplings. If any of these conditions exist, replace the hose immediately.
DO NOT try to recouple high pressure hose or mend it with tape or any
other device. A repaired hose cannot safely contain the high pressure
fluid.
HANDLE AND ROUTE HOSES CAREFULLY. Do not pull on hoses to
move equipment. Do not use fluids which are not compatible with the in-
ner tube and cover of the hose. DO NOT expose Graco hoses to tem-
peratures above 82
C (180
F) or below –40
C (–40
F).
Hose Grounding Continuity
Proper hose grounding continuity is essential to maintaining a grounded
spray/dispensing system. Check the electrical resistance of your air and
fluid hoses at least once a week. If your hose does not have a tag on it
which specifies the maximum electrical resistance, contact the hose sup-
plier or manufacturer for the maximum resistance limits. Use a resistance
meter in the appropriate range for your hose to check the resistance. If
the resistance exceeds the recommended limits, replace it immediately.
An ungrounded or poorly grounded hose can make your system hazard-
ous. Also, read FIRE OR EXPLOSION HAZARD, below.
FIRE OR EXPLOSION HAZARD
Static electricity is created by the high velocity flow of fluid through the
pump and hose. If every part of the spray/dispensing equipment is not
properly grounded, sparking may occur, and the system may become
hazardous. Sparking may also occur when plugging in or unplugging a
power supply cord. Sparks can ignite fumes from solvents and the fluid
being sprayed/dispensed, dust particles and other flammable sub-
stances, whether you are spraying/dispensing indoors or outdoors, and
can cause a fire or explosion and serious bodily injury and property dam-
age. Do not plug in or unplug any power supply cords in the spray/dis-
pensing area when there is any chance of igniting fumes still in the air.
If you experience any static sparking or even a slight shock while using
this equipment, STOP SPRAYING/DISPENSING IMMEDIATELY.
Check the entire system for proper grounding. Do not use the system
again until the problem has been identified and corrected.
Grounding
To reduce the risk of static sparking, ground the pump, object being
sprayed, and all other spray/dispensing equipment used or located in the
spray/dispensing area. CHECK your local electrical code for detailed
grounding instructions for your area and type of equipment. BE SURE to
ground all of this spray/dispensing equipment:
1.
Pump: use a ground wire and clamp. See Fig 1.
2.
Air hoses: use only grounded air hoses.
3.
Fluid hoses: use only grounded fluid hoses.
4.
Air compressor: follow manufacturer’s recommendations.
5.
Spray gun or dispensing valve: grounding is obtained through con-
nection to a properly grounded fluid hose and pump.
6.
Fluid supply container: according to your local code.
7.
Object being sprayed: according to your local code.
8.
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.
9.
To maintain grounding continuity when flushing or relieving pres-
sure, always hold a metal part of the spray gun/dispensing valve
firmly to the side of a grounded
metal pail, then trigger the gun/valve.
To ground the pump:
To ground the pump, loosen the grounding lug locknut (W) and
washer (X). Insert one end of a 1.5 mm
(12 ga) minimum ground
wire (Y) into the slot in lug (Z) and tighten the locknut securely. See
Fig 1. Connect the other end of the wire to a true earth ground. See
the ACCESSORIES section to order a ground wire and clamp.
Fig 1
W
Y
X
Z
0864
Flushing Safety
Before flushing, be sure the entire system and flushing pails are properly
grounded. Refer to Grounding, above. Follow the Pressure Relief
Procedure on page 2, and remove the spray tip/nozzle from the spray
gun/dispensing valve. Always use the lowest possible fluid pressure, and
maintain firm metal–to–metal contact between the gun/valve and the pail
during flushing to reduce the risk of fluid injection injury, static sparking
and splashing.
IMPORTANT
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.
