Graco EM 390 Operation manual

STRUCTIONS - PARTS LIST 3O7-n4
This manual contains IMPORTANT
READ AND RETAIN
FOR REFERENCE
WARNINGS and INSTRUCTIONS
ORACO
Rev. D
SUPERSEDES C
WARNING *
Aluminum and Zinc Material Hazard
Never use
1,1,1-trichloroethane,methylene chloride, other halogenatedhydrocarbonsolvents or fluids containing
such solvents inthis equipment. Such usecould result inaserious chemical reaction, withthe possibility
of explo -
sion, which could cause death, serious bodily injury and/or substantialproperty damage.
Consult your fluid suppliers to ensure that the fluids being used are compatible with aluminum and zinc parts.
GRACO INC. P.O. BOX 1441 MINNEAPOLIS. MN 55440 - 1444
@ COPYRIGHT 1985 GRACO INC.

HIGH PRESSURE SPRAY CAN CAUSE SERIOUS INJURY.
FOR PROFESSIONAL USE ONLY. OBSERVE ALL WARNINGS.
Read and understand all instruction manuals before operating equipment.
FLUID INJECTION HAZARD
General Safety
Thisequipment generatesvery highfluidpressure. Sprayfrom
the gun, leaks or ruptured components can inject fluid
through your skin and into your body and cause extremely
serious bodily injury, including the needfor amputation. Also,
fluid injected or splashed into the eyes or on the skin can
cause serious damage.
NEVER point the spray gun at anyone or at any part of the
try to
" blow back " paint: this is NOT an air spray system.
body. NEVER put hand or fingers over the spray tip. NEVER
ALWAYS have the tip guard in place on the spray gun when
spraying.
.. .
before cleaning or removing the spray tip or servicing any
ALWAYS follow the Pressure Relief Procedure, below,
system equipment.
NEVER try to stop or deflect leaks with your hand or body.
Be sure equipment safety devices are operating properly
before each use.
If any fluid appean to penetrate your skin, get EMERGENCY
Medlcal Alert - Airless Spray Wounds
SIMPLE CUT. Tell the doctor exactly what fluid was injected.
MEDICAL CARE AT ONCE. DO NOT TREAT AS
A
Spray Gun Safety Devices
Be sure all gun safety devices are operating properly before
can cause a malfunction and result in serious bodily injury.
each use. Do not remove or modify any part of the gun; this
Safety Latch
the gun safety latch in the closed or " safe " position, making
Whenever you stop spraying, even for a moment, always set
the gun inoperative. Failureto set the safetylatch can resultin
accidentaltriggering of the gun.
DHuser
The gun diffuser breaks upspray and reducesthe risk of fluid
injection when the
tip isnotinstalled. Checkdiffuser operation
regularly. Follow the Pressure Relief Procedure, below,
then remove the spray
tip. Aim the gun into a metal pail,
holding the gun firmly to the pail. Using the lowest possible
to an irregular stream, replace the diffuser immediately.
pressure, trigger the gun. Ifthefluid emitted
is not diffused in-
Tip Guard
ALWAYS have the tip guard in place on the spray gun while
spraying. The
tip guard alerts you to the fluid injection hazard
and helpsreduce,
but doesnot prevent, the risk of accidental-
spray tip.
ly Placing your fingers or any part of your body close to the
Spray
Tip Safetv
Note to Physician: lnjectiofl in the skin is a tr.9UfnetiC in- the spraytip clogswhile spraying, engage the gun safety latch
Useextreme caution when cleaning or changingspray tips. If
iuV. It IS ImportanttotreatthelnjuWsIJr€llcellv 08 soon immediately. ALWAYS follow the Pressure Relief Pro-
as posslble. Do not delay treatment to reseerch toxicity.
Toxicity is e concern with some exotic coatings injected
cedure and then removethe spray tip to clean it.
surgeon or reconstructivehand surgeon mey be advisable. fully relieved and the gun safety latch is engaged.
direct&' into the blood Stream. COflSUltetiOnwirh 8 Pl8SfiC NEVER wipe off build-uparoundthe spraytip until pressureis
Pressure Relief Procedure
TO reducethe risk of seriousbodilyinjury, including fluid injection, splashing fluid orsolvent in the eyes or onthe skin, or injury
from moving Partsor electricshock, alwapfollow this procedurewhenever you shut off the sprayer, when checkingorse~yic-
ing any Part Of the spray Wtem, when installing, cleaningor changingspray tips, and whenever you stop spraying. (I J Engage
the un Safety latch. (2) Turnthe ON/OFF switchto OFF. (3) Unplugthe powersupply cord. (4) Disengagethe gunSafeW latch.
gun MfeW latch. 17)
Open the drain valve/pressure relief ValVe. having a container ready to catch the drainage. (8) Leave the
6) &Id metalPart
of thegun firmlytothesideof agrounded metalpail, andtriggerthe guntorelievepressure. (6) Engage the
drain valve/pressure relief valve open
until you ere ready to spray again,
If you suspect that thesprey tip or hose is completetY clogged, or thatpressure has not been fu/& relieved after fo//owjngthe
stepsabove, VERY SLOWLY loosenthe tip guardretainingnut or hoseendcoupling and relievepressuregradually,jhen loosen
completely. Now clear the tip or hose.
ENG A GE SAFETY TURN SWITCH AND TRIGGER GUN: OPEN DRAIN VALVE OR
DISENGAGESAFETY
UNPLUG
COR0
TO OFF ENGAGE SAFETY AGAIN PRESSURE RELIEF VALVE

EQUIPMENT MISUSE HAZARD
General Safety
Any misuse of the spray equipment or accessories, such as
chemicals and fluids, or using worn or damaged parts, can
overpressurizing, modifying parts, using incompatible
-use themtoruptureend result in fluidinjection, splashing in
the eyes or on the skin, or other serious bodily injury, fire, ex -
plosion 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 damaged parts immediately.
regardingthe use of protective clothing and equipment.
Readandfollow the fluid and solvent manufacturer'sliterature
System Pressure
This sprayer can develop
25w psi (172 bar1 MAXIMUM
WORKING
PRESSURE. Besure that allspray equipment and
accessories are rated to withstand the maximum working
pressureof this sprayer. DO NOTexceed the maximumwork
-
ing pressure of any component or accessory used in the
system.
Fluid Compatibility
BE SURE that
all fluids and solventsusedare chemically com -
patible with the wetted parts shown in the Technical Data on
the back cover. Always read the
fluid and solvent manufac -
turer's literature before using them in this sprayer.
.. .
HOSE SAFETY
hosedevelopsa leak, split
or rupturedue to any kind of waar,
High pressurefluid
in
the hoses can be very dangerous. If the
damageor misuse. the
high pressureaprayemittedfrom it can
cause a fluid injection injury or other serious bodily injury or
property damage.
spring guards help protect the hose from kinks or bends
at or
ALL FLUID HOSES MUSTHAVESPRING GUARDS! The
close to the coupling which can result
in hose rupture.
TIGHTEN
all fluid connectionssecurely beforeeach use. High
pressure fluid can dislodge a loose coupling or allow high
pressurespray to be emitted from the coupling.
NEVER use a damaged hose. Beforeeach use, check the en
-
tire hosefor cuts, leaks, abrasion, bulging cover, ordamageor
exist, replace the hose immediately.
DO NOT try to recouple
movement of the hose couplings. If any of these conditions
high pressurehoseor menditwith tape or any other device. A
repaired hose cannot contain the high pressure fluid.
HANDLE AND ROUTE HOSES CAREFULLY. Do not pull on
hosestomove equipment. Do not use fluids or solvents which
are not compatiblewith the inner tube
and cover of the hose.
DO NOT expose Graco hose to temperatures above
lSO°F
(82°C) or below 40-F i-4O"C).
Hose Grounding Continuity
groundedspraysystem.Checktheelectricalresistanceof your
Proper hose grounding continuity is essentialto maintaining a
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 supplier or manufacturer for the
maximum resistance limits. Use a resistance meter
in the ap-
resistance exceeds the recommended limits, replace it im-
propriate range for your hose to check the resistance. If the
your system hazardous. Also read FIRE
OR EXPLOSION
mediately. An ungroundedor poorly grounded hose can make
HAZARD.
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 equip
-
ment 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,
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.
Always plug the sprayer into an outlet at least
20 feet 16 m)
away from the sprayer and the spray area. Do not plug in or
unplugany power supplycords inthesprayarea when there is
any chance of igniting fumes still
in the air.
while using this equipment. STOP SPRAYING IMMEDI-
If you experience any static sparking or even a slight shock
ATELY. Check the entire system for positive grounding. Do
not usethe systemagain untilthe problem has been identified
and corrected.
Grounding
To reducethe risk of static sparking, ground the sprayer and
all other spray equipment used or located in the spray area.
structions for your area and type of equipment. BE SURE to
CHECK your local electrical code for detailed grounding in-
ground all of this spray equipment:
1. Sprayer: plug the power supply cord, or extension cord,
each equippedwith an undamagedthree
- prong plug, into
a properlygroundedoutlet. Do not use an adapter.All ex -
tension cords must have three wires and be rated for 15
amps.
2. Fluid hoses: use only groundedhoseswith a maximumof
500 feet 1150 m)combinedhoselengthto ensurewound -
ing continuity. Refer to Hose Grounding Cont uity.
3. Spray gun: obtain grounding through connecw 3 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. Useonly metalpails, which are conductive. Donot
placethe pail ona non
- conductivesurface, such as paper
or cardboard, which interrupts the grounding continuity.
7. TO mainteingrounding continuitywhed flushing orreliev-
ingpressure, alwaysholda metal partof the gun firmly to
the side of a grounded metalpail, then trigger the gun.
Flushing Safety
splashing by following the flushing procedure given on page
Reduce the risk of a fluid injection injury, static sparking, or
page
2. andremove thespray tip beforeflushing. Holda metal
12 of this manual. Follow the Pressure Rellef Procedure on
part of the gun firmly tothe sideof agroundedmetalpailand
use the lowest possible
fluid pressure during flushing.
MOVlN6 PARTS HAZARD
body parts. KEEP CLEAR of moving parts when starting or
Moving parts can pinch or amputate your fingers or other
operating the sprayer. Unplug the sprayer, and follow the
Pressure Relief Procedure on page
2, to prevent it from
starting accidentally.
IMPORTANT
UnitedStatesGovernmentsafetystandards havebeenadoptedunder theOccupationalSafetyand HealthAct. Thesestandards-par-
ticularly the General Standards, Part 1910. and the Construction Standards, Part 1926"should be consulted.
307-724 3
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La pulv6risation B haute pression peut causer des blessures trhs graves.
Rbservb exclusivement B I'usage professionnel. Observer toutes les consignes de s6curit6.
Bien lire et bien comprendre tous les manuels d'instructions avant d'utiliser le matbriel.
RISQUES D'INJECTION
Consignes g6n6rale.s de skurite
Cet appareilproduit un fluide B trh haute pression. Le fiuide
pulverisbpar le pistolet ou le fluide souspressionprovenantde
fuites ou de ruptures peut pbnbtrer sous lapeauou
B I'intbrieur
du corpset entrainerdes blessurestrhs graves, voir memeune
amputation. Mhesans&re sous pression, lefluide Bclabous-
sant ou entrant dans les yeux peut aussi entrainer des
blessures graves.
tie quelconque du corps. NE JAMAIS mettre
la main ou Ies
NEJAMAIS pointer le pistolet vers quelqu'un ouvers une par-
doigts sur I'ajutage du pulvbrisateur. NE JAMAIS essayer de
" refouler " la peinture. Cet appareil N'est PASuncompresseur
pneumatique.
TOUJOURS garder la protection de I'ajutage en place sur le
pistolet pendant la pulvbrisation.
TOUJOURS observer la March
B Suivre pour DBtendre la
Pression donnbe plus loin, avant de nettoyer ou d'enlever
que sur une partie de I'appareil.
I'ajutage du pulvbrisateur, ou d'effectuer un travail quelcon-
NE JAMAIS essayer d'arriter ou de dbvier Ies fuites avec la
main ou le corps.
Avant chaque utilisation, bien s'assurer que les dispositifs de
Soins medicaux
sbcuritb fonctionnent correctement.
En cas de penetration de fluide sous
la peau:
DEMANDER IMMEDIATEMENT DES SDlNS
MEDICAUX D'URGENCE.
NE PASSOIGNER CETTE BLESSURE COMME
UNE SIMPLE COUPURE.
Direexactementau mbdecinque1type de liquide
a 6th injectb.
proprib, dire au medecin d'appeler le
Pour avoir des instructions concernant le traltement ap-
CENTRE ANTI - POISON SUIVANT:
-.
NATIONALPOISON CENTER NETWORK
(412)681 - 6669
Avant chaque utilisation, biens'assure quetous les dispositifs
Dispositifs de s6curit6 du pistolet
de securitb du pistolet fonctionnent correctement. Ne pas
enlever nimodifier une partie quelconquedu pistolet; ceci ris-
querait d'entrainer un mauvais fonctionnement et des
blessuresgraves.
Verrou de st?curitr?
d'un court instant, touiours mettre le verrou de securitb du
A chaque fois que l'on s'arr8te de pulvbriser, meme s'il s'agit
pistolet sur
la position "fermbe" ou "sbcurit6" ( " safe " ) pour
empicher le pistolet de fonctionner. Si le verrou de sbcuritb
Diffuser
n'est pas mis, le pistolet peut se declencher accidentellement.
Le diffuseur du pistolet sert a diviser lejet et a rbduireles ris-
ques d'injection accidentelie quand~rajutagen'est pas en
place. Vbrifier le fonctionnement du diffuseur rbgulihrement.
.Pour cette vbrification, dbtendre la pression en observant la
Marche B Suivre pour DBtendre la Pression donnee plus
loin puis enlever I'ajutags du pulvbrisateur. Pointer le pistolet
dans un seau en mbtal, en le maintenantfermernent contre le
seau. Puis, en utilisant
la pression la plus faible possible, ap-
puyersur la gachette du pistolet. Si le fluide projeten'estpas
diffuse sous forme de jet irrbgulier, remplacer immbdiatement
ie diffuseur.
TOUJOURSmaintenir la protection de I'ajutage en placesur le
Protection de I'ajutage
pistolet du pulvbrisateur pendant la pulvbrisation. La protec -
tion de I'ajutage attire I'attention sur les risquesd'injection et
corps ne passe accidentellement B proximitb immediate de
contribue
B bviter que les doigts ou une partiequelconquedu
I'ajutage du pulvbrisateur.
Consiqnes de s6curit6 concernant I'ajutage du
pulv6rlsateur
rempiacement des ajutages du pulvbrisateur. Si I'ajutage se
Faire extrimement attention B lloccasiondu nenoyage ou du
bouche pendant la pulvbrisation, mettre immbdiatement le
verrou de sbcuritb du pistolet. TOUJOURS bien observer
18
I'ajutage du pulvbrisateur pour le nettoyer.
Marche
B Suivre pour DBtendre la Pression puis enlever
du pulvbrisateur avant que la pression ne soit complbtement
NE JAMAIS essuyer ce quis'est accumulbautour de I'ajutage
tornb6e et queieverrou de sbcuritb dupistolet ne soit engagb.
Pour rbduire les risquesde blessuresgraves,
y compris lesblessures par injection de fluide ou celles causbes par des pieces en
Marche a Suivre pour DBtendre la Pression
rnouvement ou par blectrocution, toujours bien observer cette marche B suivre B chaquefois que l'on arrete le pulvbrisateur, B
I'occasion de la verification ou de la reparationd'une piece de I'appareil de pulvbrisation, B l'occasion de I'installation, du net-
2) MettreI'interrupteur Marche - Arret sur ARRET ( " OFF " ). 3) Dbbrancher le cordon d'alimentation. 41 Dbsengagerle verroude
toyage ou du rernplacement des ajutageset d'une rnanibregbnbrele B chaquearret. 1) Engager le verroude sbcuritb du pistolet.
dcuritbdu pistolet. 5) En maintenant une partie mbtalliquedu pistolet fermement appuybe contre le cat6 d'un seau en metat,
appuyer sur la gachette du pistolet pour libbrer la pression. 6) Engager le verrou de sbcuritb du pistolet. 7) Ouvrir le robinet de
purge en prenant soin d'avoir un recipient prht
B rbcupbrer le liquide. 8) Laisser le robinet de purge ouvert jusqu'a ce que le
pulverisateur soit de nouveau pret B &re utilisb.
Si I'on soupconne queI'ajutage du pulv4risateur ou letuvau estcompldtementbouche, ou que lapressionn'a pasdt.4complbte-
mentIibtWeaprbs avoirproc&ddaux operationsci - dessus, desserrer TRES LENTEMENTI'bcrou de retenuede la protectionde
I'ajutage ou le raccorddu bout du tuyau et libbrerprogressivement
la pression, puis terminer le desserrage. On peut maihtenant
307 - 724
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RISQUES EN CAS DE MAUVAISE UTILISATION DU MATERIEL
Consignes generales de securite
Touteutilisation anormalede I'appareil de pulvbrisationou des
Pression
accessoires comme, par exemple, la mise sous une pression Ce puivbrisateurpeut produireun
PRESSION MAXIMUM DE
TRAVAIL 172 bar 125w Ib/po. $ 1. S'assurer que tous les
excessive, les modifications de pieces, I'utilisation de produits
chirniques et de rnatieres incompatibles et I'utilisation de elementsdu pulverisateuret ses accessoires sont concuspour
resister
B la pression maximum de travail de ce pulvBrisateur.
pieces useesouabimees peut causer des degsts B I'appareil ou
des ruptures de pieces et entrainer une injection de liquideou Blements ou accessoires utilishsavec cet appareil.
NE PAS depasser
la pression maximumde travail d'aucun des
d'autres dbgats.
d'autres blessures sbrieuses, un incendie, une explosion ou compatibilite des corps
NE JAMAIS alterer ou modifier une piecede cet appareil; ceci BlEN S'ASSURER que tous les corps des solvants utilisbs
sont chimiquement compatiblesavec les parties mouillees in-
risouerait d'entrainer son mauvais fonctionnement. diquees dans les "Donnbes techniques " , au dos de la couver-
,
~~ ~
VERIFIER rbguli8rement tout I'appareil de pulvbrisationet ses du fabricant des matieres et SOivantS utilises avant de S.en ser-
ture. Toujours liresoigneusement Ies documentset brochures
Bquipements et reparer
ou remplacer immbdiatement ies vir dans ce pulverisateur,
pieces usbes ou abim6es.
MESURES DE SECURITE CONCERNANT LES
tres dangereux. En casde fuite sur letuyeu, m&meminuscule,
Le fluide
B haute pression circulant dans les tuyaux peut &re
ou d'une mauvaise utilisation, les projections de fluide haute
de fissure, dechirureou rupture
B la suitede I'usure, de dbgsts
pression qui en proviennent peuvent entrainer des blessures
graves par penetration
sous la peau ou par contact,..ainsi que
des dbgsts materiels.
TOUS LES TUYAUX FLEXIBLES DOIVENT AVOlR DES
RESSORTS SPIRALE
DE PROTECTION1 Les spirales de
protection contribuent
B Bviter la formation de pliures, de
boucles
ou de nceuds sur lestuyaux qui pourraiententrainer la
rupture du tuyau
B I'endroit du raccord ou B son voisinag.4.
SERRER FERMEMENTtomles raccordsavant chaque utilisa-
tion. Le fluide sous pression peut faire sauter un raccord
desserreou produire un jet B hautepressions'khappant par le
raccord.
utilisation, verifier entieremantchaque tuyau pour dbceler le?.
NE JAMAIS utiliser un tuyau endommag& Avant chaque
toute autre deterioration ou jeu des raccords. Si l'on constate
coupures, fuites, abrasions, boursouflures de I'enveloppe ou
mediatement.NE PASessayer de refaireleraccordd'un tuyau
rune de ces deteriorations, il faut remplacer le tuyau im-
haute pression ni de reparerle tuyau avec du rubanadhesif ou
TUYAUX FLEXIBLES
fluide sous oression.
par tout autre moyen. Untuyau reparene peut pas resisterau
MANIPULER LES TUYAUX AVEC PRECAUTION . ET
CHOlSlR SOIGNEUSEMENT LEUR CHEMIN. Nepasdbplacer
le materielen tirant sur le tuyau. Ne pas utiliserde matibresou
tbrieure ou extbrieure du tuyau. NE PAS exposer le tuyau B
de solvants qui ne sont pas compatiblesavec I'enveloppe in-
- 40°C (-40°F).
des temperatures superieures B 82OC (180°F) ou inferieures B
Continuit6 de la mise B la terre des tu aux
Une bonne continuite de la mise
B la terre As tuyaux est
essentielle pour maintenir
la mise B la terre de I'ensemble de
vaporisation. Verifiez
la resistanceBlectrique de vos tuyaux B
fluides et B air, au moins une fois per semaine. Si votre tuyau
ne comporte pas d'kiquette qui precise
la resistance 6lectri-
que, prenez contact avec le fournisseur de tuyaux ou la fabri-
cant pour avoir les limites de resistance. Utilisez un metre de
resistancede
la gammeappropriee pour votre tuyau et verifiez
la resistance. Si celle - ci depasse les iimites recommandbes,
terre ou avec une mise B la terre incorrecte peut entrainer des
remplacez
le tuyau immbdiatement. Un tuyau sans mise B la
CENDIE OU D'EXPLOSION ci - dessus.
risquespour votre systhme. Lisez aussi LES RISQUES D'IN-
RISQUES D'INCENDIE OU D'EXPLOSION
~ ~ - ~
grande vitesse dans la pompeet dans les tuyaux. Sitoutes les
De I'electricitestatiqueestproduite par le passagedu fluide
B
pieces de I'appareil de pulvbrisation ne sont pas convenable-
ment relibes B la masseou B la terre, des C-inceilespeuvent se
produire et I'appareil risque d'&tre dangereux. Des Btincelles
peuvent Bgalement se produire
B l'occasion du branchernent
ou du dhbranchement du cordon d'alimentation. LesBtincelles
sont suffisantes pour allumer les vapeurs de solvants et le
fluide pulv6ris4, les fines particules de poussihre ainsi que
d'autres substances inflammables, quand on pulverise
B I'in-
tbrieur ou B I'ertBrieur, et elles peuventcauser un incendie ou
une explosion, ainsi que des blessures graves et des degBts
trouvant B au moins
6 m (20
piedsl de I'appareilet de I'endroit
materiels.Toujoursbrancherle pulverisateur dans une prisese
od se fait la pulverisation. Ne pas brancher ou debrancher un
cordon d'alimentation quei qu'ii soit dans
la zone OD se fait la
pulvbrisationquand
il y a le moindre risque que des vapeurs
encore presentes dans I'air prennent feu.
S'il se produit des Btincelles d'blectricitb statique, ou si vous
ressentez la moindre dbcharge, ARRETE2 IMMEDIATEMENT
LA PULVERISATION. VBrifiez que le systeme entier est bien
rnis
B la terre. Ne vous servez pasdu srjtemeavant que le pro-
blbme soit identifie et corrige.
Mise A la terre ou A la masse
statique, le pulverisateuret tous lesBquipementsutilisbs ou se
Pour reduireles risques de productiond'kincelles d'8lectricit6
trouvant dans IS zone de pulvbrisationdoivent &re relies B la
mise B la terre dans la region et le type particulier d'bquipe-
terre ou B la masse. Pour connaitreledetaildes instructions de
locales. S'ASSURER que tous Ies Bquipements de pulv6risa-
ment, CONSULTER lecode ou les rbglernentations Blectriques
tion suivants sont bien relies B ia terre:
1. Pulvt!risateur: Brancher le cordon d'alimentation ou la
rallongequi doivent &re BquipBs d'une prise
B 3 fiches en bon
&at, dans une prise de courant convenablement mise B la
terre. Nepasutiliserd'adaptateur. Toutesles rallongesdoivent
avoir
3 fils et &re prevues pour 15 amphres.
2. Tuyaux flexibles: Afin d'assurer la continuit6 de la mise B la
terre, n'utiliser que des tuyaux comportant une mise
B la terre
et avant une longueur maximum combinde de
150 m
tinuit6 du circuit de mise B la terre des tuyaux " .
(1500 piedsl. Se reporter Bgalement au paragraphe " Con -
3. Pistolet: Rbaliser la mise a la terre en le raccordant B un
B la terre.
tuyau flexible et
B un pulvbrisateur deja convenablement relies
4. Objets, materiel ou surfaces recevant la pulverisation:
observer le code ou les rbglementations locales.
5. Tousles seaux desdvants utilisbs pourle rincage: observer
m4talliquesconducteurs de I'Blectricite. Ne pas mettle le seau
lecodeou lesreglementationslocales.Nutilserquedesseaux
sur une surface non conductrice comme sur du papier ou du
carton car cela interromprait la continuitb le
la mise B la terre.
6. Pour conserver la continuitt! de la mise r) la terre quandon
rince le mat6riel ou quand on Iibhre la pression, toujours
contre le cBt6 d'un seau en metalpuis appuyer sur la detente
maintenir une partiemetalliquedu pistolet ferrnement appuyee
du pistolet.
Mesures de SBcurite concernant le Rincage
peau et le$ risques dOs aux Btincellesd'dlectricitb stetique ou
Pour reduire les risques de blessures par penetration de la
aux Bclaboussures, observer
la marche B Suivre pourle rincage
donnee B la page 12 de ce manuel. Observer la " Marche B
enlever I'ajutage du pulvt!risateur avant le rincage. Maintenir
Suivre pour DBtendre
la Pression " donnee B la page 4 en
une parfie m6talliquedu pistolet fermement appuyeecontre le
cdte d'un seau en metalet utiliser la pression la plus faible
possible pendant le rincage.
307 - 724 5

EL ROCIADO A ALTA PRESION PUEDE CAUSAR GRAVES LESIOMES.
SOLO PARA US0 PROFESIONAL. RESPETE LOS AVISOS DE ADVERTENCIA.
Lea y entienda todo el manual de instrucciones antes de manejar el equipo.
PELIGRO DE INYECCION DE FLUID0
Seguridad general
Este equipo genera un fluido a una presi6n muy alta. El
rociado de la pistola,
10s escapes de fluido o roturas de 10s
componentes pueden inyectar fluido en la piel y el cuerpo y
causar lesionesextremadamentegraves, incluyendo a veces la
necesidad de amputaci6n. Tarnbibn, el fluido inyectado o
salpicado en 10s ojos puede causar graves daiios.
cuerpo. NUNCA colocar la mano
o 10s dedos encirna de la bo -
NUNCA apuntar la pistola hacia alguien o alguna parte del
quilla. NUNCA tratar de
" hacer retornar la pintura " ; este NO
es un sistema de rociado de aire.
pistola mientras
se est6 pulverizando.
SIEMPRE tener colocado el protector de
la boquilla en la
SIEMPRE seguir
el procedimientodedescargade presibn,
servicio a cualiquier equipo del sistema.
dado
mes abjo, antes de lirnpiar o sacar la boquilla o de dar
NUNCA tratar de parar
o desviar 10s escapes con la mano o el
Asegurar que todos
10s aparatos de seguridad del equipo
cuerpg.
estBn funcionando bien antes de cada uso.
Tratamiento
medico
Si parecieraque un poco de fluido penetr6 la piel, conseguir
TRATAMIENTO MEDICO DE URGENCIA DE
INMEDIATO.
NO TRATAR LA HERIDA COMO UNSIMPLE CORTE.
~ ~~
Decir al medico exactamente cua fluido fue. Para instruc-
ciones de tratarniento, pedir al medico que llame a la
CADENA DEL CENTRO NACIONAL DE
ENVENENAMIENTO
(412)681 - 6669
Aparatos de seguridad de la pistola pulverizadora
Asegurar que todos
10s aparatos protectores de la pistola
est6n funcionando bien antes de cada uso. No sacar ni
modificar ninguna pieza de la pistola pues podria causar el
malfuncionamientode la misrna con Ias consiguientes lesiones
pemnales.
Pestillo de seguridad
rnomento, siempre colocar el pestillo de seguridad en la
Cada vez que se deje de pulverizar, aunque sea por un breve
posici6n " cerrada " , lo que deja la pistola inoperante. El no
hacerlo puede llevar al disparo imprevistode
la pistola.
Difusor
El dausor de la pistola dispersa el chorro pulverizado y reduce
el riesgo de inyecci6n cuando no est6 instalada la boquilla.
el procedimiento dedescerga de presibn, dado
m6s abajo,
Revisar con regularidadel funcionamiento del difusor. Seguir
y despubs sacar la boquilla. Apuntar la pistola a un balde
met6lico. sostenibndola bien firme contra 61. Utilizando ia
presi6n mas bajo posible, disparar la pistola. Si el fluido
emitido
no sale disperso en un chorro irregular, reemplazar de
inmediato
el difusor.
Protector de la boquilla
SIEMPRE tener el protector de la boquilla colocado en la
pistola rnientrasse est6 pulverizando. Este protector llama
la
atenci6n contra el peligro de inyeccibn y ayuda a prevenir la
cuerpo cerca de la boquilla.
colocaci6n accidental de 10s dedos o cualquier otra parte del
Seguridad de la boquilla pulverizadora
Tener mucho cuidado al limpiar
o cambiar las boquillas. Si
llegara a obstruirse mientras est6 pulverizando, enganchar el
pestillo de
la pistola de inmediato. SIEMPRE seguir el pro-
quilla para limpiarla.
cedimiento de descarga de presibn
y despubs sacar la bo -
NUNCA limpiar la acumulaci6nde pintura alrededor de la bo -
quilla antes de que se haya descargado por cornpleto la
presi6n y el pestillo est6 enganchado.
Procedimiento de.descarga de presi6n
Para rellucir el riesgode sufrir graves lesiones corporales, incluyendo inveccibn o lesionescausadas por piezasenrnovimiento o
choqueelbctrico, siempreseguir esteprocedimiento al apagar la m6quina'pulverizadora.airevisar o dar servicio a cualquier pane
del sistema de pulverizaci6n. al instalar, limpiar
o cambiar Ias boquillas, y cada vez que se deja de pulverizar. (11 Enganchar el
pestillo de la pistola. 12) Mover el interruptor elbctrico ION/OFF) a la posici6n OFF lapagadol. 131 Desenchufar el cordbn
elbctrico.
(41 Desenganchar el pestillo de la pistola. (51 Sujetar una parte rnetalica de la pistola bien firme contra un balde de
metal,
y disparar la pistola para descargar la presi6n. 161 Enganchar el pestillo de la pistola. 171 Abrir la velvula de drenaje y tener
list0 un reclipiente para recibir la pintura. (81 Dejar la v6lvula de drenaje abierta hasta que se est6 nuevarnente listo para
pulverizar.
despu.4 de haberseguido elprocedimiento anterior, aflojar MUY LENTAMENTE la tuerca de retenci6n del protector de la bo -
Si se sospecha quelaboquilla o lamangueraesMcompletamenteobstruida. o que no se hadescargadoparcompletolapresidn
despejar la boquilla o la manguera.
quilla
o acoplamientode la punta de la manguera y descargar gradualmentela presi6n. despubs, aflojarlo por completo. Luego,
1 4.5.6
6 307 - 724
i
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..
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:. ..,...
.' ,
..

PELIGRO POR MAL US0 DEL EQUIP0
Seguridad general
Cualquier mal us0del equipo pulverizador o 10s accesorios, tal
como sobrepresurizaci6n. modificaci6n de piezas, us0 de
materiales
y productos quimicos incompatibles, o utilizaci6n
y causen la inyecci6n de fluido u otras lesiones corporales
de piezasdafiadas
o desgastadas, puedehacenquese rompan
graves, incendio, explosi6n o daiion a la propiedad.
NUNCA alterar
o modificar ninguna pieza de este equipo; el
hacerlo podrla causar una averla.
REVISAR con regularidadel equipo pulverizador y reparar o
reemplazar de inmediato las piezas daiiadas o desgastadas.
Esta pulverizadorapuede desarrollar 172 barias
(2500 psi) de
Presi6n del sistema
PRESION DE TRABAJO MAXIMA. Asegurar que todo el
aguantar la presi6n mdxima de trabajo de esta pulverizadora.
equipo pulverizador
y sus accesoriostienen la capacidad para
ponente
o accesorio de este sistema.
NO exceder la presi6n maxima de trabajo de ningun com-
Compatibilidad de material
ASEGURAR que todos 10s materiales y solventes usados son
quimicamente compatibles con las piezas mojadas ilustradas
en
la hoja de datos tbcnicos en la contratapa. Siempre leer las
instrucciones del fabricante del material y solvente antes de
usarlos en esta pulverizadora.
SEGURIDAD EN EL US0 DE LAS MANGUERAS
El fluido que pasa a aka presibn por las mangueraspuede ser
queiio, una rotura
o rajadura debido a cualquier tip0 de
muy peligroso. Sien la manguera se desarrolla un escape pe -
desgaste, daiio o maltrato, el chorroaaka presi6n emitido por
all( puede causar una lesibn por inyecci6nuotras lesiones cor -
porales graves o daiion a la propiedad.
iTODAS LAS MANGUERAS PARA FLUIDOS TIENEN
QUE TENER GUARDAS DE RESORTEI Estas protegen las
tos o cerca de ellos, 10s que podrlantraducirseen roturasde la
mangueras contra dotileces o retorcedurasen 10s acoplamien-
manguera.
Antesde usarlas, APRETAR bienfirmestodaslasconexiones.
El fluido
a aka presi6n puede desalojar unacoplamientosuelto
o dejar que por 81 escape un chorro a alta presibn.
NUNCA usar una manguera que est$ dafiada. Siempre,
abultada,
o acoplamientossueltos o daiiados. Si llegara a en-
revisarla en busca de cortaduras, escapes, abrasi6n. cubierta
contrarse cualquiera de estas condiciones. reemplazar de in-
mediato la manguera. NO intentar reacoplaruna manguerade
aka presi6n o enmendarla con cinta adhesiva u otro material
similar. Una manguera que
ha sido remendadano aguante el
fluido a alta presi6n.
MANEJAR Y PASAR CUIDADOSAMENTE LAS
equipo. Nousar materiales
o solventesqueSean incompatibles
MANGUERAS.
No tirar de las mangueras para mover el
las mangueras a temperaturas sobre 82°C (180°F) o bajo
con el tub0 interno
y la cubierta dela manguera. NO exponer'
-40°C (-40°F).
Continuidad del circuito de puesta a tierra de la
manguera
esencial para mantener conectado a tierra el sistema
La continuidad del circuito de puesta a tierra apropiado es
pulverizador.Es indispensablerevisarla resistenciaelbctrica de
las mangueras de aire .y de fluido por lo menos una vez a la
semana. Si la manguera no tiene una etiqueta en la cual se
especifica la resistencia elbctrica. ponerseen contact0 con el
proveedor
o fabricante de ia manguera para la informaci6n
sobre 10s limites de resistencia. Usar un metro de resistencia
en la gama apropiada para comprobar
la resistencia; si excede
arriesgado tener una manguera sin puesta a tierra o con la
10s llmites recomendados, reemplazarla de inmediato. Es muy
macion sobre RIESGO DE INCENDIO 0 EXPLOSION, mds
puesta a tierra en malas condiciones. Leer tarnbibn la infor-
arriba.
PELIGRO DE INCENDIO 0 EXPLOSION
manguera crea electricidad estatica. Si todas las partes del
El flujo a aka velocidad del fluido al pasar por la bomba y
equipo pulverizador no tienen buena tierra, pueden ocurrir
chispas, convirtiendo al sistema en algo peligroso. TambiBn,
pueden producirse chispas a1 enchufar o desenchufar el cor-
d6n eibctrico. Estas chispas pueden inflamar 10s vapores de
10s solventes y el chorro de fluido pulverizado. particulas de
polvo
y otras sustancias inflamables, sea al aire libre o bajo
techo, lo que podria causar unaexplosi6n 0 incendio y graves
lesiones corporales
y daiios a la propiedad. Enchufar Siempre
la pulverizadora a un tomacorriente que se encuentrea Por lo
menos 6 m (20 pies) de la maquina y del 6rea que se va a
rociar. No enchufar
o desenchufar ningun cordbn el6CtriCo en
el lugar donde se est6 rociando cuando todavla eXiSta la
posibilidadde que queden vapores inflamables en el aire.
Si se observa alguna chispa estatica,
0 se Siente el mas leve
choque el8ctrico. APAGAR DE INMEDIATO LA
exi6n a tierra positiva. No usar nuevamente el sistema hasta
PULVERIZADORA. Revisar todo el sistema en busca de con
-
haber ubicado y corregido el problema.
Para reducir el riesgode chispas estaticas, conectar
a tierra la
Puesta a tierra
pulverizadora y todo el otro equipo de pulverizarque se use o
se encuentre en el lugar que se va a rociar. CONSULTAR el
c6digoelbctrico de la localidadpara las instruccionessobre las
conexiones a tierra exigidas para la zona y tip0 de equipo.
ASEGURAR de conectar
a tierra todo este equipo
pulverizador:
1. Pulverizadora: enchufar el cord6n elktrico. o cable exten -
sor, cada uno con un enchuf de tres patas en buen estado, a
un tomacorriente con puesta a tierra apropiado. No usar un
adaptador. Totos
10s cables extensores tienen que tener tres
hilos
y una capacidad de 15 amperios.
2. Mangueras para fluidos: usar solamente mangueras con
puesta a tierra de
una longitud combinada de 150 m
tambibn al pdrrafo sobre continuidad a tierra de la
1533 pies),para asegurar buena continuidadatierra. Referirse
rnanguera.
3. Pistola: hacer la puesta a tierra conectandola a una
manguera de fluido
y pulverizadora bien conectadas a tierra.
4. Objetoque se estdrociando: de conformidad con el codigo
local.
5. Todos 10s baldes de solvente usados durante el lavado, de
metal, que Sean conductivos. No colocar el balde en una
conformidad con el c6digo local. Usar solamenre baldes de
superficie no conductiva, como papel
o cart6n. que inter-
rumpe la continuidad a tierra.
6. Pars mantener la continuidad a tierra durante el lavado o
descarga depresh, siempre apoyar una parte met6lica de la
pistola bien firme contra el costado del balde de metal,
despuks apretar el gatillo.
Se uridad durante el lavado
0 salpicaduras, siguiendo el procedimiento de lavado
Rejucir el riesgo de lesionespor inyeccion. chispas electricas
especifico dado en .la pagina 12 de estemanual. Seguir el pro-
cedimiento de descarga de presibnen la pdgina 6, y quitar
la boquillarociadoraantes delavar. Apoyar una partemet6lica
y usar la presion
mds baja posiblede fluido durante el lavado.
de
la pistola bienfirme contra el costado de unbaldede metal
PELIGRO DE LAS PIEZAS MOVILES
Las piezas en movimiento pueden pinchar o amputar dedos u
Otras partes del cuerpo. MANTENERSE ALEJADO de las
de la pulverizadora. Desenchufar la pulverizadora y descargar
piezas en movimiento durante el arranque
o funcionamiento
la presibn antes de revisarla o darle servicio, para impedirque
arranque inesperadamente.
IMPORTANT
Se han adoptado las normasde seguridad del gobierno de 10s
Estados Unidos de Norteambricabajo el Acta de Seguridad y
especial las Generales, Parte 1910, y las Normasde Construc-
Salud Ocupacional. DeberAn consultarse estas normas, en
ci6n. Parte 1926.
307 - 724 7
. ..
.. . .
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.,. .
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.,
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,.
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.. ,

TERMS
WARNING: Alerts user to avoid or correct conditions that could cause bodily injury.
CAUTION: Alerts user to avoid or correct conditions that could cause damage to or destruction of equipment.
NOTE: Identifies essential procedures or extra information.
Basic EM 390 Components
A. PumD
B.. Suction tube with strainer
C: Filter
D. ON/OFF switch
E. Fluid pressure control
F. Electric motor
G. Power supply cord
H. Cart
J. Reverse - A - Clean 111 (Complete Sprayers
1. Spray Gun (Complete Sprayers Only)
K. Drain tube
.~
Only) Includes tip.
L. Drain valve/Pressure relief valve
M. 50 ft fluid hose
N. 3 ft whip end- hose
Model 231 - 390 Shown H-%\a
8 307 - 724

1. Connect Hose and Gun (Refer to Fig 1 .)
a. Remove the plastic cap plug from the filter
outlet nipple and screw the
50 ft (15.2 m)fluid
hose onto the nipple.
b. Connect the whip hose between the fluid hose
and the gun inlet connection.
c. Don't
use thread sealant, and don't install the
spray tip yet1
CAUTION
To avoid damaging the pressure control, which
may result in poor equipment performance and
component damage, follow these precautions:
1. Alwaysusea
minimum of 50 ft(15.2 m)of
2. Never
use awire braid hoseas it is too rigid
nylonspray hose.;
3. Never install any shutoff device between
toact as a pulsation dampener.
4. Always
use the main filter outlet. Never
the filter and the main hose.
See Fig 1.
plug this outlet.
2. Fill Packing NutNVet-Cup
(See Fig 2.)
Throat Seal Liquid (TSL), supplied.
Fill the packing nut/wet-cup 1/3 full with Graco
3. Check ElectricalService
a.
Be sure the' electrical service is 120 V,
60 HzAC, 15 Amp Iminimum) and that the
outlet you
use is properly grounded.
b.
Use agroundedextensioncordwhich has3wires
of
a minimum 12 gauge size, and a maximumof
gauges may affect sprayer performance.
100 ft (30 m) long. Longer lengths or smaller
WARNING
static sparking.whichcan cause afire or explosion
Proper grounding is essentialtoreducethe risk of
and result in serious bodily injury
and property
damage.
Readthe warning section FIRE
OR EXPLOSION
the sprayer as explained there.
HAZARD on page 3 of this manual and ground
.
4. Plug in the Sprayer
a.
Be sure the ON/OFF switch is OFF. Refer to
Fig 3.
b. Plug the power supply cord into a grounded
from the spray area to reduce the chance of a
electrical outletthat is
at least20 ft (6 m)away
spark igniting the spray vapors.
c.
Do not remove the third prong of the power
supply cord plug, which is the grounding
prong, and do not
use an adapter.
5. Flush the pump to remove the lightweight motor
towtesting. See " FlushingGuidelines"on page 12
oilwhichwas
left in to protect pumppartsafter fac-
for flushing procedure.
6. Preparethepaintaccordingtothe manufacturer's
a. Removeany skin that may have formed.
recommendations.
b. Stir the paint to dissolve pigments.
c. Strain the paint through
a fine nylon mesh bag
(availableat most paint dealers)toremove par-
is probably the most important step toward
ticles that could clog the filter or spray tip. This
trouble
- free spray painting.
i
Fig
Fig
Fig
1
PACKING NUT/
-
ON/OFF
SWITCH
PRESSURE
CONTROL
KNOB
307-724 9
..
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..
.
.. .
.. .
...
, ..
.. ..
.. >
. ..

OPERATION
Pressure Relief Procedure
WARNING
To reduce the risk of serious bodily injury, in -
cluding injection; splashing in the eyes; injury
from movingpartsor electricshock, alwaysfollow
this procedurewheneveryou shut
off thesprayer,
when checking or servicing any part of the spray
system, when installing, cleaning or changing
spray tips, and whenever you stop spraying.
1. Engagethe gun safety latch.
2. Turn the ON/OFF switch to OFF.
3. Unplugthe power supply cord.
4. Disengage the gun safety latch.
5. Hold a metal part of the gun firmly to the
side of
a grounded metal pail, and trigger
the gun to relieve pressure.
6. Engage the gun safety latch.
7. Open the drain valve/Dressure relief valve.
having a container ready to catch the
drainage.
*
8. Leavethe drain valve/pressure relief Valve
sprayer..again.
open until you are readv to omrate the
If you suspect that the spray tip or hose is com-
pletely CLOGGED,
OR THAT PRESSURE HAS
NOT BEEN FULLY RELIEVED after following the
steps above,
VERY SLOWLY loosenthe tipguard
retaining nut or hose end coupling and relieve
pressuregradually. Then loosenthe nutcomplete
-
ly. Now clear the ti0 or hose obstruction.
~~ ~~ ~ ~~
Primathe Sprayer with Paint.
a. Close thefilter drain valve/pressure reliefvalve.
b. Don't install the spray tip yet1
c. Put the suction tube into the paint container.
d. Turn the pressure adjusting knob
all the way
counterclockwiseto lowerthepressuresetting.
e. Disengage the gun safety latch.
f. Hold e metal pert of the gun firmly against and
aimed into a grounded metal waste container.
See Fig 4. Squeeze the trigger and hold it
open, turn the ON/OFF switch to ON, and
slowly increase the pressure setting until the
sprayer starts. Keep the gumtriggereduntil
all
air is forced out of the system and the aint
flows freely from the gun. Release the
tr P gger
and engage the safety.
NOTE: If the pump is hard to prime, place a con -
tainer under the drain valve/pressure relief
valve and open
it. When fluid comes from
the valve, close
it. Then disengage the gun
safety and proceed as in Step If, above.
g. Check
all fluid connectionsfor leaks. If any are
found, follow the Pressure
Rellef Procedure
tions.
Warning. above, before tightening connec-
2. Installthe Spray Tlp and Tip Guard
fRefer to Fio 5.1
. ~ ~~ "
a. Be sure the gun safety latch is engaged.
b. Unscrew the retaining nut from the gun.
c. Installthe spray tip.
. .- -..
If using the RAC Ill Spray Tip Kit, install the
Keep the packaging instructions for later
RAC
IO spray housing, with the tip installed.
reference.
10 307-724
MAINTAIN FIRM
CONTACT BETWEEN
METAL
- TO - METAL
GUNANOGROUNDED
METAL CONTAINER
Fig 4 u
BE SURE GUN SAFETY LATCH
IS ENGAGED1
d. Tighten the retainingnut by hand until snug.
e. Use a wrench totightenthe retainingnut about
1/8 to 1/6 turn.
Overtightening the retaining nut will damage the
CAUTION
seat gasket and result in leakage.
3. Adjusting the Spray Pattern (Refer to Fig 6.1
a. Increase the pressure adjusting knob setting
just until spray from the gun
is completely
fogging, and to decrease tip wear and extend
atomized.. To avoid excessive overspray and
the life of the sprayer, always
use the lowest
possible pressure needed to get the desired
results.
b. If more coverage
is needed, use e larger tip
rather than increasing the
pressure.
c. Test the spray pattern. To adjust the direction
of the spray pattern, engage the gun safety
latchand loosenthe retainingnut. Position the
tip
so the groove is horizontalfor a horizontal
tighten the retaining nut.
pattern or vertical for
a vertical pattern. Then
GOOD
FULL
PARERN
Fig 6 -a'
I
1
I I
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...,
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..
..
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..
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4. Cleaning a Clogged Tip
WARNING
To reduce the
risk of serious bodilyinjuryfrom in -
jection, use extreme caution when cleaning or
changing spray tips. If the spray tip clogs while
spraying, engage the gun safety latch immediate
-
ly, then follow the procedure in Steps 4a-4e.
below.
pressure
is fully relievedandthe gun safety latch is
NEVER
wipe off builduparoundthe spray tip until
engaged.
a. Cleanthefront of the tip frequentlyduringdaily
operation.
First, follow the Pressure Relief
Procedure Warnlng on page
10. Then use a
solvent - soaked brush to keep fluid from
b. If the spray tip does clog, release the gun trig-
building up and clogging the tip.
c.
If using the RAC Ill Spray Tip Kit, rotate the
ger, and engage the gun safety.
RAC
111 handle 180". See Fig 7. Disengagethe
gun safety, andtrigger the gun into
a grounded
waste container. Engagethe gun safew-again.
Return the handle to the original position.
If using a spray tip kit which is not self -
cleaning, VERY SLOWLY loosenthe tip guard
retaining nut or hose end coupling, and relieve
pressure gradually, then loosen completely.
d. Disengagethe gunsafety, and resumespraying.
Clear the tip or hose, than reassemble.
e. If the tipis still clogged, engage the gun safety,
shutoff and unplug the sprayer, and open the
drain valve/pressura relief valva to reliava
structionsfor cleaningthe RAC
111 SprayTip Kit
pressure. Removethe spray tip and clean it. In-
are given on the packaging supplied with the
kit.
MAINTENANCE
1. Check the pecking nut/wet-cup 'daily. First
follow the Pressure Relief Procedure Warning
on page
10. Be sure the wet - cup is 1/3 full of TSL
et
ell times to help prevent fluid buildup on the
piston rod.and premature wear of packings. The
packing nut should be .tight enough to stop
leakage, but no tighter. Overtighteningmay cause
bindingand excessive packing waar.
Use a screw -
driver and light hammer to adjust the nut. See
Fig 8.
2. Clean the fluid fllter often and whenever the
sprayer is stored. First follow the Pressure Relief
307 - 273, supplied, for the cleaning procedure.
ProcedureWarning on page
10. Refer to manual
3. Flush the sprayer et the end of each work day
and
fill it with mineral spirits to help prevent pump
corrosion end freezing.
See "F/ushing Guidelines "
on page 12.
CAUTION
Never leavewater orany paint inthe sprayer ovar-
night to: (1) prevent pump corrosion: (2) prevent
the fluid from freezing in the pump and pressure
control which can cause
loss of pressure, stalling
spirits for the final flush, follow the Pressure
or serious sprayer damage. Always use mineral
kava the mineral soirits in tha soraver.
Relief Procedure Warnlng on page 10, and
\
Fig 7
Fig 8
4. For very short shutoff periods, leavethe suction
tube in the paint, follow the Pressure Relief Pro-
cedure Warning on page
10, and clean the spray
tip.
5. Coil the hose and hang it on the hose rack when
storing
it, wan for overnight, to help protect the
hosefrom kinking, abrasion, couplingdamage, etc.
6. For the low profile cart, secure the suction hose
assembly to the brackets on the side
of the cart.
WARNING
Refer to the warning section
HOSE SAFETY on
damaged hoses.
page
3 for information on the hazard of using
F
307 - 724 11
. ~.
~ . ..
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FLUSHING GUIDELINES
When to Flush
1. New Sprayer. The Sprayer was factory tested
with motor oil which was
left in to protect pump
parts.
Before
using water - base paint, flush with mineral
soirits. followed bv SoaDv water, and then with
..
dean hater.
Before using oil - base mint. flush with mineral
-
spirits only.
2. ChangingColors. Flushwith a compatiblesolvent
such
as mineral spirits or water.
3. Changing from water - base to oil - base paint.
Flush with soapy water, then with mineral spirits.
4. Changing from oil
- base to water - base paint.
Flush with mineralspirits, followedbysoapy water,
then with clean water.
5. Storage.
Water
- base pelnt: flush with watar, then mineral
spiritsand leavethe pump, hose and gunfilledwith
mineral spirits. Shut off and unplug the sprayer,
ooen the drainvalva/orassure relief valve to relieve
pressure and leave open.
Oll-base Dalnf flush with mineral soirits. Shut off
valdpressura relief valva to relieve pressure and
and unplug the sprayer, open the drain
leave open.
Before
uslng weter - base palnt, flush out mineral
spiritswith soapy water and then with cleanwater.
spirits with the fluid to be sprayed.
When uslng oll-base palnt, flush out the mineral
6. Startup after storage.
How to Flush
1. Follow the Pressure Relief Procedure Warning
on page
10.
2. Remove the filter bowl and screen; see manual
307-273 supplied. Clean the screen separately and
installthe bowlwithout the screen.
-.
Fig
3. Close the filter drain valve/pressure relief valva.
4. Pour one - half gallon (2 liters)of compatible solvent
into
a bare metal pail. Put the suction tube in the
pail.
5. Remove the spray tip from the gun.
6. Disengage the gun safety latch.
To reduce the risk of static sparking and
WARNING
splashing, always remove the spray tip from the
side of
a grounded metal pail when flushing. See
gun, and hold a metalpartof the gunfirmly tothe
7. Point the spray gun into a grounded metal waste
container and with
a metal part of the gun firmly
touchingthe metal container,
squeeze the guntrig-
and reduces splashlng. With the gun triggered,
ger. Thle procedure helps evold static sparklng
turn the ON/OFF switch to ON and slowly turn the
12 307 - 724
MAINTAIN FIRM
METAL - TO - METAL
CONTACT BETWEEN
GUNANDGROUNDED
METAL CONTAINER
Fig 10
pressure adjusting knob clockwise just untll the
solvent comes from the nozzle. Release the trigger
sprayer starts. Keep the gun triggered until clean
and engage the gun safety latch.
See Fig 10.
8. Check all fluid connections for leaks. If any leak,
first follow the Pressure Relief Procedure Warn-
ingon page
10. Thentightenthe connections, start
the sprayer, and recheck the connections for leaks.
9. Remove the suction tube from the pail. Disengage
from the hose.
Do not let the pump run dry for
the gun safety and trigger the gun to force solvent
more
then 30 seconds to avold damaging the
pump packlngsl Then turn the ON/OFF switch to
OFF and engage the gun safety latch.
10. Unplug the power supply cord. Open the drain
valve/pressure relief valve and leave open until you
filter bowl and reinstall the clean screen. Be sura
are ready to
usa the sprayer again. Unscrew the
thescreen andsupportare installedas shownin Fig
9.
11. If you haveflushed with mineralspirits and are go-
watar and then with clean water. Then repeat
ing to
usa a water - base paint, flush with soapy
Step 1.

APPLICATION METHODS
Always hold the gun perpendicular to the surface and
the surface you are spraying.
See Fig 11.
keepthe gunatan even 12 to 14 in. (300 - 356 mmlfrom
steady rate. Start the spraystroke
off the target surface
Begin moving the
gun in a horizontal direction at a
the gun is still moving, and
as you approach the other
and pull the trigger as
the gun is moving. Then, while
edge, release the trigger. This method avoids excess
paint buildup
at the end of each stroke.
gun tip size. A small tip orifice applies less paint and a
Thebest way to control the rate of coverage is with the
narrower pattern. A larger tip orifice appliesmore paint
and a wider pattern.
Do not try to increase coverage by increasing the fluid
pressure! Using the lowest pressure necessary to get
the desired results will help prolong the life of your
sprayer and minimize paint lost by overspray.
For interior corners, such as ona bookcase or inside a
spray. Bydividing thespray patternthis way, the edges
cabinet, aim the guntowardthe center of the corner to
on bothsides are sprayed evenly.
See Fig 13.
RIGHT
I
WRONG
Fig 11
The correct speed for moving the gun will allow a full,
wet coating tobeapplied without runsor sags. Lapping
each stroke about
50% over the previous stroke pro -
duces uniform paint thickness. And spraying in a
uniformpatternalternatelyfrom rightto
left, then left to
right, provides a professional finish.
See Fig 12.
Fig 13
If there is a wind, anglethe spray pattern into the wind
to minimize drifting. Paint from the ground tothe roof.
Shrubs. When nexttothe house, tie back shrubs from
the surface
to be painted with rope and stakes. Then
cover them with
a canvas dropcloth as the painter ap-
soonas thearea ispainted, toprevent possibledamage
proaches the area. Remove the canvas dropcloth as
tothe shrubs.
cover them with
a canvas dropcloth to avoid slipping.
Concrete walks. If the walkways will be walked on,
Otherwise a plastic dropcloth is all that is needed.
Electrical outlets and lamps. Protect electrical outlets
with masking tape. Cover lamps with plastic bags
secured
with masking tape.
Nearby objects. Moveobjects suchas automobiles, pic -
nic tables, lawnfurniture, etc. upwindof the surface to
tective barrier by hanging plastic between two long
besprayed.
In the case of a nearby home, make a pro-
poles.
\
Fig 12
307-724 13
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~~~~
SERVICE
Pressure Relief Procedure
WARNING
To reducethe risk of serious bodily injury, includingfluid injection; splashinginthe eyes or onthe skin; injuryfrom
moving partsor electricshock, alwaysfollow this procedurewhenever you shut
off the sprayer, when checking or
servicing any panof the spray'system, when installing, cleaning or changing spray tips, and whenever you stop
spraying.
2. Turn the ON/OFF switch OFF.
1. Engage the gun safety latch.
4. Disengage the gun safety latch.
3. Unplugthe power supply cord.
5. Hold e metalpart of the gun firmly tothe side of a grounded metalpail, and trigger the gun to relieve pressure.
6. Engage the gun safety latch.
7. Open the drain valve/pressure relief valve, having a container ready to catch the drainage.
8. Leave the drain valve/pressure relief valve open until you are ready to spray again.
If you suspect thespray tip or hose is completely clogged, or thatpressure has not been fully relievedafter follow -
ing the steps above, VERY SLOWLY loosen the tip guard retaining nut or hose end couplingand relieve pressure
gradually, then loosen completely. Now clear the tip
or hose.
TROUBLESHOOTING CHART
-.
PROBLEM
Electric motor won't run
spraying
Electric motor stops while
Electric motor runs, but low or
strokino (See PROBLEM
" Not
no paint output and pump not
enougti-paint pressure " , on page
15, also.)
Electric motor labors when start
-
ing, blowing fuses
Paint leaks into wet-CUD
CAUSE
or building circuit fuse blown
Power or extension cord unplugged or damaged
Motor overloadswitch' has opened
Pressure setting too low
Pressure control frozen or damaged by over
pressurization
or building circuit fuse blown
Power or extension cord unplugged
or damaged
Motor overloadswitch' has opened
Pressuresetting too low
Spray tip or filter plugged
Wrong type extensioncord
Piston ball check not seating
Piston packingsworn or damaged
Intakevalve ball check not seating
Pump frozen
Filter upside down
pressurization
Pressure control frozen or damaged by over
Gear train damaged
Worn pump parts
Snrsver not nrimed
Capacitor failure
Circuit board failure
Throat packingsworn or damaged
~~~
Check, reset or replace
allow to cool, decrease pressure
Unplug power cord, relieve pressure,
Increase
Thaw'*, change, remove or clean***
replace, see page 20
Check, reset or replace
Unplug power cord, relieve pressure,
allow to cool, decrease pressure
Increase
Remove and clean
Use maximum
100 ft (30 ml, 3 wires
12 gauge minimum, grounded exten -
sion cord
~~ -
Service, see 307-793
Replace. see 307-193
Service, see 307-793
Thaw "
Remove and reinstall
Thaw'.. change, remove or clean**'
replace, see page 20
Replace
Service, see 307-793
Prime sprayer, see page 10
Replace capacitor, see page 19
Replace circuit board, see page 21
Replace, see 307-793
I.
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14 307 - 724
i

CAUSE SOLUTION
Spray tip or filter plugged
Wrong
ma hose ThinPaint too viscous Change spray tip.
Spray tip too bigor worn Remove and clean
nylon hose (wirebraid hose unaccep-
Useminimum 50h (15.2 m) static free
table1
PROBLEM
Excessive surge at spray gun
Not enough paint pressure
Tails or fingers
in spray pattern
Paint runs or sags
Spitting from spray gun
-
Static sparking from spray gun
*The elactric mator has an overheatingprotector switch which automatically resets on cooling. If it opensand the electric
motor shuts itself
off, unplugthe power cord and la1 the sprayer cool for 30 to 60 minutes. Also try to correct the cause of
overheating. Always use the lowest pressure settingneeded.
b
I
'*Freezing resultsfrom failure to replacawater - base paint or flushing water with mineralspirits solvent.
*"Over pressurizationresultsfrom (1) using lesa than 50 h (15.2 ml of nylonspray hose, 12) using a wire braid spray hose. 131
valve/pressure relief valw. or (51 usinge clogged or incorrectly assembled filter.
adding
a shutoff device between the pump outlet and the spray gun, 141 attaching a spray hose to the filter drain
Pressuresetting too low
Service, see
307-793
Worn pump parts replace, see page
20
Thaw**, change, remove or clean*'*.Pressure controlfrozen or damaged by
over pressurization
Change spray tip
Spray tip too big or worn Increase
Pressure setting too low Increase
Outletfilter ditty or plugged Clean
- see manual 307-273
Spray tip too big or worn Changespray tip
Paint supply low or pailempty
Fill
Paint too uiscous Thin
Wrong type hose Use minimum
50 h (15.2 m) static free
nylon hose (wirebraid hose unaccep
-
table)
-~
Spray tip too bigor worn I Change spray tip
Paint supply low or pailempty
I Fill
Sprayer sucking air or gun needle not
seating
I
Tighten fittings. servicegun - see
manual
307-633 or 307 - 614 '
Sprayer or work not grounded
I Check, ground
~ ~~
307-724 15
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~~~~ ~~
REMOVING and REPLACING DISPLACEMENT PUMP (See Fig 14)
To reduce the risk of serious bodily injury, in-
the skin; injury from moving parts or electric
cludingfluid injection; splashinginthe eyes or on
NOTE: The displacement pump repair instructions
are in manual 307
- 793, supplied.
Flush the sprayer if possible and relieve pressure.
For the low-profile cart sprayers, remove the clips
holding the hose to the displacement pump.
See the
Parts Drawing on page 27.
Unscrew adapter
(38) from pump. While holding a
wrench on the pump intake valve
(80) to keep it from
loosening.
Unscrew the hose
(52) from the connector (10). .'
and push out the pin (34).
Use ascrewdriverto pushthe retainingspring (33) aside
Loosen the locknut (112)and unscrew the pump from
the drive assembly (55).
When installing a new or repairedpump, first rotatethe
crankshaft
so the connecting rod (54) is in its lowest
position. Push the pump piston rod (79)
all the way
down intothe pumpcylinder (78).Screw the pump into
the drive assembly (55) until you feel the piston rod
pressingagainstthe connectingrod. Unscrewthe pump
until the connector (10) lines up with the outlet hose
(52). then unscrew another complete turn.
Torque the locknut (112) to 70 ft
- lb (95 Nm). The
locknut must be very tight to avoid loosening from
vibration.
Fig
14
Align the holes inthe pistonrod (79)and coupling (36)
and instellthe pin (34). Be sure to push the spring (33)
down in place over the pin ends.
Reassemble the remaining parts reverse from
disassembly.
REMOVlNG'andREPLACING CAPACITOR
WARNING
To reduce the risk of serious bodily injury, in-
the skin; injury from moving parts or electric
cluding fluid injection; splashing in
the eyes or on
shock, always follow the Pressure Relief
Pro -
cedure Warning on page 14 beforecontinuing.
16 307 - 724
Removethe
two screws and the cover of the capacitor
old Capacitor. Connect the flag connectorsof the new
(23d). See Fig 15. Removetheflag connectorsfromthe
capacitor and replace the cover.
NOTE: The replacement capacitor includes a new
resistor, installed.

REMOVING and REPLACING ELECTRIC MOTOR
WARMING
Unscrew the nutson bothends of the conduit (1)from
the connectors.
See Fig 16. Remove the screws (7).
nuts (3) and lockwashers (4). See Fig 15. Remove the
motor from the frame while carefully guiding the wires
through the connector inthe control box. Removethe
conduit
(1) from the wires.
Disconnect the hose
(52) from the connector (10). See Loosen the locknut and unscrew the connector (130)
page 19. You can leave the pump, connecting rod and Install a new motor inthe reverse order.
Fig 14. Remove the drive assembly as described on from the motor, being careful to avoid twisting wires.
bearing assembledto the drive assembly. Drive out the
pin (27)and removethe gear (37).
See Fig 15.
control
(50). See Fig 16. Disconnect the red, pink and
Remove screws (25) and cover (41)from the pressure
brownmotor leadsfrom the circuit board(23f). Discon
-
nectthe green and yellow motor leadfrom the ground -
ing screw (301)and the black motor leadfrom the tog -
gle switch (316).
n.
307 - 724 17
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REMOVING and REPLACING CONNECTING ROD and BEARING (See Fig 17)
To reduce the risk of serious bodily injury, in-
the skin; injury from moving parts or electric
cluding fluid injection; splashing inthe eyas or on
shock, always follow the
Pressure Relief Pro -
cedure Warning on page 14 before continuing.
Remove the pump as described on page
16. Remove
screws and lockwashers
(20 and 18). Remove the bear-
the six screws
(19) and cover (351. Remove the two
ing (531 andconnectingrod (54). slidingthe connecting
rod
(54) off the crankshaft (E).
Use ascrewdrivertopushthe retainingspring (33) aside
and removethe pin
(341 fromcoupling (36). Removethe
coupling from the connecting rod.
Pull the connecting rod out of the bearing. Wipe clean
ingandconnectingrodlinkfor wear or damage. If either
(don't use solvent)and inspectthe surfaces of the bear
-
needs replacing, you should replace both. When install-
ing the rod and bearing, coat the surfaces with
SAE 10
non - detergent motor oil.
Clean and inspectthe crankshaft
(E). Wipe cleanwith a
rag; do not use solvent. If the crankshaft is badlyworn,
replacethe driveassembly
(55) as describedon page 19.
Clean and inspect the connecting rod needle bearing.
Repack bearing with industrial, heavy-duty, extreme-
pressure, lithium
- soap grease.
NOTE: After every 100 hours of operation, or
whenever servicing the pump (whichever
Fig 17
comes first), fillthe cavin, inthe connecting
oil.
rod (54) with SAE 10 non-detergent Assemble the new rodand bearing, being sure to push
thespring
(331 down inplaceoverthe pin (34) ends, and
install inthe reverse order of removal.
!
18 307 - 724
I

REMOVING and REPLACING DRIVE ASSEMBLY (See Fig 18)
r
described on page
18.
Remove the pump, connecting rod and bearing
as
Clean and inspect the gear (37) for wear or damage.
Replaceif necessary.
To remove, drive out the pin (271
and pull the gear off the motor shaft (C). Apply
molybdenumdisulfidespray lubricanttothe gear, allow
to dry, then apply industrial, heavy
- duty, extreme -
pressure, lithium - soapgrease.
Install the new drive assembly in the reverse order
of
removal.
55f) and the drive housing (55). Remove the screws,
Remove screws and lockwashers (55d, 5%
and 55%
lockwashers (82 Et 83) and motor housing (A).
Fig 18
307-724 19
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~~ ~ ~
REMOVING and REPLACING PRESSURE CONTROL
I
, ..
adapter (118)holdingthe filtertothe mountingbracket.
Remove the nut (115) and washer (116) from the
with
a wrench and unscrew the swivel union (84) from
See Fig 20. Hold the nut (H) at the pressure control
the nipple (313). Remove the filter (47).
See Fig 19.
Disconnect the hose (52) from the nipple 1302).
See
Fig 20.
Remove the screws (7), lockwashers (4), and nuts (3).
Remove the pressure control (50) from the frame. See
Fig 20.
Remove the screws (25) and cover (41) from the
pressure control
(50). Disconnect the red, pink and
brown motor leads from the circuit board (23f).Discon-
nect the green and yellow motor lead from the groun
-
ding screw (3011, and the black motor lead from the
toggle switch (316). See Fig 21.
NOTE: The circuit board (23f) is not.includedwith
the pressure control
(50) replacement
assembly. Order separately if needed.
connector
(303). Pull the pressure control 150) away
Unscrew the nut on the end of the conduit (1)from the
from the conduit while carefully guiding the wires
through
the connector (303). See Fig 21.
Loosen the knurled pert of the power cord strain relief
the strain relief up on the power cord to provide
(306). and unscrew it from the pressure control. Slide
clearance, and unscrew the conduit connector (303).
See Fig 21.
Remove the screw (301). conduit connector (303). ter-
and strain relief (306) from the old pressure control.
mind123c), lockwasher 1304). power supplycord (305).
Replace any damaged parts. Assemble these parts to
the new pressure control.
CAUTION
Failure to observe the following may cause poor
performanceor excessive pressureendpermanent
damage to the pressure control:
(1) Alwaysuse nylonspray hose et 50 ft (15.2 m)
(2) Never use a wire braidspray hose.
13) Never attach a spray hose to the filter drain
(4) Never add anytype of shut off devicebetween
valve/pressure relief velve.
(5) Be suretocheckfilterfor cloggingor incorrect
the pump outlet and the spray gun.
(6) Never ellowflushingwater orwater basepaint
assembly if tip clogging frequency increases.
to freeze in the system.
minimum length.
20 307-724
Fig 19
Replace in the reverse order of disassembly and then
calibrate the pressurecontrol.
See pege 22.
WARNING
whenever a new or used microswitchor pressure
The pressure control
MUST be calibrated
control assembly
is removed and reinstalled or
replaced to be sure the control is properly
calibrated. Failure to properly calibrate the
pressure control can cause the sprayer to over-
explosion. It may also prevent the sprayer from
pressurizeend resultincomponent rupture, fireor
obtaining
the maximum working pressure which
would result in poor sprayer performance.
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