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OWNER’S MANUAL

308–030

Rev A

PRO 301

 Airless Paint Sprayer

1/3 GPM, Electric

Model 223–636, Series A

2500 psi (172 bar) MAXIMUM WORKING PRESSURE

TABLE OF CONTENTS

Warnings

2

. . . . . . . . . . . . . . . . . . . . . 

Setup

8

. . . . . . . . . . . . . . . . . . . . . . . . 

Startup

10

. . . . . . . . . . . . . . . . . . . . . . 

Maintenance

11

. . . . . . . . . . . . . . . . . 

Application Techniques

12

. . . . . . . . 

Flushing Guidelines

13

. . . . . . . . . . . 

Troubleshooting Guide

14

. . . . . . . . 

Repair

15

. . . . . . . . . . . . . . . . . . . . . . 

Parts

24

. . . . . . . . . . . . . . . . . . . . . . . 

Accessories

28

. . . . . . . . . . . . . . . . . 

Technical Data

31

. . . . . . . . . . . . . . . 

Dimensions

31

. . . . . . . . . . . . . . . . . . 

Warranty

32

. . . . . . . . . . . . . . . . . . . . 

THE O’BRIEN CORPORATION, 450 E. Grand Avenue, So. San Francisco, CA 94080

COPYRIGHT 1990, 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.Avoid 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 Treatment”.
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 28 to order.

Содержание PRO 301

Страница 1: ...tting safety latch when not spraying Never spray without a tip guard In case of accidental skin injection seek immediate Surgical Treatment Failure to follow this warning can result in amputation or s...

Страница 2: ...ray and reduces the risk of fluid injection when the tip is not installed Check diffuser operation regularly Follow the PRESSURE RELIEF PROCEDURE be low then remove the spray tip Aim the gun into a me...

Страница 3: ...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 resis tance contact the hose supplier or manufact...

Страница 4: ...clencher accidentellement Diffuseur Le diffuseur du pistolet sert diviser le jet et r duire les ris ques d injection accidentelle quand l ajutage n est pas en pla ce V rifier le fonctionnement du dif...

Страница 5: ...au sans mise la terre ou avec une mise la terre in correcte peut entra ner des risques pour votre syst me Lisez aussi LES RISQUES D INCENDIE OU D EXPLOSION RISQUES D INCENDIE OU D EXPLOSION De l lectr...

Страница 6: ...eja 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 inyecci n cuando no est i...

Страница 7: ...n puesta a tierra o con la puesta a tierra en malas condiciones Leer tambi n la informaci n sobre RIESGO DE INCENDIO O EXPLOSION m s arriba PELIGRO DE INCENDIO O EXPLOSION El flujo a alta velocidad de...

Страница 8: ...he gun and main spray hose DO NOT use thread sealant on the hose and gun connections DO NOT install the spray tip until the system is primed 2 Fill the packing nut wet cup 1 3 full with Throat Seal Li...

Страница 9: ...tips and or stop the sprayer 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 s...

Страница 10: ...em and the paint flows freely from the gun Release the trigger and engage the safety latch NOTE If the pump is hard to prime open the valve When fluid comes from the valve close it Disengage the gun s...

Страница 11: ...nd open the pressure drain valve to relieve pressure Loosen the tip guard re taining nut slowly to relieve any additional pressure and then remove the spray tip to clean it See the instructions suppli...

Страница 12: ...ing oil based paint with the paint to be sprayed How To Flush 1 Relieve pressure See page 9 2 Close the pressure drain valve See Fig 6 3 Pour one half gallon 2 liters of compatible solvent into a grou...

Страница 13: ...pattern depends on the fan pat tern of the tip you choose Do not try to increase coverage by increasing the fluid pressure Use the lowest pressure needed for good results This prolongs the life of yo...

Страница 14: ...otor to cool decrease pressure Pressure setting too low Increase pressure Pressure control frozen or damaged by over pressurization Try to thaw2 or replace pressure control Electric motor stops while...

Страница 15: ...re braid hose is unacceptable Paint runs or sags Spray tip to big or worn Change the spray tip Spitting from gun Air in fluid pump or hose Check for loose connections at pump intake and tighten Then p...

Страница 16: ...mping ac tion These parts could be projected through the air and result in serious bodily injury or property damage including damage to the pump connecting rod or bearing housing WARNING 2 Torque the...

Страница 17: ...RQUE NUT ONTO ROD TO 19 FT LB 25 N M 223 4 Torque the nut 214 onto the rod 223 to 19 ft lb 25 N m Use two wrenches to main tain the alignment as mentioned in the NOTE See Fig 13 5 Stack the male gland...

Страница 18: ...ck washers 39 nuts 40 5 Pull the pressure control 18 away from the conduit 13f while carefully guiding the leads through the bushing 91 one at a time 6 Remove the mounting bracket 70 and install it on...

Страница 19: ...gher pressures may result in component rupture fire or explosion To per form this adjustment however the sprayer pressure must be temporarily increased above the normal working pressure Use a new 50 f...

Страница 20: ...If the pressure is lower than 2500 psi 172 bar Unplug the sprayer and relieve pressure Turn the adjustment nut B counterclockwise 1 8 turn or less Repeat steps 4 and 5 If the pressure is higher than 2...

Страница 21: ...damaged 7 Clean the mating surfaces of the bearing and drive housings 8 Evenly lubricate the inside of the bronze bear ing D and fill the cavity of the of the con necting rod E with SAE non detergent...

Страница 22: ...housing and connecting rod assembly A off the crankshaft B 4 Remove the screws 8b and pull the drive housing C off the motor housing D 5 Remove the screws 8c and pull the motor housing D off the moto...

Страница 23: ...nd pull the leads out one at a time CAUTION Always pull the motor leads one at a time to avoid loosening the terminals 8 Remove the motor mounting screws 38 Lift the motor off the frame 9 Install the...

Страница 24: ...spring guards full length 1 27 170 113 TUBE suction 1 28 183 285 ADAPTER 3 8 npt m x 1 2 npsm m 1 29 218 215 PUMP displacement see parts on page 27 1 30 162 453 NIPPLE 1 4 18 npsm m x 1 4 18 npt m 1 1...

Страница 25: ...60 68 66 87 ID LABEL THIS SIDE 86 ID LABEL OTHER SIDE DANGER LABEL 23 3 13c 45 41 36 25 27 37 37 12 81 11 88 39 40 26 31 28 64 51 50 8a 8b 80 85 ID LABEL 84 38 48 49 8 24 13f 13g 13 13a 8c 8d 34 79 32...

Страница 26: ...n the parts list be low Ref 70 REF NO PART NO DESCRIPTION QTY 303 218 916 TRIAC 1 305 110 843 CONNECTOR conduit 2 306 217 492 CORD power supply 1 307 217 012 BARE PRESSURE CONTROL Includes items 307a...

Страница 27: ...1 2 20 sst 1 215 176 760 GUIDE ball sst 1 216 177 929 CYLINDER alloy steel 1 217 176 882 V PACKING polyethylene 3 218 176 997 V PACKING polyethylene 3 219 180 161 WASHER backup aluminum 1 220 180 073...

Страница 28: ...RAY HOSES 223 541 1 4 ID 50 ft 15 m coupled 1 4 npsm f spring guards on both ends 3300 psi 231 bar Max Working Pressure 214 701 3 16 ID 3 ft 0 9 m coupled 1 4 npsm f spring guards on both ends 3300 ps...

Страница 29: ...29 308 030 NOTES...

Страница 30: ...30 308 030 NOTES...

Страница 31: ...Zinc Plated Steel Delrinr Leather Filter Aluminum Carbon Steel Stainless Steel Fluid Inlet 3 4 npt m with 30_ ID chamfer Fluid Outlet Size 1 4 npsm m Dimensions Weight 60 lb 27 Kg Height 17 5 in 444...

Страница 32: ...l be returned to the original purchaser transportation prepaid If inspection of the equipment does not disclose any defect in material or workmanship repairs will be made at a reasonable charge which...

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