Graco 220-627 B Series Datasheet

INSTRUCTIONS–P ARTS LIST 307–827
Rev. E
Supersedes D
and PCN E
120 VAC, 18 AMP
Ultra 1500 Airless Paint Sprayer
3000 psi (210 bar) Maximum Working Pressure
Part No. 220–627, Series B
Basic Sprayer on upright cart without hose or gun.
Part No. 231–053
Complete sprayer on upright cart with hose, gun, RAC
IV DripLess T ip Guard and SwitchT ip
Part No. 223–773, Series A
Same as Model 220–627, except CSA certified
Patents Pending
Table of Contents
Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setup 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Flushing 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Motor Brush Replacement 14. . . . . . . . . . . . . . . . . . . .
Displacement Pump Repair 15. . . . . . . . . . . . . . . . . . .
General Repair 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts, Sprayer 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts, Displacement Pump 26. . . . . . . . . . . . . . . . . . . .
Danger Labels 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions 28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Phone Numbers 28. . . . . . . . . . . . . . . . . . . . . . .
The Graco W arranty and Disclaimers 28. . . . . . . . . .
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
COPYRIGHT 1989, GRACO INC.
This manual contains important
warnings and information.
READ AND RETAIN FOR REFERENCE

NOTE: This is an example of the English language DANGER label on your sprayer . This label is
supplied with the sprayer in other languages. Before operating the sprayer , apply a DANGER label in
the appropriate language for your operators, according to the separate instructions supplied with it.
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 triggering 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 UNDERST AND ALL LABELS AND INSTRUCTION MANUALS BEFORE USE
Spray painting, flushing or cleaning equipment with flammable liquids
in confined areas can result in fire or explosion.
Use outdoors or in extremely well ventilated areas. Ground equipment,
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 cigarettes,
arcs from connecting or disconnecting power cords or turning light
switches
on and of f.
Failure to follow this warning can result in death or serious injury .


WARNINGS
High Pressure Spray Can Cause Serious Injury . For Professional Use Only.
Observe 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 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 W ounds
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 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 T ip 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 injury , including fluid injection,
splashing fluid or solvent in the eyes or on the skin, or injury
from moving parts or electric shock, always follow this proce -
dure 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.
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, wrap a rag around the tip guard re -
taining
nut or hose end coupling and VER Y SLOWL Y loosen
the part to relieve pressure gradually, then loosen com-
pletely.
Now clear the tip or hose.
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1,5 2 3 4 6


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 injury , or fire, explosion or prop -
erty 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 compat -
ible with the wetted parts shown in the TECHNICAL DATA on
page 26. 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 in -
jury
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 injury or property
damage.
All
fluid hoses must have 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 and gas engine. Do not use fluids or solvents which
are not compatible with the inner tube and cover of the hose. DO
NOT expose Graco 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 or using a gasoline engine.
Sparks can ignite fumes from solvents and the fluid being
sprayed, dust particles and other flammable substances,
whether
you are spraying indoors or outdoors, and can cause a
fire or explosion and serious injury and property damage.
If you experience any static sparking or even a slight shock
while using this equipment, Stop spraying immediately.
Check the entire system for proper grounding. Do not use the
system again until the problem has been identified and
corrected.
Grounding
To reduce the risk of static sparking, ground the 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 1 1
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.

4308-827
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 ampu -
tation.
Même sans être sous pression, le fluide éclaboussant ou en -
trant
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 pein -
ture.
Cet appareil N’est P AS un compresseur pneumatique.
TOUJOURS garder la protection de l’ajutage en place sur le pistolet
pendant la pulvérisation.
TOUJOURS observer la March à Suivre pour Détendre la Pres -
sion
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 sécu -
rité
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 chirurgicalement cette
blessure
immédiatement. Ne pas retarder le traitement pour ef fec-
tuer
des recherches sur la toxicité. 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 enlever ni
modifier une partie quelconque du pistolet; ceci risquerait d’en-
traîner un mauvais fonctionnement et des blessures 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 pistolet de
fonctionner. Si le verrou de sécurité n’est pas mis, le pistolet peut se
déclencher accidentellement. V oir la Fig. 1, ci–dessus.
Diffuser
Le diffuseur du pistolet sert à diviser le jet et à réduire les risques
d’injection
accidentelle quand l’ajutage n’est pas en place. Vérifier
le fonctionnement du diffuseur régulièrement. Pour cette vérifica-
tion,
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 main -
tenant
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 pis -
tolet du pulvérisateur pendant la pulvérisation. La protection de
l’ajutage attire l’attention sur les risques d’injection et contribue à
réduire,
mais n’évite pas le risque, que les doigts ou une partie quel -
conque
du corps ne passent accidentellement à proximité immédi -
ate
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 verrou de sécu -
rité
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 bles -
sures par injection de fluide ou celles causées par des éclabous -
sures
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 vérif -
ication,
du reglage ou du nettoyage du systeme ou lors du change -
ment
des ajutages.
1. Engager le verrou de sécurité du pistolet.
2. Basculer l’interrupteur de commande de pression sur ARRET
(OFF).
3. Debrancher
le cordón d’alimentation.
4. Désengager le verrou de sécurité du pistolet. T out en main -
tenant
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 pulvérisateur.
Débrancher
le fil de la bougie.
Si l’on soupçonne que le tuyau ou l’ajutage du est complètement
bouche, ou que la pression n’a pas été complètement libérée
après avoir procede aux operations ci–dessus, desserrer très
LENTEMENT
un raccord du bout du tuyau ou l’écrou de retenue
de la protection de l’ajutage et libérer progressivement la pres-
sion.
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1,5 2 3 4 6

5307-827
RISQUES EN CAS DE MAUVAISE UTILISATION DU MATERIAL
Consignes générales de sécurité
Toute utilisation anormale de l’appareil de pulvérisation ou des ac -
cessoires comme, par exemple, la mise sous une pression exces -
sive,
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 equipe -
ments
et réparer ou remplacer immédiatement les pièces usées ou
abîmées.
Pression
Ce pulvérisateur peut produire une PRESSION MAXIMUM DE TRA -
VAIL 210 bar (3000 lb/po2). S’assurer que tous les éléments du
pulvérisateur
et ses accessoires sont conçus pour résister à la pres -
sion
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 T echnical Data , a page 26. T oujours lire soigneusement les
documents et brochures du fabricant des fluides et solvants utilisés
avant de s’en servir dans ce pulvérisateur .
MESURES DE SECURITE CONCERNANT LES TUY AUX 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 rup -
ture
à la suite de l’usure, de dégâts ou d’une mauvaise utilisation,
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 tuyaux flexibles doivent avoir des ressorts spirale de
protection aux bouts! Les spirales de protection contribuent à evit -
er
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 desserre ou
produire
un jet à haute pression s’échappant par le raccord.
NE JAMAIS utiliser un tuyau endommagé. NE PAS 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 tuyaux avec 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 PAS exposer le
tuyau à des températures 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 essentielle
pour maintenir la mise à la terre de l’ensemble de vaporisation. Véri -
fiez 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 résis -
tance
maximum. Utilisez un mètre de résistance de la gamme ap -
propriée pour votre tuyau et vérifiez la résistance. Si celle–ci
dépasse
les límites recommandées, remplacez le tuyau immédiate -
ment. Un tuyau sans mise à la terre ou avec une mise à la terre incor -
recte peut entraîner des risques pour votre systeme. Lisez aussi
LES RISQUES D’INCENDIE OU D’EXPLOSIÓN ci–dessus.
RISQUES D’INCENDIE OU D’EXPLOSION
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 convenablement
reliées à la masse ou à la terre, des étincelles peuvent se produire
et l’appareil risque d’être dangereux. Des étincelles peuvent égale -
ment se produire à l’occasion du branchement ou du débranche-
ment
du cordón d’alimentation. Les étincelles sont suf fisantes pour
allumer les vapeurs de solvants et le fluide pulvérisé, les fines par -
ticules
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. T oujours 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 pulvérisation 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 ressen -
tez la moindre décharge, ARRÊTEZ IMMÉDIATEMENT LA
PULVÉRISATION.
Vérifiez que le système entier est bien mis à lat -
erre. 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, CONSUL -
TER le code ou les réglementations électriques locales. S’AS-
SURER que tous les équipements de pulvérisation suivants sont
bien
reliés à la terre:
1. Pulvérisateur: Brancher le cordón d’alimentation ou la rallonge
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 . T outes 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 Continuité 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 réglementa -
tions
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: observer 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 continuité 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 appuyée 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 éclabous -
sures,
observer la marche à suivre pour le rincage donnée à la page
11 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 ferme -
ment
appuyée contre le côté d’un seau en métal et utiliser la pres -
sion
la plus faible possible pendant le rincage.

6308-827
ADVERTENCIA
El rociado a alta presión puede causar graves lesiones. Solo para uso profesional. respete los avisos de
advertencia. Lea y entienda todo el manual de instrucciónes antes de manejar el equipo.
PELIGRO DE INYECCION 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 ex -
tremadamente
graves, incluyendo a veces la necesidad de amputa -
ción. También, 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 servicioa cuali -
quier
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 fun -
ciónando
bien antes de cada uso.
Tratamiento médico
Si pareciera que un poco de fluido penetró la piel, conseguir
TRATAMIENTO médico DE URGENCIA DE INMEDIATO. NO
TRATAR
LA HERIDA COMO UN SIMPLE CORTE. Decir al médico
exactamente cua fluido fue.
Aviso al médico: Si se llega a inyectar este fluido en la piel se causa
una lesión traumática. Es importante tratar quirúrgicamente la
lesión
a la brevedad posible. No demorar el tratamiento para in -
vestigar
la toxicidad. La toxicidad es algo de suma importancia en
algunas pinturas exóticas cuando se inyectan directamente al tor -
rente 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 fun -
ciónando bien antes de cada uso. No sacar ni modificar ningúna
pieza
de la pistola pues podria causar el malfunciónamiento 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 des -
pués
sacar la boquilla. Apuntar la pistola a un balde metálico, soste -
niéndola
bien firme contra el. Utilizando la presión más 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
mientras
se está pulverizando. Este protector llama la atención con -
tra
el peligro de inyección y ayuda a reducir , pero no evita, la coloca -
ción
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 llegara
a obstruirse mientras está pulverizando, enganchar el pestillo de la
pistola de inmediato. SIEMPRE seguir el procedimiento de des -
carga de presión
y después sacar la boquilla para limpiarla.
NUNCA limpiar la acumulación de pintura alrededor de la bo– quilla
antes de que se haya descargado por completo la presión y el pes -
tillo
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 pul-
verizar.
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 pulverizar .
Si se sospecha que la boquilla o la manguera está completamente
obstruida, o que no se ha descargado por completo 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 gradual -
mente la presión, después, aflojarlo por completo. Luego,
despejar
la boquilla o la manguera.
01890
1,5 2 3 4 6


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, in -
cendio,
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 pres -
ión DE TRABAJO MÁXIMA. Asegurar que todo el equipo pul-
verizador y sus accesorios tienen la capacidad para aguantar la
presión máxima de trabajo de está pulverizadora. NO exceder la
presión
máxima de trabajo de ningún componente o accesorio 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
26.
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 in -
yección
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 con -
tra
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 encontrarse
cualquiera
de estás condiciónes, reemplazar de inmediato la man -
guera.
NO intentar racoplar una manguera de alta presión o enmen -
darla
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 mangueras. No tirar de las
mangueras
para mover el equipo. No usar fluidos o solventes que
sean incompatibles con el tubo interno 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
manguera
La continuidad del circuito de puestá a tierra apropiado es esencial
para mantener conectado a tierra el sistema pulverizador . Es indis -
pensable
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 manguera
crea electricidad estática. Si todas las partes del equipo pul-
verizador no tienen buena tierra, pueden ocurrir chispas, convir-
tiendo al sistema en algo peligroso. También, 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 iden-
tificado
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 extensor ,
cada uno un enchuf de très patas en buen estádo, a un
tomacorreinte
con puesat a tierra aporpiado. No usar un adap -
tador.
T otos 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 manguera
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 lo -
cal.
6.
Todos los baldes de solvente usados durante el lavado, de con -
formidad
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 interumpe la continuidad
a tierra.
7.
Para mantenar la continuidad a tierra durante el lavado o des -
carga
de presión, siempre apoyar una parte metálica de la pis -
tola
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 P ARA EL LA V ADO, dadas en la página 1 1.
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
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.
WARNING
If you are supplying the 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.
CAUTION
To avoid damaging the pressure control, which may
result in poor equipment performance and compo -
nent damage, follow these precautions:
1. Use nylon spray hose at least 50 ft. long.
2. Never use a wire braid hose; it is too rigid to
act as a pulsation dampener .
3.
Never install any shutof f device between the
filter and the main hose. See Fig. 1.
1. Assemble the gun (106), 3 ft. whip hose (105)
and 50 ft. hose (104).
Don’t install the spray tip
yet.
2. Two gun hookup.
Remove the cap (12) from the
1/4 npsm(m) secondary hose outlet and attach a
minimum 50 ft. long hose. For more flexible gun
movement, install a 3/16 in. ID, 3 ft. whip hose be -
tween the main hose and the gun.
3. Fill the packing nut/wet–cup (216) 1/3 full with
Graco Throat Seal Liquid (TSL), supplied.
4. Check the electrical service. Be sure the electri -
cal service is 120 V , 60 HzAC. 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 extension cords
reduce sprayer performance.
5. With the 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.
6. Flush the pump to remove the lightweight oil
which was left in to protect pump parts after fac -
tory testing. See page 1 1.
Fig. 1

01888
Do not install any
fluid shutof f device here
216
12
46
A 104 105

A
B
C
50


Operation
Fig. 2
01888
A
B
50
42
Fig. 3
1
2
Gun safety latch
shown engaged
0137
12
Gun safety latch
shown disengaged
Fig. 4
1Maintain
firm
metal to metal
contact when
flushing
0143
1
WARNING
To reduce the risk of serious bodily injury , fluid in -
jection, splashing in the eyes or on the skin, or in -
jury from moving parts, always follow the Pressure
Relief Procedure W arning on page 2 before
checking, adjusting, cleaning and shutting down the
sprayer.
Startup
Always use this procedure to help ensure the sprayer
is ready to operate and that you start it safely .
1.
For a first time startup , flush the sprayer . See
page 1 1.
2.
Close the pressure drain valve (50).
3. Don’t install the spray tip until the pump is
primed!
4. Put the suction tube (42) into the paint con-
tainer.
5.
Lower the pressure setting by turning the pres -
sure adjusting knob (B) fully counterclockwise.
6. Disengage the gun safety latch. See Fig 3.
CAUTION
Do not run the sprayer dry for more than 30 sec -
onds to avoid damaging the pump packings.
7. T o prime the pump :
a.
Open the drain valve.
b. T urn the ON/OFF switch to ON.
c. Slowly increase the pressure setting until the
sprayer starts.
d. When fluid is flowing from the valve, turn down
the pressure and close the valve.
e. Hold a metal part of the gun firmly against a
grounded metal waste container . See Fig. 4.
f. T rigger the gun and slowly increase the pres -
sure 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.
g. Release the trigger and engage the gun safety
latch. See Fig 3.
8. Check all fluid connections for leaks . If any
leaks are found, relieve pressure before tightening
the connections.

10 308-827
Operation
9. Install the spray tip and tip guard. 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. T urn the pressure adjusting knob clockwise
just until spray from the gun is completely at -
omized. T o avoid excessive overspray and fog -
ging, and to decrease tip wear and extend the
life of the sprayer , always use the lowest pos -
sible pressure needed to get the desired re -
sults.
b.
If more coverage is needed, use a larger tip
rather than increasing the pressure.
c. T est 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.
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 con -
tainer when checking to see if the tip is clear .
DO NOT try to “blow back” paint; this is NOT an air
spray sprayer .
1.
If the spray tip does clog, release the gun trigger ,
engage the gun safety latch, and rotate the
RAC IV handle 180  . See Fig. 5.
2. Disengage the gun safety latch and trigger the gun
into a waste container . Engage the gun safety
latch again.
Fig. 5
1
2
Handle shown in
spraying position
Gun safety latch
shown engaged
0137
1
2
3. Return the handle to the original position, disen -
gage 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 pressure drain valve to relieve pressure. Clean
the spray tip as shown in manual 307–848, sup -
plied with the RAC IV .
Shutdown and Care
1. Check the packing nut/wet–cup (216) daily. Re -
lieve 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. Tighten the packing nut just enough to
stop leakage. Overtightening may cause binding
and excessive packing wear . Use a screwdriver
and light hammer to adjust the nut. See Fig. 6.
2. Clean the fluid filter (48) often and whenever the
sprayer is stored. First relieve pressure. See man -
ual 307–273 for the cleaning procedure.
3. Fill the connecting rod cavity (A) with motor oil
every 100 hours of operation. Relieve pressure
first. See Fig. 6.
Fig. 6
A
48
216
01892
4. For very short shutoff periods, leave the suction
tube in the paint, relieve pressure, and clean the
spray tip.
5. 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.

11307-827
Flushing
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 sol -
vent.
3. Changing 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.
W ater–base paint: flush with water , then mineral
spirits. Leave the system filled with mineral spirits.
Oil–base paint: flush with mineral spirits.
CAUTION
Never allow water to freeze in the pressure control.
Doing so prevents the sprayer from being started
and causes serious damage to the pressure control.
Push the water out with mineral spirits.
6. Startup after storage. Before using water–base
paint, flush out the 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.
How to Flush
Fig. 7
50
A
B
C
1.
Relieve pressure.
2. Remove the filter bowl (A), support (C) and screen
(B); see manual 307–273. Install the bowl and
support. Clean the screen separately and install
after flushing.. See Fig 7.
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. T urn the pressure adjusting knob all the way coun -
terclockwise to lower the pressure setting.
7. Open the drain valve. T urn on the sprayer and
increase the pressure until until the sprayer starts.
When fluid comes from the valve, close it. Hold a
metal part of the gun firmly against a metal waste
container. T rigger the gun until all air is forced out
of the system and the solvent flows freely from the
gun. Release the trigger and engage the gun
safety latch.
WARNING
T o 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.
0143
8. Remove the suction tube from the pail. Disengage
the gun safety latch and trigger the gun to force
solvent from the hose. Do not run the pump dry for
more than 30 seconds to avoid damaging the
pump packings! Relieve pressure.
9. Leave the pressure drain valve open until you are
ready to use the sprayer again. If the screen was
removed, unscrew the filter bowl and reinstall the
clean screen. Reinstall the bowl, hand tight only .
10.
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.

12 308-827
Troubleshooting
WARNING
Pressure Relief Procedure
T o 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 this procedure whenever you
shut of f the sprayer , when checking or servicing any
part of the spray system, when installing, cleaning or
changing spray tips, and whenever you stop spray -
ing.
1. Engage the gun safety latch.
2. T 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 a grounded metal pail.
T rigger the gun to relieve pressure.
5. Engage the gun safety latch.
6. Open the pressure drain valve. Leave the pres -
sure drain 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 following the steps above , VER Y SLOWL Y
loosen the tip guard retaining nut or hose end cou -
pling to relieve pressure gradually , then loosen com -
pletely
. Now clear the tip or hose obstruction.
Check everything in the guide before disassembling
the sprayer .
TYPE OF PROBLEM WHA T T O CHECK
If check is OK, go to next check
WHA T T O DO
When check is not OK refer to this column
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.
Check position of 15–20 (Lo–High) amp
switch.
Put switch in 15 amp (LO) position.
Sprayer circuit breaker opens Check for located motor rotor . Unplug cord
and try to turn fan blades with a screwdriver .
Repair gear train or pump, if damaged. Thaw
the sprayer , if frozen; See NOTE 1. Replace
the pressure control, if damaged.
Check for shorted motor . Use ohmmeter to
check for shorts between motor leads or
between motor leads and motor frame.
Inspect for damage to motor brush leads.
Replace motor , if necessary.
Check electrical supply with voltmeter . Meter
should read 105–125 V AC.
Connect to outlet of correct voltage.
Sprayer will not run Check pressure control knob setting. Motor
will not run if it is at minimum setting (fully
counterclockwise).
Slowly increase pressure setting to see if
motor starts.
Check for a clogged spray tip. Refer to
separate gun or tip instruction manual.
Relieve pressure. Refer to separate gun or
tip instruction manual for tip cleaning.
Check extension cord for visible damage.
Use a volt meter or test lamp at extension
cord outlet to check.
Replace extension cord.
Check sprayer power supply cord for visible
damage such as broken insulation or wires.
Replace power supply cord.
Check electrical supply with volt meter . Meter
should read 105–125 V AC.
Reset building circuit breaker; replace
building fuse. T ry another outlet.
Check for motor damage. Remove drive
housing assembly . See page 23. T ry to rotate
fan by hand.
Replace motor (1) if fan won’t turn.
Poor spray pattern Check for worn spray tip. Relieve pressure and then replace the tip.
See the separate gun or tip manual.

13307-827
Troubleshooting
TYPE OF PROBLEM WHA T T O CHECK
If check is OK, go to next check
WHA T T O DO
When check is not OK refer to this column
Motor runs and pump strokes,
but output is low or there is no
output.
Check extension cord size and length. Replace cord with a larger size, grounding
type extension cord.
Check paint supply . Refill and reprime pump.
Check for clogged intake strainer . Remove and clean strainer and reinstall.
Check for loose suction tube or loose fittings. T ighten; use thread sealant or sealing tape
on threads, if necessary .
Check for worn spray tip. Follow Pressure Relief Procedure
Warning , then replace tip. See your
separate gun or tip manual.
Check motor brushes; check for loose leads
and terminals, minimum 1/2” brush length,
broken or misaligned springs, or brushes
binding in holders. See page 14.
Replace parts as needed. See page 14.
Check motor armature for shorts by using an
armature tester (growler).
Replace motor . See page 19.
Check to see if pump continues to stroke
when gun trigger is released. With pump on
and primed, trigger gun momentarily , then
release and engage safety latch. Relieve
pressure, turn of f and unplug sprayer .
Service pump. See page 15.
Check to see if intake valve ball and piston
ball are seating properly .
Remove intake valve and clean. Check balls
and seats for nicks; replace if necessary.
See page 16. Strain paint before using to
remove particles that could clog the pump.
Check for leaking around throat packing nut
which may indicated worn or damaged
packings.
Replace packings. See page 15. Also check
piston valve seat for hardened paint or nicks
and replace if necessary . T ighten the
packing nut/wetcup.
Motor runs but pump does not
stroke.
Check displacement pump connecting rod
pin (20). See page 19.
Replace pin, if missing. Be sure retainer
spring (35) is fully in groove all around
connecting rod. See Fig. 38, page 19.
Check for frozen or hardened paint in the
pump (39).
Thaw . See NOTE 1. Plug in sprayer and turn
on. Slowly increase pressure setting to see if
motor starts.
Be sure crank in drive housing rotates; plug
in sprayer and turn on briefly to check. T urn
of
f and unplug sprayer .
Check drive housing assembly for damage
and replace if necessary . See page 23.
Motor is hot and runs
intermittently.
Determine if sprayer was operated at high
pressure with small tips, which causes low
motor RPM and excessive heat build up.
Decrease pressure setting or increase tip
size.
Be sure ambient temperature where sprayer
is located is no more than 90  F and sprayer
is not located in direct sun.
Move sprayer to shaded, cooler area, if
possible.
Determine in sprayer was turned on,
pressurized, but not operating for long
periods of time.
T urn of f sprayer whenever you stop spraying
for a while and relieve fluid pressure.
NOTE 1: Thaw the sprayer if water or water–based
paint has frozen in it, by placing it in a warm area. Do
not try to start the sprayer until it has thawed com -
pletely
. If paint hardened (dried) in the sprayer , replace
the pump packings. See page 15.

14 308-827
Motor Brush Replacement
NOTE: Replace the brushes when they have worn to
about 0.4 in (10 mm). Always check both brushes and
replace them together . A Brush Repair Kit, p/n
220–853, and the spring clip, p/n 1 10–816, are avail -
able. Order separately .
NOTE:
Replacement brushes may last only half as
long as the original ones. To maximize brush life, break
in new brushes by operating the sprayer for at least
one hour with no load (remove the pump connecting
rod pin).
WARNING
Follow the Pressure Relief Procedure W arning
on page 2 to reduce the risk of a fluid injection
injury , splashing in the eyes or on the skin, injury
from moving parts, or electric shock.
1. Remove the motor cover (14) and both inspection
covers (A). See Fig 8.
2. Push in the spring clip (D) to unhook it, and then
pull it out. See Fig 9.
3. Loosen the terminal screw (F). Pull the brush lead
(G) away , leaving the motor lead in place. Remove
the brush (C) and spring (B). See Fig 10.
4. Inspect the commutator for excessive pitting, burn -
ing or gouging. A black color on the commutator is
normal. Have the commutator resurfaced by a
qualified motor repair shop if the brushes seem to
wear too fast.
5. Install the new brush (C) so its lead is in the long
slot (K) of the holder (H). Slide the terminal (E)
under the terminal screw (F) washer . Make sure
the motor lead terminal (G) is still connected at the
screw. T ighten the screw . See Fig 1 1.
6.
Place the spring (A) on the brush (C) as shown in
Fig 1 1.
7.
Push in and hook the spring clip (D). See Fig 1 1.
8.
Repeat for the other side.
CAUTION
Do not run the sprayer dry for more than 30 sec -
onds while checking the brushes to avoid damag -
ing the displacement pump.
9. Reinstall the remaining parts.
Fig. 8
A
14
01891
Fig. 9
1
Fig. 10
Fig. 11 01227
BC
D
AD
C
E
F
G
D
C
HJ
K
1
Note:
Spring must coil
in this direction
2
2
Part No.
110–816
3
3
Minimum brush length:
0.4 in. (10 mm)

15307-827
Displacement Pump Repair
Removing the Pump
WARNING
Follow the Pressure Relief Procedure W arning
on page 2 to reduce the risk of a fluid injection
injury , splashing in the eyes or on the skin, injury
from moving parts or electric shock.
NOTE: Some parts shown Figures 12 to 15 may look
somewhat dif ferent from your sprayer.
1.
Flush the pump, if possible, and relieve pressure
again. Stop the pump with the piston rod in its
lowest position, if possible.
2. Remove the hose (47), clips and drain tube (101).
Remove the suction tube (42); hold the wrench
on the pump intake valve (223) to keep the pump
from loosening. See Fig. 12.
3. Push the retaining spring (35) up. See Fig. 13.
4. Push out the pin (20). See Fig. 14.
5. Loosen the locknut (38) and unscrew the pump
from the bearing housing (27). See Fig. 15.
Tools Needed for Pump Repair
Repair Kit, P/N 220–877
Sleeve Removal T ool, P/N 220–991
Heavy duty vise
1-1/16’ ’ open end wrench for Pump 220–872
2-1/4’ ’ adjustable, open–end wrench
Plastic mallet
Small screwdriver
Throat Seal Liquid
Thread Sealant
NOTE: Soak leather packings in oil before using.
Cleaning and Inspecting Parts
Clean and inspect the parts. Pay particular attention to
the ball seat in the intake valve, which should have no
nicks or wear , and to the inside of the sleeve and the
outside of the piston rod, which should not be worn or
scratched. Replace worn or damaged parts.
Remove and clean the sleeve when you are repacking
the pump. A special sleeve removal tool is available.
See the chart, above, for the tool number for your
pump.
WARNING
Always use the special sleeve removal tool to re -
move the sleeve. Other removal methods could
cause the pump to rupture, resulting in serious
bodily injury . If the sleeve cannot be removed easi -
ly using the tool, return the sleeve and cylinder to
your Graco distributor for removal.
Fig. 12 02553
Fig. 13 02554
Fig. 14 02555
Fig. 15 02556

16 308-827
Displacement Pump Repair
Disassembly
NOTE: Parts included in the Packing Repair Kit, P/N
220–877, are marked with an asterisk (*) in the text
and drawings. Use all the new parts in the kit.
1. Loosen the packing nut (16) and plug (5). Unscrew
the cylinder from the intake valve. See Fig. 16.
2. Disassemble the intake valve. Use a pick to
remove the old gasket (202). Clean and inspect
the parts. See Fig. 17.
3. Reassemble the intake valve using a new gasket
(202*), ball (204*) and pin (221*). See Fig. 17.
4. T ap the piston rod (224) out of the cylinder . See
Fig. 18.
5. Screw the sleeve removal tool’ s large nut (A) into
the top of the cylinder . Screw down the rod to push
the sleeve out. See Fig. 19. Remove the tool.
Clean and inspect the parts.
6. Clamp the piston rod (224) in a vise. Loosen the
retaining nut (21 1). Unscrew the piston valve
(222). See Fig. 20.
7. Disassemble the piston and discard the packings
and glands. See Fig. 21.
8. Remove and discard the throat packings and
glands. See Fig. 22.
Fig. 16 02558
Fig. 17 02559
*204
*202 221*
Fig. 18 02561
224
Fig. 19 02562
A
Fig. 20 02563
211
224
222
Fig. 21 02564
Fig. 22 02565

17307-827
Displacement Pump Repair
Pump Reassembly
1. Clean the piston valve threads. One at a time,
stack the backup washer (203*), seal (215*) (with
lips facing down), and female gland (214*) on the
piston. Alternately stack the polyethylene (212*)
and leather (206*) packings (lips facing up) on the
piston. Then install the male gland (210*). See Fig.
23.
2.
Place the flats of the piston valve in a vise. T ighten
the packing retaining nut against the piston valve
to 4 in-lb (0.35 N.m). See Fig. 24.
Note the alignment of the piston to the packing re -
tainer nut. Maintain this alignment through Steps 4 and
5.
3.
Apply one drop of Locktite to the threads. Place
the ball (225*) on the piston valve. See Fig. 25.
4. While maintaining the alignment, thread the piston
valve assembly into the piston rod just until the
piston valve nut contacts the rod. See Fig. 26.
5. Place the flats of the rod in a vise. Carefully tighten
the piston valve nut (21 1) against the piston rod to
19 ft-lb (27 N.m). Use two wrenches to maintain
the alignment. See Fig. 27.
6. Place the male gland (208*) in the cylinder . Alter -
nately stack the polyethylene (213*) and leather
packings (207*) (lips facing down). Then place the
female gland (209*) in the top of the cylinder . Seat
the packings. See Fig. 28.
Fig. 23 02566
203*
206* 215*
*212
*210
*214
Fig. 24 02567
Torque to 4 in–lb
(0.35 N.m)
Fig. 25
02568
*225
Fig. 26 02569
Fig. 27 02570
Torque to 19 ft-lb
(27 N.m)
Fig. 28
02571
*207
209*
213*
208*

18 308-827
Displacement Pump Repair
7. Loosely install the packing nut and plug. See Fig.
29.
8.
Place a o-ring (17*) in the cylinder . Slide the
sleeve in to the cylinder to seat the o-ring. See Fig.
30. Remove the sleeve.
9. Grease the piston packings and the top edge of
the sleeve. See Fig. 31.
10. Carefully slide the piston assembly into the top of
the sleeve. See Fig. 32.
11. Slide the sleeve/piston rod assembly into the
bottom of the cylinder . See Fig. 33.
12. Grease the intake valve o-ring with non-silicon
grease. Screw the pump cylinder into the intake
valve. T orque to 70 ft-lb (95 N.m). See Fig. 34.
13. T ighten the packing nut (216) hand tight. Screw
the cylinder locknut (A) down to the bottom of the
external cylinder threads. See Fig. 35.
Fig. 29 02572
Fig. 30 02573
217*
Fig. 31 02574
Fig. 32 02575
Fig. 33 02576
Fig. 34 02577
Fig. 35 02578
216
A

19307-827
Displacement Pump Repair
Installing the Pump
NOTE: Some parts in Figures 36 to 40 may look
somewhat dif ferent than your sprayer .
1.
Screw the displacement pump into the bearing
housing (27) until the pin holes align. See Fig. 36.
2. Install the pin (221*). See Fig. 37.
3. Continue to screw the pump into the bearing hous -
ing until the top threads of the pump cylinder are
flush with the face of the bearing housing and the
outlet nipple is straight back. Push the retaining
spring (35) into the groove all the way around the
connecting rod to prevent it from working loose
due to vibration. See Fig. 38.
WARNING
If the pin works loose, it or other parts could break
of f due to the force of the pumping action. These
parts could be projected through the air and result
in serious bodily injury or property damage, includ -
ing damage to the pump, connecting rod or bearing
housing.
4. T
ighten the locknut (38) to 70 ft-lb (97 N.m). See
Fig. 39.
CAUTION
If the locknut (38) loosens during operation, the
threads of the bearing housing (29) will be dam -
aged. Be sure to tighten the locknut firmly .
5. T
ighten the packing nut/ wet-cup just enough to
stop leakage, but no tighter . Fill the wet–cup/pack -
ing nut 1/3 full with Graco TSL. See Fig. 40.
Fig. 36 02579
Fig. 37 02580
221*
Fig. 38 02581
35
Fig. 39 02582
Torque to
70 ft-lb
(97 N.m)
Fig. 40
02583

 
Pressure Control
Replacement
WARNING
Follow the Pressure Relief Procedure W arning
on page 2 to reduce the risk of a fluid injection
injury , splashing in the eyes or on the skin, injury
from moving parts, or electric shock.
NOTE: Refer to Fig. 41 except where noted.
1. Disconnect the hose (47).
2. Disconnect the drain tube (101) from the drain
valve.
3.
Loosen the outside filter bracket nut (28).
Unscrew the fitting (8) and remove the filter .
4.
Remove the pressure control cover (36). Discon -
nect the four motor leads. See Fig. 42.
5. Unscrew the connector (54). Pull the wires out of
the pressure control.
6. Remove the pressure control mounting screws
(37). Remove the pressure control. Install the con -
nector (54) on the new pressure control.
7. Install the new pressure control. Place the seal
(103) around the motor leads and push the seal
into the connector (54).
Power Supply Cord
NOTE: Refer to Fig. 41 except where noted.
1. Remove the back pressure control plate (16).
2. Remove the pressure control cover . Disconnect
the power supply cord leads. See Fig. 42.
3. Loosen the strain relief bushing (B). Remove the
power supply cord (23).
4. Install the new cord.
Fig. 41
8
22
16
84
28
13
40
41
37
54
47
28
101
36
01894
Red
Black
(–)
Black/
white (+)
FRONT VIEW OF PRESSURE CONTROL
01897
BACK VIEW OF PRESSURE CON -
TROL
B
23
01898
Black
Green
White
Fig. 42