5
307-711
FIRE OR EXPLOSION HAZARD
Static
electricity is created by the flow of fluid through the
pump
and hose. If every part of the spray equipment is not properly
grounded,
sparking may
occur
, and the system may become haz
-
ardous.
Sparking may also occur when plugging in or
unplugging
a
power supply cord or using a gasoline engine. Sparks can ignite
fumes
from solvents and the fluid being sprayed, dust particles
and other flammable substances, whether you are
spraying
in
-
doors
or outdoors, and can cause a
fire or explosion and serious
bodily
injury and property damage.
If
you experience any static sparking or even a slight shock while
using this equipment,
ST
OP SPRA
YING
IMMEDIA
TELY.
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 sprayer and all
other spray equipment used or located in the spray area.
CHECK
your local electrical code for detailed grounding
instruc
-
tions
for your area and type of equipment. BE SURE to
ground
all
of this spray equipment:
1.
Sprayer:
plug
the power supply cord, or
extension cord, each
equipped
with an undamaged
three-prong plug, into a proper
-
ly grounded outlet. Do not use an adapater. All extensions
cords
must have three wires and be rated for 15 amps.
2.
Fluid
hoses:
use only grounded hoses with a maximum
f 500
ft (150 m) combined hose length to ensure grounding continu
-
ity.
See
Hose Grounding Continuity below.
3.
Spray
gun:
obtain grounding through connection to a properly
grounded
fluid hose and sprayer
.
4.
Object being sprayed:
according to local code.
5.
Fluid supply container:
according to local code.
6.
All
solvent pails used when flushing,
according
to local code.
Use
only metal pails, which are conductive. Do not place the
pail on a non–conductive surface, such as paper or card-
board,
which interrupts the grounding continuity
.
7.
To maintain grounding continuity when flushing or relieving
pressure
,
always hold a metal part of the gun firmly to the side
of
a grounded metal pail, then trigger the gun.
Flushing
Safety
Reduce
the risk of fluid injection injury
, static
sparking, or splash
-
ing
by following the flushing procedure given on page 13 of
this
manual.
Follow the
Pressure Relief Procedure
on
page 2, and
remove
the spray tip
before flushing. Hold a metal part of the gun
firmly
to the side of a grounded metal pail
and use the lowest pos
-
sible
fluid pressure during flushing.
HOSE SAFETY
High pressure fluid in the hoses can be very dangerous. If the
hose develops 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
prop
-
erty
damage.
ALL
FLUID HOSES MUST HA
VE STRAIN
RELIEFS ON BOTH
ENDS!
The strain reliefs 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 pres
-
sure
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 pres
-
sure hose or mend it with tape or any other device. A repaired
hose
cannot contain the high pressure fluid.
HANDLE AND ROUTE HOSES CAREFULLY. Do not pull on
hoses to move equipment. Keep hoses clear of moving parts
and
hot surfaces of the pump and gas engine. Do not use fluids
or solvents which are not compatible with the inner tube and
cover of the hose. DO NOT expose Graco hoses to tempera-
tures
above 180
F (82
C) or below –40
F (–40
C).
Hose Grounding Continuity
Proper hose grounding continuity is essential to maintaining a
grounded
spray system. Check the electrical resistance of your
fluid hoses at least once a week. If your hose does not have a
tag
on it which specifies the maximum electrical resistance, con
-
tact the hose supplier or manufacturer for the maximum resis-
tance
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 hazardous. Also
read
FIRE OR EXPLOSION HAZARD, above.
IMPORTANT
United
States Government
safety standards have been adopted under the Occupational Safety and Health Act. These standards –
particularly
the General Standards, Part 1910, and the Construction Standards, Part 1926 – should be consulted.
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