Graco PRO AA4500 Instructions-Parts List Manual page 3

Toreducetheriskoffire.expiosion,oreiectrostaticshock,which
may result from electrical discharge,
it
is essential that:
A l l
parts of the electrostatic system are properly grounded.
*
All personnel in or close
to
the spray area are properly
grounded.
Alielectrlllyconductiieobjectsordevicesinthesprayarea,
including paint containers, wash cans and
tools,
are properly
grounded.
When operating the electrostatic device, any ungrounded
objectsinthesprayerea(suchaspeople,containers,tools,etc.)
can
become electrically charged. Arcing may occur if these
cient energy levels can ignite the fluid being sprayed, fumes
objectsthencomeincontactorclosetoground.Arcingofsuffi-
from solvents, dust particles. and otherflammable substances.
ThiscancauseaBre,explosion,orelectrostaticshockandresult
in serious injury and property damage.
through the pump, hose, gun, and nozzle,
but
it is dissipated
Static electricity can also be generated by the flow of fluid
through proper grounding as described in Grounding below.
1.
2.
3.
4.
5.
6.
If you experience any arcing or feel even a slight shock, stop
spreylngimmedlately.Checkforpropergroundingoftheentire
system.Besureyouhavecorrectedtheproblembeforestarting
to
spray again.
Grounding
Thefollowingareminimumrequirementsforgroundinga
basic
electrostaticsystem.Yoursystemmayincludeotherequipment
or objects which must also be grounded. Always check your
localelectricalcodefordetailedgroundinginstructions.Besure
your system is connected to a true earth ground.
Pump: ground by using a ground wire and clamp as
described in your separate pump instruction manual.
Air Compressors and hydraulic power supplies: ground
according
to
the manufacturer's recommendations.
Electrostatic AirSpray Gun: obtaingrounding through con-
Gram .Electrically Conductive Air Supply Hose; see
nectiontoaproperlygroundedairsupplyhose.Useonlythe
ACCESSORIES section to order. Connect the air hose
ground wire
to
a true earth ground.
Allairand fluid lines must be properly grounded. Use only
grounded hoses with a maximum
of
500
feet
(150
m) com-
binedhose1engthtoensuregroundingcontinui~:Referalso
to
Hose
Grounding Contlnulty
on
page
4.
A l l
electric cables must be properly grounded.
Object being sprayed: keep the workpiece hangers clean
and grounded
a1
ail times. Contact points must be sharp
points or knife edges.
7. Alf
electricaltf conductive objects
or
devices in
the spray
area, including paint containers and wash cans, must be
properly grounded.
8. A l l
persons entering the spray area: shoes must have con-
ductivesoles,suchasleather,orpersonaigroundingstraps
The operator must
not
wear gloves that insulate the hand
must be worn. Rubber or piastic soles are not conductive.
fromthespraygun.Theg1ovesmustbeconductiveormodi-
Bed as shown
in
Fig
2.
page
9.
9.
The floor of the spray area must be electrically conductive
andgrounded.DonotMxrerthefloorwithcardboardorany
nontonductive material which would interrupt grounding
continuity.
10.
Flammable liquids in the spray area must be kept in
quantity needed for one shift.
approved,groundedcontainers.Donotstoremorethanthe
11 .Allso/ventpails: use only grounded metal pails, which are
conductive.Donotplacethepailonanynonconductivesur-
face, such as cardboard or paper, which would interrupt
grounding continuity.
T o reduce the risk of fluid injection injury, static sparking or
Flushing and Cleaning Safety
splashing, always follow the Pressure Reilef Procedure on
est possible pressure
to
flush. Trigger the gun into a grounded
page
2
and remove the spray tip before flushing. Use the low-
metal waste container.
Be sure the
ES
ON-OFF lever is OFF before flushlng or
cleanlng any part of the spray system.
To
flush or purge equipment, always use Solvents with a'flash
point equal
to
or greater than that of the fluid being sprayed.
Tocleantheexterioroffheequipment,alwaysusesolventswitha
flash point of higher than 100" F (38"
C).
Always remove ail solvent from the system before reactivating
the spray gun.
Useonlynon-sparkingtoolstocleanresiduefromtheboothand
hangers.
Toprevent
hazardousconcentrationsoftoxicandlorflammable
Ventilate the Spray Booth
vapors, spray only
in
a properly ventilated spray booth.
Check and follow all National, State and Local codes regarding
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.
308-294
3