Graco Hydra-Spray EH 433 GT Series Operation manual

INSTRUCTIONS-P ARTS LIST 307–111
Rev AC
Supersedes AB
and PCN AC
ELECTRIC-HYDRAULIC AIRLESS P AINT SPRA YER
EH 433 GT HYDRA–SPRA Y
3000 psi (210 bar) MAXIMUM WORKING PRESSURE
Provides 1 gpm at 1000 psi (70 bar)
Model 231–004, Series A, 60 Hz, 120 VAC
Basic sprayer on upright cart without
hose or gun
Model 226–433
Complete sprayer with hose, Silver Plus gun,
RAC IV  DripLess  T ip Guard and SwitchT ip
Model 226–432, Series L, 50 Hz, 220 VAC
Complete sprayer with hose, Flex Plus gun,
RAC IV  DripLess  T ip Guard and SwitchT ip
TABLE OF CONTENTS
Warnings 2 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Avertissement 4 . . . . . . . . . . . . . . . . . . . . . .
Advertencia 6 . . . . . . . . . . . . . . . . . . . . . . . . .
Setup 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Flushing Guidelines 9. . . . . . . . . . . . . . . . . .
Operation 10 . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance 12 . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting Guide 13. . . . . . . . . . . . . .
Repair 14 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Lists and Drawings 18. . . . . . . . . . . .
Accessories 24 . . . . . . . . . . . . . . . . . . . . . . .
Technical Data Back Cover. . . . . . . . . . . . .
Warranty Back Cover. . . . . . . . . . . . . . . . . .
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
COPYRIGHT 1973, GRACO INC.
This manual contains IMPORTANT
INSTRUCTIONS and WARNINGS.
READ AND RETAIN FOR REFERENCE.
Liquids can be injected into the body by high pressure airless spray
or leaks – especially hose leaks.
Keep body clear of the nozzle. Never stop leaks with any part of the
body. Drain all pressure before removing parts.A void accidental trig -
gering
of gun by always setting safety latch when not spraying.
Never spray without a tip guard.
In case of accidental skin injection, seek immediate
“Surgical
T reatment”.
Failure to follow this warning can result in amputation or serious
injury.
FIRE AND
EXPLOSION HAZARD
SKIN INJECTION
HAZARD
READ AND UNDERSTAND ALL LABELS AND INSTRUCTION MANUALS BEFORE USE
Spray painting, flushing or cleaning equipment with flammable liq -
uids
in confined areas can result in fire or explosion.
Use outdoors or in extremely well ventilated areas. Ground equip -
ment,
hoses, containers and objects being sprayed.
Avoid all ignition sources such as static electricity from plastic drop
cloths, open flames such as pilot lights, hot objects such as ciga -
rettes,
arcs from connecting or disconnecting power cords or turn -
ing
light switches on and off.
Failure to follow this warning can result in death or serious injury .
NOTE: This is an example of the DANGER label on your sprayer .
This label is available in other languages, free of charge.
See page 25 to order .

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SAFETY W ARNINGS
HIGH PRESSURE SPRA Y CAN CAUSE SERIOUS INJUR Y.
FOR PROFESSIONAL USE ONL Y . OBSER VE ALL W ARNINGS
Read and understand all instruction manuals before operating equipment.
FLUID INJECTION HAZARD
General Safety
This equipment generates very high fluid pressure. Spray from
the gun, leaks or ruptured components can inject fluid through
your skin and into your body and cause extremely serious bod -
ily injury , including the need for amputation. Also, fluid injected
or splashed into the eyes or on the skin can cause serious dam -
age.
NEVER
point the spray gun at anyone or at any part of the body .
NEVER put hand or fingers over the spray tip. NEVER try to
“blow back” paint; this is NOT an air spray system.
ALWAYS have the tip guard in place on the spray gun when
spraying.
ALWAYS
follow the Pressure Relief Procedure , below , before
cleaning or removing the spray tip or servicing any 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.
Medical Alert––Airless Spray Wounds
If any fluid appears to penetrate your skin, get EMERGENCY
MEDICAL CARE AT ONCE. DO NOT TREAT AS A SIMPLE
CUT.
T ell the doctor exactly what fluid was injected.
Note to Physician : Injection in the skin is a traumatic injury . It
is important to treat the injury surgically as soon as possible.
Do not delay treatment to research toxicity . Toxicity is a
concern with some exotic coatings injected directly into the
blood stream. Consultation with a plastic surgeon or re-
constructive
hand surgeon may be advisable .
Spray Gun Safety Devices
Be sure all gun safety devices are operating properly before
each
use. Do not remove or modify any part of the gun; this can
cause a malfunction and result in serious bodily injury .
Safety Latch
Whenever you stop spraying, even for a moment, always set
the gun safety latch in the closed or “safe” position, making the
gun inoperative. Failure to set the safety latch can result in acci -
dental triggering of the gun.
Diffuser
The gun diffuser breaks up spray and reduces the risk of fluid
injection
when the tip is not installed. Check dif fuser 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 pressure, trigger
the gun. If the fluid emitted is not diffused into an irregular
stream,
replace the dif fuser immediately .
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
helps reduce, but does not prevent, the risk of accidentally
placing your fingers or any part of your body close to the spray
tip.
Trigger Guard
Always have the trigger guard in place on the gun when spray -
ing to reduce the risk of accidentally triggering the gun if it is
dropped
or bumped.
Spray Tip Safety
Use extreme caution when cleaning or changing spray tips. If
the spray tip clogs while spraying, engage the gun safety latch
immediately. ALWAYS follow the Pressure Relief Procedure
and then remove the spray tip to clean it.
NEVER wipe of f build–up around the spray tip until pressure is
fully relieved and the gun safety latch is engaged.
Pressure Relief Procedure
To reduce the risk of serious bodily injury , including fluid in -
jection,
splashing fluid or solvent in the eyes or on the skin,
or injury from moving parts or electric shock, always follow
this procedure whenever you shut of f the sprayer , when
checking or servicing any part of the spray system, when in -
stalling, cleaning or changing spray tips, and whenever you
stop spraying.
1. Engage the gun safety latch.
2. Turn the ON/OFF switch to OFF.
3.
Unplug the power supply cord.
4. Disengage the gun safety latch. Hold a metal part of the
gun firmly to the side of a grounded metal pail, and trig -
ger the gun to relieve pressure.
5. Engage the gun safety latch.
6. Open the pressure drain valve, having a container
ready to catch the drainage. Leave the valve open until
you are ready to spray again.
If you suspect that the spray tip or hose is completely
clogged, or that pressure has not been fully relieved after fol -
lowing the steps above,
VERY SLOWLY loosen the the tip
guard
retaining nut or hose end coupling to relieve pressure
gradually, then loosen completely . Now clear the tip or hose.
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MOVING P ARTS HAZARD
Moving parts can pinch or amputate your fingers or other body
parts. KEEP CLEAR of moving parts when starting or operating
the sprayer . Follow the Pressure Relief Procedure on page 2
before checking or servicing any part of the sprayer , to prevent
it from starting accidentally .
EQUIPMENT MISUSE HAZARD
General Safety
Any misuse of the spray equipment or accessories, such as
overpressurizing, modifying parts, using incompatible chemi-
cals and fluids, 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 bodily 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 equipment regularly and repair or replace
worn
or damaged parts immediately .
Always
wear protective eyewear , gloves, clothing and respira -
tor
as recommended by the fluid and solvent manufacturer .
System Pressure
This sprayer can develop 3000 psi (210 bar) MAXIMUM
WORKING PRESSURE . Be sure that all spray equipment and
accessories used are rated to withstand this pressure. DO NOT
exceed the maximum working pressure of any component or
accessory
used in the system.
Fluid and Solvent Compatibility
All chemicals used in the sprayer must be chemically compatible
with the wetted parts shown in the TECHNICAL DA TA on page
28. Consult your chemical supplier to ensure compatibility .
Do
not use 1,1,1-trichloroethane, methylene chloride, other ha -
logenated hydrocarbon solvents or fluids containing such sol-
vents in this equipment, which contains aluminum and/or zinc
parts.
Such use could result in a serious chemical reaction, with
the possibility of explosion, which could cause death, serious
bodily injury and/or substantial property damage.
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
property
damage.
ALL FLUID HOSES MUST HA VE SPRING GUARDS ON
BOTH ENDS! The 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 pres -
sure spray to be emitted from the coupling.
NEVER use a damaged hose. Before each use, check the en -
tire hose for cuts, leaks, abrasion, bulging cover , or damage or
movement of the hose couplings. If any of these conditions ex -
ist, replace the hose immediately . DO NOT try to recouple high
pressure hose or mend it with tape or any other device. A re-
paired 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. Do not use fluids or solvents
which are not compatible with the inner tube and cover of the
hose. DO NOT expose Graco hose to temperatures 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,
contact
the hose supplier or manufacturer for the maximum re -
sistance 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 un-
grounded or poorly grounded hose can make your system haz -
ardous. Also read FIRE OR EXPLOSION HAZARD.
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
hazardous. Sparking may also occur when plugging in or un-
plugging
a power supply cord. Sparks can ignite fumes from sol -
vents
and the fluid being sprayed, dust particles and other flam -
mable substances, whether you are spraying indoors 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 into a properly grounded outlet. Do not re-
move the grounding prong of the plug, and do not use an
adapter . Extension cords must have three wires.
2. Fluid hoses: use only grounded hoses with a maximum of
500 ft (150 m) combined hose length to ensure grounding
continuity. See Hose Grounding Continuity.
3.
Spray gun: obtain grounding through connection to a prop -
erly
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 cardboard, 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
splashing by following the flushing procedure given on page 9
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 possible fluid pressure during flushing.
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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AVERTISSEMENT
La pulvérisation à haute pression peut causer des blessures très graves.
Réservé exclusivement à l’usage professionnel. Observer toutes les consignes de sécurité.
Bien lire et bien comprendre tous les manuels d’instructions avant d’utiliser le matériel.
RISQUES D’INJECTION
Consignes generales de sécurité
Cet appareil produit un fluide à très haute pression. Le fluide
pulvérisé
par le pistolet ou le fluide sous pression provenant de
fuites ou de ruptures peut pénétrer sous la peau ou à l’interieur
du corps et entrainer des blessures très graves, voir même une
amputation. Même sans être sous pression, le fluide éclabous -
sant
ou entrant dans les yeux peut aussi entrainer des blessures
graves.
NE
JAMAIS pointer le pistolet vers quelqu’un ou vers une partie
quelconque du corps. NE JAMAIS mettre la main ou les doigts
sur l’ajutage du pulvérisateur . NE JAMAIS essayer de “refouler”
la peinture. Cet appareil N’est P AS un compresseur
pneumatique.
TOUJOURS
garder la protection de l’ajutage en place sur le pis -
tolet
pendant la pulvérisation.
TOUJOURS observer la March à Suivre pour Détendre la
Pression donnée plus loin, avant de nettoyer ou d’enlever
l’ajutage
du pulvérisateur , ou d’ef fectuer un travail quelconque
sur une partie de l’appareil.
NE JAMAIS essayer d’arrêter ou de dévier les fuites avec la main
ou le corps.
Avant chaque utilisation, bien s’assurer que les dispositifs de
sécurité
fonctionnent correctement.
Soins medicaux
En cas de pénétration de fluide sous la peau: DEMANDER IM -
MEDIATEMENT DES SOINS MEDICAUX D’URGENCE. NE
PAS SOIGNER CETTE BLESSURE COMME UNE SIMPLE
COUPURE.
Avis au medecin : La pénétration des fluides sous la peau
est un traumatisme. Il est important de traiter chirur-
gicalement
cette blessure immédiatement. Ne pas retar -
der
le traitement pour ef fectuer des recherches sur la toxi -
cité.
Certains revêtements exotiques sont dangereusement
toxiques quand ils sont injectés directement dans le sang.
Il est souhaitable de consulter un chirurgien esthétique ou
un
chirurgien spécialisé dans la reconstruction des mains.
Dispositifs de sécurité du pistolet
Avant chaque utilisation, bien s’assure que tous les dispositifs
de sécurité du pistolet fonctionnent correctement. Ne pas en-
lever ni modifier une partie quelconque du pistolet; ceci
risquerait d’entraîner un mauvais fonctionnement et des bles-
sures graves.
Verrou de sécurité
A chaque fois que l’on s’arrête de pulvérisér , même s’il s’agit d’un
court instant, toujours mettre le verrou de sécurité du pistolet sur
la position “fermée” ou “sécurité” (“safe”) pour empêcher le pis -
tolet
de fonctionner . Si le verrou de sécurité n’est pas mis, le pis -
tolet peut se déclencher accidentellement. V oir la figure,
ci–dessus.
Diffuser
Le dif fuseur du pistolet sert à diviser le jet et à réduire les risques
d’injection accidentelle quand l’ajutage n’est pas en place. Vérifi -
er le fonctionnement du dif fuseur régulièrement. Pour cette vérif -
ication,
détendre la pression en observant la Marche à Suivre
pour Détendre la Pression donnée plus loin puis enlever
l’ajutage du pulvérisateur. Pointer le pistolet dans un seau en
métal, en le maintenant fermement contre le seau. Puis, en
utilisant la pression la plus faible possible, appuyer sur la
gachette du pistolet. Si le fluide projete
n’est pas diffusé sous
forme
de jet irrégulier , remplacer immédiatement le dif fuseur.
Protection de l’ajutage
TOUJOURS maintenir la protection de l’ajutage en place sur le
pistolet du pulvérisateur pendant la pulvérisation. La protection
de l’ajutage attire l’attention sur les risques d’injection et contri -
bue
à réduire, mais n’évite pas le risque, que les doigts ou une
partie quelconque du corps ne passent accidentellement à pro -
ximité
immédiate de l’ajutage du pulvérisateur .
Consignes de sécurité concernant l’ajutage du
pulvérisateur
Faire extremement attention à l’occasion du nettoyage ou du
remplacement des ajutages du pulvérisateur . Si l’ajutage se
bouche
pendant la pulvérisation, mettre immédiatement le ver -
rou
de sécurité du pistolet. T OUJOURS bien observer la Marche
à
Suivre pour Détendre la Pression puis enlever l’ajutage du
pulvérisateur pour le nettoyer .
NE
JAMAIS essuyer ce qui s’est accumulé autour de l’ajutage
du pulvérisateur avant que la pression ne soit completement
tombée
et que le verrou de sécurité du pistolet ne soit engagé.
Marche à Suivre pour Détendre la Pression
Pour réduire les risques de blessures graves, y compris les
blessures par injection de fluide ou celles causées par des
éclaboussures dans les yeux ou sur la peau, des pièces en
mouvement
ou par électrocution, toujours bien observer cette
marche à suivre à chaque fois que l’on arrête le pulvérisateur ,
à
l’occasion de la vérification, du reglage ou du nettoyage du
systeme ou lors du changement des ajutages.
1. Engager le verrou de sécurité du pistolet.
2. Basculer l’interrupteur de commande de pression sur AR -
RET (OFF).
3.
Debrancher le cordón d’alimentation.
4. Désengager le verrou de sécurité du pistolet. T out en
maintenant une partie métallique du pistolet fermement
appuyée contre le côté d’un seau en métal, actionner le
pistolet
pour libérer la pression.
5. Engager le verrou de sécurité du pistolet.
6. Ouvrir la soupape de sécurité et la laisser ouverte jusqu’a
ce que l’on soit pret à se servir de nouveau du pulvérisa -
teur.
Débrancher le fil de la bougie.
Si l’on soupçonne que le tuyau ou l’ajutage du est complète -
ment bouche, ou que la pression n’a pas été complètement
libérée
après avoir procede aux operations ci–dessus, des-
serrer très LENTEMENT un raccord du bout du tuyau ou
l’écrou de retenue de la protection de l’ajutage et libérer
progressivement
la pression.
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RISQUES EN CAS DE MAUVAISE UTILISATION DU MATERIEL
Consignes générales de sécurité
Toute utilisation anormale de l’appareil de pulvérisation ou des
accessoires comme, par exemple, la mise sous une pression
excessive,
les modifications de pièces, l’utilisation de produits
chimiques et de matières incompatibles et l’utilisation de pièces
usées ou abîmées peut causer des dégâts à l’appareil ou des
ruptures de pièces et entraîner une injection de liquide ou
d’autrès blessures sérieuses, un incendie, une explosión ou
d’autrès
dégâts.
NE JAMAIS alterer ou modifier une piece de cet appareil; ceci
risquerait d’entraîner son mauvais fonctionnement.
Vérifier régulièrement tout l’appareil de pulvérisation et ses
equipements
et réparer ou remplacer immédiatement les pièces
usées ou abîmées.
Pression
Ce pulvérisateur peut produire une PRESSION MAXIMUM DE
TRAVAIL 210 bar (3000 lb/po2). S’assurer que tous les éléments
du pulvérisateur et ses accessoires sont conçus pour résister
à
la pression maximum de travail de ce pulvérisateur . NE P AS
depasser
la pression maximum de travail d’aucun des éléments
ou accessoires utilisés avec cet appareil.
Compatibilité chimique des corps
BIEN S’ASSURER que tous les corps des solvants utilisés sont
chimiquement compatibles avec les parties mouillées indiquées
dans les Technical Data, a page 28. Toujours lire soigneuse-
ment
les documents et brochures du fabricant des fluides et sol -
vants
utilisés avant de s’en servir dans ce pulvérisateur .
MESURES DE SÉCURITÉ CONCERNANT LES TUYAUX FLEXIBLES
Le fluide à haute pression circulant dans les tuyaux peut être très
dangereux. En cas de fuite sur le tuyau, de fissure, déchirure ou
rupture à la suite de l’usure, de dégâts ou d’une mauvaise utilisa -
tion,
les projections de fluide haute pression qui en proviennent
peuvent entraîner des blessures graves par pénétration sous
la
peau ou par contact, ainsi que des dégâts matériels.
TOUS LES TUY AUX FLEXIBLES DOIVENT A VOIR DES RES -
SORTS SPIRALE DE PROTECTION AUX BOUTS! Les
spirales
de protection contribuent à eviter la formation de pliures,
de boucles ou de nœuds sur les tuyaux qui pourraient entraîner
la rupture du tuyau à l’endroit du raccord ou à son voisinagé.
SERRER FERMEMENT tous les raccords avant chaque utilisa–
tion. Le fluide sous pression peut faire sauter un raccord des-
serre
ou produire un jet à haute pression s’échappant par le rac -
cord.
NE
JAMAIS utiliser un tuyau endommagé. NE P AS essayer de
refaire le raccord d’un tuyau haute pression ni de réparer le tuyau
avec du ruban adhesif ou par tout autre moyen. Un tuyau réparé
ne peut pas résister au fluide sous pression.
MANIPULER LES TUY AUX A VEC PRECAUTION ET CHOISIR
SOIGNEUSEMENT LEUR CHEMIN. Ne pas déplacer le fluide
en tirant sur le tuyau. Ne pas utiliser de fluides ou de solvants
qui ne sont pas compatibles avec l’enveloppe intérieure ou
extérieure
du tuyau. NE P AS exposer le tuyau à des tempéra -
tures supérieures à 82 C (180 F) ou inférieures à –40
C (–40  F).
Continuité de la mise à la terre des tuyaux
Une bonne continuité de la mise à la terre des tuyaux est essen -
tielle
pour maintenir la mise à la terre de l’ensemble de vaporisa -
tion.
Vérifiez la résistance électrique de vos tuyaux à fluides et
à air , au moins une fois par semaine. Si votre tuyau ne comporte
pas d’étiquette qui précise la résistance électrique maximum,
prenez
contact avec le fournisseur de tuyaux ou la fabricant pour
avoir les límites de résistance maximum. Utilisez un mètre de
résistance
de la gamme appropriée pour votre tuyau et vérifiez
la résistance. Si celle–ci dépasse les límites recommandées,
remplacez le tuyau immédiatement. Un tuyau sans mise à la
terre ou avec une mise à la terre incorrecte peut entraîner des
risques pour votre systeme. Lisez aussi LES RISQUES D’IN-
CENDIE OU D’EXPLOSIÓN ci–dessus.
RISQUES D’INCENDIE OU D’EXPLOSIÓN
De l’électricité statique est produite par le passage du fluide à
grande vitesse dans la pompe et dans les tuyaux. Si toutes les
pieeces de l’appareil de pulvérisation ne sont pas convenable -
ment
reliées à la masse ou à la terre, des étincelles peuvent se
produire et l’appareil risque d’être dangereux. Des étincelles
peuvent
également se produire à l’occasion du branchement ou
du débranchement du cordón d’alimentation. Les étincelles sont
suffisantes pour allumer les vapeurs de solvants et le fluide
pulvérisé,
les fines particules de poussieère ainsi que d’autrès
substances inflammables, quand on pulvérisé à l’intérieur ou à
l’extérieur, et elles peuvent causer un incendie ou une explosión,
ainsi que des blessures graves et des dégâts matériels.
Toujours brancher le pulvérisateur dans une prise se trouvant
à
au moins 6 m (20 pieds) de l’appareil et de l’endroit où se fait
la pulvérisation. Ne pas brancher ou débrancher un cordón
d’alimenations
quel qui’il soit dans la zone où se fait la pulvérisa -
tion quand il y à le moindre risque que des vapeurs encore
présentes
dans l’air prennent feu.
S’il se produit des étincelles d’électricité statique, ou si vous res -
sentez
la moindre décharge, ARRÊTEZ IMMÉDIA TEMENT LA
PULVÉRISATION. Vérifiez que le système entier est bien mis
à
laterre. Ne vous servez pas du système avant que le problème
soit identifié et corrigé.
Mise à la terre ou à la masse
Pour réduire les risques de production d’étincelles d’électricité
statique, le pulvérisateur et tous les équipements utilisés ou se
trouvant dans la zone de pulvérisation doivent être reliés à la
terre
ou à la masse. Pour connaître le detail des instructions de
mise à la terre dans la region et le type particulier d’équipement,
CONSULTER le code ou les réglementations électriques lo-
cales.
S’ASSURER que tous les équipements de pulvérisation
suivants sont bien reliés à la terre:
1. Pulvérisateur: Brancher le cordón d’alimentation ou la ral -
longe
qui doivent être équipés d’une prise à 3 fiches en bon
état, dans une prise de courant convenablement mise à la
terre. Ne pas utiliser d’adaptateur . Toutes les rallonges
doivent
avoir 3 fils.
2. Tuyaux flexibles: Afin d’assurer la continuité de la mise à
la
terre, n’utiliser que des tuyaux comportant une mise à la
terre et ayant une
longueur maximum combinée de 150 m
(1500 pieds). Se reporter également au paragraphe Conti-
nuité
du circuit de mise à la terre des tuyaux.
3. Pistolet : Réaliser la mise à la terre en le raccordant à un
tuyau flexible et à un pulvérisateur dèjá convenablement
reliés
à la terre.
4. Récipient d’alimentation: observer le code ou les régle-
mentations
locales.
5. Objets, matériel ou surfaces reçevant la pulvérisation: ob -
server
le code ou les réglementations locales.
6. Tous les seaux de solvants utilisés pour le rinçage: ob-
server le code ou les réglementations locales. N’utiliser
que des saux métalliques conducteurs de l’électricité. Ne
pas mettre le seau sur une surface non conductrice comme
sur du papier ou du carton car cela interromprait la conti-
nuité
de la mise à la terre.
7. Pour conserver la continuité de la mise à la terre quand on
rince le matériel ou quand on libére la pression , toujours
maintenir
une partie métallique du pistolet fermement ap -
puyée
contre le côté d’un seau en métal puis appuyer sur
la détente du pistolet.
Mesures de sécurité concernant le Rincage
Pour réduire les risques de blessures par pénétration de la peau
et les risques dûs aux etincelles d’electricite statique ou aux
éclaboussures, observer la marche à suivre pour le rincage
donnée
à la page 9 de ce manuel. Observer la “Marche à Suivre
pour Détendre la Pression” donnée à la page 4 en enlever
l’ajutage
du pulvérisateur avant le rincage . Maintenir une partie
métallique du pistolet fermement appuyée contre le côté d’un
seau
en métal et utiliser la pression la plus faible possible pen -
dant
le rincage.


ADVERTENCIA
EL ROCIADO a AL T A PRESIÓN PUEDE CAUSAR GRA VES LESIONES.
SOLO P ARA USO PROFESIONAL. RESPETE LOS A VISOS DE ADVERTENCIA.
Lea y entienda todo el manual de instrucciónes antes de manejar el equipo.
PELIGRO DE INYECCIÓN DE FLUIDO
Seguridad general
Este equipo genera un fluido a una presión muy alta. El rociado
de la pistola, los escapes de fluido o roturas de los componentes
pueden inyectar fluido en la piel y el cuerpo y causar lesiones
extremadamente graves, incluyendo a veces la necesidad de
amputación.
T ambién, el fluido inyectado o salpicado en los ojos
puede causar graves daños.
NUNCA apuntar la pistola hacia alguien o alguna parte del
cuerpo.
NUNCA colocar la mano o los dedos encima de la bo -
quilla. NUNCA tratar de “hacer retornar la pintura”; este NO es
un sistema de rociado de aire.
SIEMPRE tener colocado el protector de la boquilla en la pis-
tolamientras
se está pulverizando.
SIEMPRE seguir el procedimiento de descarga de presión,
dado
másabjo, antes de limpiar o sacar la boquilla o de dar ser -
vicioa
cualiquier equipo del sistema.
NUNCA tratar de parar o desviar los escapes con la mano o el
cuerpo.
Asegurar
que todos los aparatos de seguridad del equipo están
funciónando bien antes de cada uso.
Tratamiento médico
Si pareciera que un poco de fluido penetró la piel, conseguir
TRATAMIENTO
médico DE URGENCIA DE INMEDIA T O. NO
TRATAR LA HERIDA COMO UN SIMPLE CORTE. Decir al
médico
exactamente cua fluido fue.
A viso al médico: Si se llega a inyectar este fluido en la piel se
causa una lesión traumática. Es importante tratar quirúrgica -
mente la lesión a la brevedad posible. No demorar el
tratamiento
para investigar la toxicidad. La toxicidad es algo de
suma importancia en algunas pinturas exóticas cuando se in-
yectan directamente al torrente sanguineo. Sirá conveniente
consultar
a un especialista en cirugia plástica o reconstructiva
de las manos.
Aparatos de seguridad de la pistola pulverizadora
Asegurar que todos los aparatos protectores de la pistola están
funciónando bien antes de cada uso. No sacar ni modificar
ningúna
pieza de la pistola pues podria causar el malfuncióna -
miento
de la misma con las consiguientes lesiones personales.
Pestillo de seguridad
Cada vez que se deje de pulverizar , aunque sea por un breve
momento, siempre colocar el pestillo de seguridad en la posición
“cerrada” lo que deja la pistola inoperante. El no hacerlo puede
llevar al disparo imprevisto de la pistola.
Difusor
El difusor de la pistola dispersa el chorro pulverizado y reduce
el riesgo de inyección cuando no está instalada la boquilla.
Revisar
con regularidad el funciónamiento del difusor . Seguir el
procedimiento de descarga de presión, dado más abajo, y
después
sacar la boquilla. Apuntar la pistola a un balde metálico,
sosteniéndola bien firme contra el. Utilizando la presión más
bajo
posible, disparar la pistola. Si el fluido emitido no sale dis -
perso
en un chorro irregular , reemplazar de inmediato el difusor .
Protector de la boquilla
SIEMPRE tener el protector de la boquilla colocado en la pistola
mientras se está pulverizando. Este protector llama la atención
contra el peligro de inyección y ayuda a reducir , pero no evita,
la colocación accidental de los dedos o cualquier otra parte del
cuerpo cerca de la boquilla.
Seguridad de la boquilla pulverizadora
Tener mucho cuidado al limpiar o cambiar las boquillas. Si llega -
ra
a obstruirse mientras está pulverizando, enganchar el pestillo
de la pistola de inmediato. SIEMPRE seguir el procedimiento
de descarga de presión y después sacar la boquilla para lim -
piarla.
NUNCA
limpiar la acumulación de pintura alrededor de la bo–
quilla antes de que se haya descargado por completo la presión
y el pestillo este enganchado.
Procedimiento de descarga de presión
Para reducir el riesgo de sufrir graves lesiones corporales, in -
cluyendo inyección o lesiones causadas por piezás en
movimiento o choque eléctrico, siempre seguir este
procedimiento
al apagar la máquina pulverizadora, al revisar
o dar servicio a cualquier parte del sistema de pulverización,
al instalar , limpiar o cambiar las boquillas, y cada vez que se
deja de pulverizar .
1. Enganchar el pestillo de la pistola.
2. Mover el interruptor eléctrico (ON/OFF) a la posición OFF
(apagado).
3. Desenchufar
el cordón electrico.
4. Desenganchar el pestillo de la pistola. Sujetar una parte
metálica de la pistola bien firme contra un balde de metal,
y disparar la pistola para descargar la presión.
5. Enganchar el pestillo de la pistola.
6. Abrir la válvula de presión y tener listo un reclipiente para
recibir la pintura. Dejar la válvula de alivio de presión
abierta hasta que se este nuevamente listo para pul-
verizar.
Si se sospecha que la boquilla o la manguera está com-
pletamente obstruida, o que no se ha descargado por com-
pleto
la presión después de haber seguido el procedimiento
anterior, aflojar MUY LENTAMENTE la tuerca de retención
del
protector de la boquilla o acoplamiento de la punta de la
manguera y descargar gradualmente la presión, después,
aflojarlo por completo. Luego, despejar la boquilla o la
manguera.


6
3



PELIGRO POR MAL USO DEL EQUIPO
Seguridad general
Cualquier mal uso del equipo pulverizador o los accesorios, tal
como sobre presurización, modificación de piezás, uso de
matériales
y productos quimicos incompatibles, o utilización de
piezás dañadas o desgastadas, puede hacen que se rompan
y causen la inyección de fluido u otras lesiones corporales
graves,
incendio, explosión o dañon a la propiedad.
NUNCA alterar o modificar ningúna pieza de este equipo; el
hacerlo
podria causar una avería.
REVISAR con regularidad el equipo pulverizador y reparar o
reemplazar
de inmediato las piezás dañadas o desgastadas.
Presión del sistema
está pulverizadora puede desarrollar 210 barías (3000 psi) de
presión DE TRABAJO MÁXIMA. Asegurar que todo el equipo
pulverizador y sus accesorios tienen la capacidad para aguan -
tar la presión máxima de trabajo de está pulverizadora. NO ex -
ceder
la presión máxima de trabajo de ningún componente o ac -
cesorio
de este sistema.
Compatibilidad de fluido
Siempre leer las instrucciónes del fabricante del fluido y solvente
antes de usarlos en está pulverizadora, dadas en la
página
28.
Siempre usar gafas, guantes, vestimetas protectora y un
respiradero,
tal como recomiendan los fabricantes del fluido y
del solvente.
SEGURIDAD EN EL USO DE LAS MANGUERAS
El fluido que escapa a alta presión por las mangueras puede ser
muy peligroso. Si en la manguera se desarrolla un escape, una
rotura o rajadura debido a cualquier tipo de desgaste, daño o
maltrato,
el chorro a alta presión emitido por alli puede causar
una lesion por inyección u otras lesiones corporales graves o
daños
a la propiedad.
!TODAS LAS MANGUERAS PARA FLUIDOS TIENEN QUE
TENER
GUARDAS DE RESORTE EN AMBOS EXTREMOS!
Estas protegen las mangueras contra dobleces o retorceduras
en los acoplamientos o cerca de ellos, los que podrian traducirse
en roturas de la manguera.
Antes de usarlas, APRET AR bien firmes todas las conexiones.
El fluido a alta presión puede desalojar un acoplamiento suelto
o dejar que por el escape un chorro a alta presión.
NUNCA usar una manguera que está dañada. Siempre,
revisarla
en busca de cortaduras, escapes, abrasion, cubierta
abultada, o acoplamientos sueltos o dañados. Si llegara a en -
contrarse cualquiera de estás condiciónes, reemplazar de in-
mediato la manguera. NO intentar racoplar una manguera de
alta presión o enmendarla con cinta adhesiva u otro matérial
similar. Una manguera que ha sido remendada no aguante el
fluido
a alta presión.
MANEJAR Y PASAR CUIDADOSAMENTE LAS MAN-
GUERAS.
No tirar de las mangueras para mover el equipo. No
usar fluidos o solventes que sean incompatibles con el tubo in -
terno
y la cubierta dela manguera. NO exponer las mangueras
a temperaturas sobre 82 C (180 F) o bajo –40 C (–40
F).
Continuidad del circuito de puestá a tierra de la man -
guera
La continuidad del circuito de puestá a tierra apropiado es esen -
cial
para mantener conectado a tierra el sistema pulverizador .
Es
indispensable revisar la resistencia eléctrica máxima 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 eléctrica, ponerse en contacto con el proveedor o
fabricante
de la manguera para la información sobre los límites
de resistencia. Usar un metro de resistencia en la gama
apropiade
para comprobar la resistencia; si excede los límites
recomendados, reemplazarla de inmediato. Es muy arriesgado
tener una manguera sin puestá a tierra o con la puestá a tierra
en malas condiciónes. Leer también la información sobre
RIESGO DE INCENDIO O EXPLOSION
, más arriba.
PELIGRO DE INCENDIO O EXPLOSION
El flujo a alta velocidad del fluido al pasar por la bomba y man -
guera
crea electricidad estática. Si todas las partes del equipo
pulverizador no tienen buena tierra, pueden ocurrir chispas,
convirtiendo al sistema en algo peligroso. T ambién, pueden
producirse
chispas a enchufar o desenchufar el cordón electrico
o al usar un motor de gasolina. estás chispas pueden inflamar
los vapores de los solventes y el chorro de fluido pulverizado,
particulas de polvo y otras sustancias in flamables, sea al aire
libre o bajo techo, lo que podria causar una explosión o incendio
y graves lesiones corporales y daños al a propiedad. Enchufar
siempre la pulverizadora a un tomacorriente que se encuentre
a por lo menos 6 m (20 pies) de la maquina y del area que se
va a rociar . No enchufar o desenchufar ningún cordón electrico
en el lugar donde se está rociando cuando todavia exista la
posibilidad
de que queden vapores inflamables en el aire.
Si ocurre una chispa de electricidad estática o incluso un ligero
choque electrico mientras se usa el equipo, DEJAR DE PUL-
VERIZAR
DE INMEDIA T O. Revisar todo el sistema en busca de
una tierra apropiada. No usar de nuevo el sistema hasta haber
identificado y soluciónado el problema.
Peusta a tierra
Para reducir el reisgo de chispas estáticas, conectar a tierra la
pulverisadora y todo el otro equipo de pulverisar que se use o
se encuentre en el lugar que se va a rociar . CONSULTAR el
codigo
electrico de la localidad para las instrucciónes sobre las
conexiones a tierra exigidas para la zona y tipo de equipo.
ASEGURAR
de conectar a tierra todo este equipo pulverisador:
1. Pulverizadora: enchufar el cordón electrico, o cable exten -
sor, cada uno un enchuf de très patas en buen estádo, a
un
tomacorreinte con puesat a tierra aporpiado. No usar un
adaptador. Totos los cables extensores tienen que tener
très
hilos.
2. Mangueras para fluidos: usar solamente mangueras con
puestá
a tierra de una longitud combinada de 150 m (500
pies), para asequrar buena continuidad a tierra. Referirse
también al párrafo sobre continuidad a tierra de la
manugeura.
3.
Pistola: hace la puestá a tierra conectándola a una man-
guera
de fluido y pulverizadora bien conectadas a tierra.
4. Suministrar un recipiente: de acuerdo al código de la
localidad.
5.
Objeto que se está rociando: de conformidad con el codigo
local.
6.
Todos los baldes de solvente usados durante el lavado, de
conformidad con el código local. Usar solamente baldes
de
metal, que sean conductivos. no colocar el balde en una
superficie no conductiva, como papel o cartón, que inter-
umpe
la continuidad a tierra.
7. Para mantenar la continuidad a tierra durante el lavado o
descarga de presión, siempre apoyar una parte metálica
de la pistola bien firme contra el costado del
balde de
metal,
después apretar el gatillo.
Seguridad durante el lavado
Para reducir el riesgo de que se inyecte o salpique fluido en la
piel, o que ocurra una descarga de electricidad estática, siempre
seguir las INSTRUCCIÓNES PARA EL LAVADO, dadas en la
página
9. Seguir el procedimiento de descarga de presión en
la págna 6, y quita la boquilla rociadora antes de lavar . Apoyar
una parte metalica de la pistola bien firme contra el costado de
un balde de metal y usar le presión más baja posible de fluido
durante el lavado.


SETUP
PACKING NUT/
WET–CUP
FILL 1/3 FULL
WITH TSL
Fig 1
ON/OFF SWITCH
Pull on/Push off
1/4 npsm(m) FLUID
OUTLET NIPPLE
DO NOT INST ALL ANY
SHUT OFF DEVICE HERE
PRESSURE ADJUSTING
KNOB
PRESSURE DRAIN V ALVE
DO NOT INST ALL A SPRA Y HOSE HERE
FULL
ADD
STRAINER
DIPSTICK
PUSH CLIPS T O
RELEASE SHIELD
1Check the Hydraulic Fluid (See Fig 1.) Push in on
the two spring clips and lift the shield of f the sprayer .
Remove the expander plug from the sump fill hole
and lift the strainer/dipstick out of the hole. Using a
clean,
lint–free cloth , wipe the dipstick clean, replace
it in the sump hole, and then remove it and check the
fluid level. The fluid level should be between the ADD
and FULL marks on the dipstick.
If the fluid level is at or below the ADD mark, replace
the strainer/dipstick in the sump hole. Add approved
hydraulic fluid (see ACCESSORIES) through the
hole to bring the level to the FULL mark. One and
three–fourths pints will raise the level from ADD to
FULL.
If
you are supplying your own hoses and spray gun,
be sure the hoses are electrically conductive, that
the
gun has a tip guard, and that each part is rated
for at least 3000 psi (210 bar) Working Pressure .
This is to reduce the risk of serious bodily injury
caused by static sparking, fluid injection or over–
pressurization
and rupture of the hose or gun.
WARNING
2Connect the gun, 3 ft. hose and 50 ft. hose. Don’t
use
thread sealant, and don’t install the spray tip yet.
3Fill the packing nut/wet–cup 1/3 full with Graco
Throat Seal Liquid (TSL), supplied. T o access the
cup,
push in on the two spring clips and remove the
sprayer shield. See Fig 1.



SETUP
WARNING
Proper electrical grounding is essential to reduce
the
risk of fire or explosion which can result in seri -
ous bodily injury and property damage. See the
warning section
FIRE OR EXPLOSION HAZARD
on page 3 for more detailed grounding instructions.
4Check the electrical service to be sure it is appro -
priate for your sprayer ’s wiring. See the next two
paragraphs.
Use a properly grounded outlet. Do not
remove the grounding prong of the power supply
cord. Do not use an adapter. Extension cords must
have
3 wires of a minimum 12 gauge size. Long ex -
tension cords reduce sprayer performance; use a
longer
hose rather than a longer extension cord.
Models 226–433 and 231–004 require 115 Volt, 60
Hz AC, 20 Amp electric service , equipped with a
NEMA NO. 5–20P plug. Since the unit draws 20
amps,
use it only on a separate circuit with no other
loads.
NOTE: A licensed electrician can rewire Models
226–433 and 231–004 for 230 volt service, if
necessary.
See the wiring diagram in Fig 2.
Model 226–432 requires 220 V olt, 50 Hz AC, 15 amp
electric service. Have a licensed electrician install a
plug conforming to local code.
5 With the ON/OFF switch OFF, plug the cord into
a grounded electrical outlet located at least 20 ft.
(6
m) away from the spray area.
6Flush the pump. See page 10.
7Prepare the paint. Follow the paint manufacturer’s
recommendations. Remove any paint skin. Stir to
dissolve hard pigments. Strain the paint through a
fine nylon mesh bag to remove particles that could
clog the filter or spray tip.
This is probably the most
important
step toward trouble-free spray painting.
Fig 2
9
10 435
BROWN
BLUE
GREEN
GREEN
GREEN
BLACK
WHITE BLACK
WHITE
9
104 35
39
105
4
FOR 1 15V SERVICE
(Model 226–433 only)
FOR 230V SERVICE
(Model 226–433 only)
FOR 220V SERVICE
(Model 226–432 only)

 
FLUSHING GUIDELINES – WHEN TO FLUSH
1. New Sprayer . The sprayer was factory tested in
lightweight
oil which was left in to protect pump parts.
Before using water–base paint , flush with mineral
spirits, then warm, soapy water , and then clean
water.
Before using oil–base paint, flush with mineral spir-
its.
2. Changing
Colors. Flush with a compatible solvent.
3. Changing from water–base to oil–base paint.
Flush
with warm, soapy water , then mineral spirits.
4. Changing from oil–base to water–base paint.
Flush with mineral spirits, then warm, soapy water ,
and
then clean water .
5. Storage. Flush as indicated below , shut of f the
sprayer, open the pressure drain valve to relieve
pressure
and leave it open.
Water–base paint: flush with water , then mineral
spirits.
Leave the system filled with mineral spirits.
Oil–base paint: flush with mineral spirits.
6. Startup after storage. Before using water–base
paint, flush out mineral spirits with soapy water and
then clean water. When using oil–base paint, flush
out
the mineral spirits with the paint to be sprayed.
FLUSHING GUIDELINES – HOW TO FLUSH
1. Relieve pressure. See the Pressure Relief Proce-
dure
W arning on page 1 1.
2. Remove the filter bowl and screen; see manual
307–273.
Clean the screen separately and install the
bowl without the screen to flush it. See Fig 3.
Fig 3
PRESSURE
DRAIN
V ALVE
FILTER
BOWL
SCREEN
FIL
TER
SUPPORT
3. Close the pressure drain valve.
4. Pour one–half gallon of compatible solvent into a
grounded
metal pail. Put the suction tube in the pail.
5. Remove the spray tip from the gun, if it is installed.
6. Turn the pressure adjusting knob all the way counter -
clockwise
to lower the pressure setting.
WARNING
To reduce the risk of static sparking and splashing
when
flushing, always remove the spray tip from the
gun, and hold a metal part of the gun firmly to the
side
of grounded metal pail.
Fig 4
MAINTAIN FIRM
MET AL T O MET AL
CONT
ACT WHEN
FLUSHING
7. Hold a metal part of the gun firmly against a metal
waste container.
See Fig 4. Hold the trigger open,
turn
on the sprayer , and slowly increase the pressure
just until the sprayer starts. Keep the gun triggered
until
all air is forced out of the system and the solvent
flows freely from the gun. Release the trigger and en -
gage
the gun safety latch.
NOTE: If the pump is hard to prime, open the drain valve.
When fluid comes from the valve, close it. Pro-
ceed
as in Step 7.
8. Remove the suction tube from the pail. Disengage
the
gun safety latch and trigger the gun to force sol -
vent
from the hose. Do not run the pump dry for more
than 30 seconds to avoid damaging the pump pack -
ings!
Relieve pressure.
9. Remove the suction tube and strainer and clean
them separately . Normal flushing does not ade-
quately
clean these parts.
10. Leave the pressure drain valve open until you are
ready
to use the sprayer again. If the screen was re -
moved,
unscrew the filter bowl and reinstall the clean
screen. Reinstall the bowl, hand tight only .
11. If
you flushed with mineral spirits and are going to use
a water–base paint, flush with soapy water and then
clean water . Relieve pressure.



OPERATION
To reduce the risk of serious bodily injury , fluid injec -
tion, splashing in the eyes or on the skin, or injury
from moving parts, always follow this procedure
whenever you shut off the sprayer, when checking
or
servicing any part of the spray system, when in -
stalling,
cleaning or changing spray tips, and when -
ever
you stop spraying.
1 Engage the gun safety latch.
2T urn the ON/OFF switch to OFF .
3
Unplug the power supply cord.
4 Disengage the gun safety latch. Hold a metal
part of the gun firmly to the side of a grounded
metal pail, and trigger the gun to relieve
pressure.
5 Engage
the gun safety latch.
6 Open the pressure drain valve, having a con-
tainer ready to catch the drainage. Leave the
valve
open until you are ready to spray again.
If you suspect that the spray tip or hose is complete -
ly clogged or that pressure has not been fully re-
lieved after following the steps above,
VER Y
SLOWLY
loosen the tip guard retaining nut or hose
end coupling and relieve pressure gradually , and
then loosen the part completely . Clear the tip or
hose
obstruction.
WARNING
Startup
Always use this procedure to help ensure the sprayer is
ready to operate and that you start it safely .
1For
a first time startup , flush the sprayer . See page
10.
2Close
the pressure drain valve.
3Don’t install the spray tip until the pump is
primed!
4Put the suction tube into the paint container.
5Lower
the pressure setting by turning the pressure
adjusting knob all the way counterclockwise.
6Disengage the gun safety latch.
CAUTION
Do not run the sprayer dry for more than 30 sec-
onds
to avoid damaging the pump packings.
7To prime the pump , hold a metal part of the gun
firmly against a grounded metal waste container .
See
Fig 5. 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
gun triggered until all air is forced out of the system
and
the paint flows freely from the gun. Release the
trigger and engage the gun safety latch.
NOTE: If the pump is hard to prime, place a container
under the pressure drain valve and open it.
When fluid comes from the valve, close it. Pro-
ceed
as in Steps 6 and 7.
Fig 5
MAINTAIN FIRM
MET AL T O MET AL
CONTACT
8Check all fluid connections for leaks . If any leaks
are found, relieve pressure before tightening the
connections.
9Install the spray tip and tip guard. Relieve pres-
sure. Engage the gun safety latch. Install the spray
tip. If you are using the RAC IV tip guard, refer to
manual
307–848 for installation instructions.
10 Adjust the pressure.
a. Turn the pressure adjusting knob clockwise just
until spray from the gun is completely atomized.
To avoid excessive overspray and fogging, and
to decrease tip wear and extend the life of the
sprayer, always use the lowest possible pres-
sure
needed to get the desired results.
b.
If more coverage is needed, use a larger tip
rather
than increasing the pressure.
c. Test the spray pattern. T o adjust the direction of
the spray pattern: engage the gun safety latch,
loosen the retaining nut, position the tip guard
horizontally for a horizontal pattern or vertically
for a vertical pattern and tighten the retaining
nut.

 
OPERATION
Cleaning a Clogged Tip
WARNING
To reduce the risk of serious bodily injury from from
fluid injection:
DO NOT hold a hand, body , or rag in front of the
spray
tip when cleaning or checking it. Always point
the gun toward the ground or into a waste container
when checking to see if the tip is clear .
DO
NOT try to “blow back” paint; this is NOT an air
spray system.
Fig 6
HANDLE SHOWN IN
SPRA YING POSITION.
TURN HANDLE 180  ,
DISENGAGE SAFETY
LATCH AND TRIGGER
GUN TO CLEAR CLOG
GUN SAFETY
LATCH
If you are using a Reverse-A-Clean (RAC)
spray tip:
1 If the spray tip does clog, release the gun trigger , en -
gage the gun safety latch, and rotate the RAC IV
handle
180  . See Fig 6 .
2 Disengage the gun safety latch and trigger the gun
into
a pail. Engage the gun safety latch again.
3 Return the handle to the original position, disengage
the gun safety latch, and resume spraying.
4 If the tip is still clogged, engage the gun safety latch,
shut of f and unplug the sprayer , and open the pres-
sure
drain valve to relieve pressure. Clean the spray
tip as shown in manual 307–848, supplied with the
RAC
IV .
If you are not using a reversing spray tip:
1 VERY SLOWL Y loosen the tip guard retaining nut or
a hose end coupling and relieve pressure gradually ,
then
loosen the part completely . Clear the tip or hose
obstruction, and then reassembly .
2If
the tip is still clogged, engage the gun safety latch,
shutoff and unplug the sprayer, and open the drain
valve
to relieve pressure. Remove the spray tip and
clean it.



MAINTENANCE
1 Check the packing nut/wet–cup daily . Relieve the
pressure. Keep the packing nut/wet–cup 1/3 full with
TSL at all times to help prevent fluid buildup on the
piston
rod and premature wear of packings. T ighten
the packing nut just enough to stop leakage. Over-
tightening
may cause binding and excessive packing
wear. Use a 1/4 inch diameter rod to adjust the nut.
2 Clean the fluid filter often and whenever the spray -
er is stored. First relieve pressure. See manual
307–273
for the cleaning procedure.
3For very short shutoff periods, leave the suction
tube in the paint, relieve pressure, and clean the
spray
tip.
4At the end of each work day , flush the sprayer
and relieve pressure. Leave the pump and hoses
filled
with mineral spirits to help prevent pump corro -
sion and freezing. See FLUSHING GUIDELINES,
page 10.
Fig 7
PLUG
SPOOL
5If the pump stalls at the top of its stroke, relieve
fluid
pressure, remove the plug from the top of the hy -
draulic motor
, and push the spool all the way down.
See Fig 7. Replace the plug and restart the sprayer .
NOTE: Relieving pressure whenever you are not using
the sprayer helps prevent the pump stalling at
the
top of its stroke.
6 Coil the hose and hang it on the hose rack when
storing
it, even for overnight, to help protect the hose
from kinking, abrasion, coupling damage, etc.
7Check the hydraulic fluid level occasionally. Add
fluid
as necessary to keep the fluid level between the
ADD and FULL marks on the dipstick. See page 9.
8Change the hydraulic fluid every 2000 hours of op -
eration or 12 months, whichever comes first. Also
clean the hydraulic pump intake filter and replace the
disposable filter in the return line. First , relieve pres -
sure. then remove the sprayer shield. Refer to Re-
placing
the Electric Motor on page 17 to get at the
filters. Remove the old hydraulic fluid and clean the
sump.
9 Periodically, or if the electric motor is overheating,
unplug the sprayer , relieve pressure, remove the
shield,
and clean all paint and dirt from the shield, fan
blades, motor and cooling fins.
10 To transport the sprayer, empty the wet-cup, or re-
duce
the level of Throat Seal Liquid to 1/3 full or less
and stuf f a rag into the wet-cup. Load the sprayer as
shown in Fig 8. To avoid leakage of hydraulic fluid,
never
lay the sprayer on its side.
Fig 8
LOAD AS SHOWN.
NEVER LAY SPRA
YER ON SIDE.
TROUBLESHOOTING GUIDE
WARNING
To reduce the risk of serious bodily injury , including fluid injection, injury from splashing fluid or solvent in the eyes
or on the skin, moving parts or electric shock, always follow the Pressure Relief Procedure on page 1 1 whenever
you shut off the sprayer, when checking or servicing any part of the spray system, when installing, cleaning or
changing
spray tips, and whenever you stop spraying.
Check everything in the guide before disassembling the sprayer
.
PROBLEM CAUSE SOLUTION
Building circuit breaker opens Check all electrical wiring for damaged
insulation.
Replace any damaged wiring.
Check for other electrical appliances on
circuit.
Shutdown other electrical appliances on
circuit.

 
TROUBLESHOOTING GUIDE
PROBLEM CAUSE SOLUTION
Electric motor won’t run or stops
while spraying
Sprayer unplugged or fuse blown Check fuse, replace.
Defective switch or electric motor Replace switch or motor .
Overheating switch has opened Unplug sprayer
1.
Electric motor runs but pump
won’t work
Hydraulic motor stalled See Step 5 in MAINTENANCE , page 13.
Pressure setting too low Increase pressure setting.
Outlet filter is dirty or plugged Clean filter . See manual 307–273.
T ip is plugged Use Reverse-A-Clean feature to clear clog,
or relieve pressure and remove to clean.
Hydraulic fluid level is low Check hydraulic fluid level, and add fluid
2.
Hydraulic pump is worn or damaged Check pump, replace if needed.
Hydraulic motor is worn or damaged Check motor – see manual 306–980;
replace if needed.
Displacement rod is stuck due to dried fluid Repair pump. See page 16.
Pump runs but output is low Piston ball not seating Service. See page 16.
Piston packings worn or damaged Replace. See page 16.
Intake valve ball not seating Service. See page 16.
Excessive leaking around
hydraulic motor piston rod wiper
W orn or damaged piston rod or seal Replace. See manual 306–980.
Fluid leaks into wet-cup Throat packings worn or damaged Replace. See page 16.
Excessive surge at spray gun Outlet filter is dirty or plugged Clean. See manual 307–273.
T ip is plugged Use Reverse-A-Clean feature to clear , or
relieve pressure and remove tip to clean.
Spray tip is too big or worn Change tip.
Insuf ficient fluid atomization Pressure setting is too low Increase.
Outlet filter is dirty or plugged Clean. See manual 307–273.
Hydraulic fluid level is low Check, add fluid
2.
Hydraulic pump is worn or damaged Check, replace. See page 19.
Hydraulic motor is worn or damaged Check motor – see manual 306–980;
replace if needed.
Fluid coating is too thick Spray tip is too big or it is worn Change tip.
T ails or fingers in spray pattern Pressure drop in hose Use larger hose.
Fluid supply is low or exhausted Check, refill.
Spitting from spray gun Fluid supply is low or exhausted Check, refill.
Static sparking from spray gun Sprayer or work piece is not grounded Stop spraying immediately . Check for proper
grounding as described on page 3.
Gun will not spray Drain valve is open Close.
Hose or tip is clogged Relieve pressure, then clear the clog.
1The electric motor has an overheating protection switch
which
will automatically reset upon cooling. If it opens, un -
plug
the sprayer and let it cool for up to 20 minutes. T ry to
correct the cause of overheating.
2When adding hydraulic fluid to the sump,
use only Graco approved fluid. See ACCESSORIES on
page
25.



HYDRAULIC MOTOR REMOVAL
WARNING
To
reduce the risk of serious bodily injury , including
fluid injection, splashing of fluid in the eyes or on
the
skin, injury from moving parts or electric shock,
always follow the Pressure Relief Procedure
Warning
on page 1 1 before repairing the sprayer .
NOTE:
Refer to Fig 9 for this procedure.
1. Remove the shield (1 19) and hydraulic motor (104).
2. Unscrew the three tie rod nuts (13) and pull the dis -
placement
pump (84) down of f the rods. This will also
pull the hydraulic motor piston down.
3. Remove the cotter pin (15) from the hydraulic motor
piston rod. See Fig 9.
4. Rotate the displacement pump to unscrew the dis-
placement rod (103) from the motor piston. Use a
wrench
on the flats of the displacement rod only .
5. Unscrew the three tie rods (68) and remove the hy-
draulic motor.
6. See manual 306–980, supplied, for hydraulic motor
parts
and repair information. When reassembling, be
sure the motor and its support are absolutely clean.
Fig 9
68
15
13
84
119
104
103

 
DISPLACEMENT PUMP REP AIR
Disassembly
NOTE: For this procedure, see Fig 10 for Model
208–916
and Fig 11 for Model 221–072
1. Screw the extension tube (80) or suction tube
union off the intake valve housing (99). Re-
move
the retaining ring (78) and strainer (79)
from the extension tube and put them in a pail
of clean solvent. See page 20.
2. Unscrew the intake valve housing (99) and re -
move
all parts.Clean the parts with solvent. In -
spect
the carbide seat; replace the housing if
the seat is worn or damaged. If no further ser -
vice
is needed, reassemble the intake valve.
3. Disconnect the displacement rod (103). See
HYDRAULIC MOT
OR REMOV AL , page 14.
4. Remove the cover (59). Loosen the packing
nut (102). Push the displacement rod (103)
down
and pull it and the piston out the bottom
of the housing (101).
NOTE: If the rod (103) is stuck due to dried fluid,
remove the packing nut (102). Fill the
packing
cavity with solvent and let it soak
to free the rod.
5. Unscrew the piston stud (100) and remove the
packings, glands, etc.
6. Screw the packing nut (102) out of the pump
housing
(101). Remove the packings, glands,
etc.
7. Clean
all parts with solvent and inspect them.
Replace worn or damaged parts, paying par -
ticular
attention to the carbide seat on the pis -
ton
stud.
8. Inspect the outer surface of the displacement
rod (103) and the inner surface of the sleeve
(90)
for scratches or scoring which could dam -
age
the packings and cause the pump to leak.
To replace a sleeve (90), contact your Graco
representative. The new sleeve must be in-
stalled
with the tapered end down.
Reassembly Notes
1. Repair kits are available for the pumps. Use all
the parts in the kit for the best results.
Pump Model 208–916: use kit 208–919.
Parts included in this kit are marked with an
asterisk,
i.e. 85* in the text and drawings. See
Fig 10.
Pump Model 221–072: use kit 223–664.
Parts included in this kit are marked with a
dagger,
i.e. 85  , in the text and drawings. See
Fig 1 1.
2. Lubricate all packings before installing them.
Make
sure the lips of the v–packings are fac -
ing against the fluid pressure.
Fig 10
59
68
13
102
15
*96
*98
103
*85
91
100
101
93
86*
99
CARBIDE
SEAT
97
*94
CARBIDE
SEAT TORQUE
T O
75–100 ft–lb
(96–135 N.m)
TORQUE TO
65–75 ft–lb
(88–96 N.m)
HYDRAULIC
MOTOR
PISTON ROD
USE WRENCHES
ON FLA
TS ONL Y
Model 208–916
See Model 221–072 on page 17
TORQUE T O
15–25 ft–lb
(20–34 N.m)
90 T
APERED END DOWN
84
92
88
LIPS OF THROA T
V–P ACKINGS MUST
FACE DOWN
96
98
88
92
LIPS OF THROA T
V–P
ACKINGS MUST
F ACE UP
96
98



DISPLACEMENT PUMP REPAIR
Reassembly
NOTE: For this procedure, see Fig 10 for Model
208–916
and Fig 11 for Model 221–072
1. For Pump 208–916, with the lips of v–pack-
ings facing DOWN, install these parts in the
pump housing (101): male gland (98*), three
leather packings (88*), packing (92*),
female
gland (96*).
For Pump 221–072, with the lips of v–pack-
ings facing DOWN, install these parts in the
pump housing (101): poly packing (92), two
leather
packings (88  ), poly packing (92  ), fe -
male
gland (96 ).
2. Loosely screw the packing nut into the
housing.
3. For Pump 208–916, with the lips of v–pack-
ings
facing UP , install these parts on the piston
stud (100): female gland (96*),  pack-
ing (92*), three leather packings (88*), male
gland (98*), packing retainer (91), and ball
(85*).
For Pump 221–072, with the lips of v–pack-
ings
facing UP , install these parts on the piston
stud (100): poly packing (92 ), two leather
packings (88 ), poly packing (92 ), male
gland (98 ), packing retainer (91), and ball
(85).
4. Screw
the piston stud (100) into the displace -
ment rod (103) and torque to 65–75 ft–lb
(88–100
N.m).
5. Lubricate the outside of the displacement rod
(103) and the inside of the sleeve (90). Slide
the displacement rod into the pump housing
(101) from the bottom until it protrudes
through the packing nut (102). T ighten the
packing
nut just enough to prevent leaking.
6. Screw the displacement rod (103) into the hy -
draulic
motor piston. Install the cotter pin (15).
7. Screw the three tie rod nuts (13) onto the tie
rods to attach the displacement pump to the
hydraulic
motor . T orque the nuts to 15–25 ft–lb
(20–34 N.m).
8. Install the ball (86* ), guide (97), o–ring
(94*), and retainer (95) in the intake valve
housing. Line up the holes and insert the pin
(93). Screw the intake valve into the pump
housing (101) and torque to 75–100 ft–lb
(100–135
N.m).
9. Install the strainer (79) and retaining ring (78)
in the extension tube (80), if used. Apply sea -
lant to the threads of the intake valve and in-
stall
the tube.
TORQUE T O
15–25 ft–lb
(20–34 N.m)
Fig 1 1
59
68
102
15
96
98
103
85
91
100
101
93
86
99
CARBIDE
SEAT
97
94
CARBIDE
SEAT TORQUE
T O
75–100 ft–lb
(100–135 N.m)
TORQUE TO
65–75 ft–lb
(88–100 N.m)
HYDRAULIC
MOTOR
PISTON ROD
USE WRENCHES
ON FLA TS ONL Y
13
Model
221–072
See Model 208–916 on page 16
90 TAPERED
END DOWN
95
92
88
92
LIPS OF THROA T
V–P ACKINGS MUST
FACE DOWN
96
98
92
88
92
LIPS OF THROA T
V–P ACKINGS MUST
F ACE UP
96
98
84
PTFE
PTFE

 
ELECTRIC MOTOR REPLACEMENT
Fig 12
75
26
46
44
16
66
47
74
34
65
82
17
9
4
55
63
5
NOTE:
Refer to Fig 12 for this procedure.
If the electric motor (63) won’t run and the circuit, on/off
switch and fuse are good, relieve pressure, unplug the
sprayer
and proceed as follows.
1. Remove the shield (1 19), the four screws (9) and
washers (17) and the upper fan guard (82). Loosen
the
fan blade setscrew and remove the fan (26).
2. Remove the switch box cover (34) and disconnect
the power cord wires. Do not to scratch the smooth
mating surfaces of the switch box (65) and cover
(34).
3. Drive out the two spring pins (16) and then pull out
the handle (75). Hook the switch box conduit with a
hoist
and lift the unit about 6 in. (150 mm) of f the floor .
Pull the cart frame (74) down out of the support
mounting
(44) and move it out of the way .
4. Remove the eight screws (4) and washers (5) hold -
ing the reservoir mounting (44). Raise the unit high
enough
for the reservoir (66) to clear . Pull the reser -
voir
down of f the unit and pour out the hydraulic fluid.
5. Carefully lower the unit and tilt it back until the arms
of the support mounting (44) are resting on the floor .
6. Put the cart handle (75) through the arms. Hold the
hook
on the switch box (65) as you lower the unit to
make sure it doesn’t slip of f.
7. Remove the four electric motor mounting screws (7
–
see page 20), hold the motor (63) by the shaft and
switch box (65), and then rock it from side to side to
free it from the support mounting. Carefully pull it out
of the cooling coils (46).
8. Screw the switch box (65) and nipple (1 1 – see page
20) out of the motor . T ake the coupling off the motor
shaft and install it on the new motor . When installing
the nipple and switch box, engage the threads at
least
five full turns.
9. Carefully slide the new motor through the cooling
coils (46), forcing it into the support mounting, and
tightly
install the mounting screws.
10. Set the gap between the two coupling halves at
0.31 in. (0.8 mm), and then tighten the coupling
setscrew
securely. See Fig 13, page 19.
11. Clean the reservoir (66) of sediment and reassemble
the unit using a new gasket (47). Fill the hydraulic
fluid
reservoir through the fill hole filter (55).



HYDRAULIC PUMP REPAIR
Electric motor wiring diagram See Fig 13.
Model 226–433 and 231–004 are wired for 1 15 volt ser -
vice. It can be rewired for 230 volt service. Model
226–432 is wired for 220 volt service. Check your local
code
before rewiring it for 1 10 volt service, which draws
22 amps.
Fig 13
9
10 435
BROWN
BLUE
GREEN
GREEN
GREEN
BLACK
WHITE BLACK
WHITE
9
104 35
39
105
4
FOR 1 15V SERVICE
(Models 226–433 and 231–004 only)
FOR 230V SERVICE
(Models 226–433 and 231–004 only)
FOR 220V SERVICE
(Model 226–432 only)
Replacing the hydraulic pump
1. Unplug the sprayer. Relieve pressure. Remove the
shield (119). Disassemble the sprayer as in ELEC-
TRIC MOT
OR REPLACEMENT , page 18.
2. Loosen the setscrew in the coupling half (19). Push
the coupling against the hydraulic pump (64). See
Fig
12. Remove the four screws (1), the washers (5)
(see page 20) and the hydraulic pump. Discard the
o–ring
seals. See Fig 14,15 and page 20.
3. Remove the adjusting sprocket retaining nut (29)
and pull the sprocket of f the adjusting nut. See Fig
14.
4. Apply light grease to the o–rings. Place the o–rings
on the pump mounting. Put the coupling half on the
shaft
of the new pump and leave it loose. See Fig 14.
5. Carefully put the pump in place on the mounting so
you
don’t disturb the o–ring seals. Install the mount -
ing
screws tightly . Push the coupling half into the oth -
er
coupling half until there is a 0.31 in. (0.8 mm) clear -
ance between them, and then tighten the coupling
setscrew
firmly . See Fig 14.
6. Put the adjusting chain onto the sprocket, then onto
the adjusting nut, and then screw the retaining nut
(29)
onto the stud and tighten until snug. Finally , back
off the nut 1/12 to 1/8 turn. See Fig 14.
7. Clean the reservoir of sediment. Reassemble the
sprayer.
Pour hydraulic fluid into the reservoir . Check
the fluid level and add fluid as necessary .
Fig 14
1/32”
(0.8 mm)
GAP
63
46
20
19
7
29
64
45
TIGHTEN SNUGLY AND THEN
BACK OFF 1/12 T O 1/8 TURN
44
Fig
15
19
64
O–RING
102–620
O–RING
104–130

 
PARTS DRA WING
ÇÇ
ÇÇ
ÇÇ
ÇÇ
ÇÇ
Ç
Ç
Ç
104
76
68 85
42
130
139
73
15
59
40
80
79
78
67
13
60
64
45
20
49
24
66
54
4
36
74
39 70
12
39 135
43
*21
55
6
47
46
58
*50
*28
51
22
25
75
48
58
2
3
44
16
27
10*
14 61
14
53
5
7
5
152
57
29
19
131
84
143
142
144
72
148
141
147
LABEL
LABEL
ÉÉÉÉÉ
ÉÉÉÉÉ
ÉÉÉÉÉ
ÉÉÉÉÉ
ÉÉÉÉÉ
Ref 56
Ref 41
Ref 10
Ref 41
Ref 10
Ref 44
Upper chain sprocket
56
41
10
SEE DET AIL
ABOVE LEFT