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INSTRUCTIONS-PARTS LIST

307–111

Rev AC

Supersedes AB

and PCN AC

ELECTRIC-HYDRAULIC AIRLESS PAINT SPRAYER

EH 433 GT HYDRA–SPRAY

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

 Tip Guard and SwitchTip

Model 226–432, Series L, 

50 Hz, 220 VAC

Complete sprayer with hose, Flex Plus gun, 

RAC IV

 DripLess

 Tip Guard and SwitchTip

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.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 25 to order.

Summary of Contents for Hydra-Spray EH 433 GT 226-432 L Series

Page 1: ...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 la...

Page 2: ...the risk of fluid injection when the tip is not installed Check diffuser operation regularly Follow the Pressure Relief Procedure below then remove the spray tip Aim the gun into a metal pail holding...

Page 3: ...ratures 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...

Page 4: ...er Le diffuseur du pistolet sert diviser le jet et r duire les risques d injection accidentelle quand l ajutage n est pas en place V rifi er le fonctionnement du diffuseur r guli rement Pour cette v r...

Page 5: ...steme Lisez aussi LES RISQUES D IN CENDIE OU D EXPLOSI N ci dessus RISQUES D INCENDIE OU D EXPLOSI N De l lectricit statique est produite par le passage du fluide grande vitesse dans la pompe et dans...

Page 6: ...a Difusor El difusor de la pistola dispersa el chorro pulverizado y reduce el riesgo de inyecci n cuando no est instalada la boquilla Revisar con regularidad el funci namiento del difusor Seguir el pr...

Page 7: ...xcede los l mites recomendados reemplazarla de inmediato Es muy arriesgado tener una manguera sin puest a tierra o con la puest a tierra en malas condici nes Leer tambi n la informaci n sobre RIESGO D...

Page 8: ...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...

Page 9: ...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...

Page 10: ...ent 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 pre...

Page 11: ...ngage the gun safety latch CAUTION Do not run the sprayer dry for more than 30 sec onds to avoid damaging the pump packings 7 To prime the pump hold a metal part of the gun firmly against a grounded m...

Page 12: ...AC 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 latc...

Page 13: ...he ADD and FULL marks on the dipstick See page 9 8 Change the hydraulic fluid every 2000 hours of op eration or 12 months whichever comes first Also clean the hydraulic pump intake filter and replace...

Page 14: ...r damaged Replace See page 16 Excessive surge at spray gun Outlet filter is dirty or plugged Clean See manual 307 273 Tip is plugged Use Reverse A Clean feature to clear or relieve pressure and remove...

Page 15: ...ee tie rod nuts 13 and pull the dis placement pump 84 down off 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 R...

Page 16: ...t 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...

Page 17: ...ent 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...

Page 18: ...e 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 th...

Page 19: ...eals 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 pum...

Page 20: ...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 1 52 57 29 19 131 84 143 142 144 72 148 141 147 LABEL LABEL Ref 56 Ref 41 Ref 10...

Page 21: ...3 1 12 101 545 PIN cotter 2 13 101 566 LOCKNUT hex nylon insert 3 8 16 3 14 101 831 PIN spring 2 15 101 946 PIN cotter 1 16 102 039 PIN spring 2 17 102 063 LOCKWASHER ext tooth no 8 4 18 102 276 TERMI...

Page 22: ...E suction 1 82 208 914 GUARD fan top 1 83 208 915 GUARD fan bottom 1 84 DISPLACEMENT PUMP See parts on page 21 1 208 916 For Models 231 004 226 433 only 1 221 072 For Model 226 432 only 1 104 208 918...

Page 23: ...Sprayer 226 432 REF NO PART NO DESCRIPTION QTY 85 100 065 BALL chrome alloy 5 16 dia 1 86 100 084 BALL chrome alloy 1 2 dia 1 88 164 477 V PACKING leather 4 89 164 480 GASKET 1 90 178 902 SLEEVE housi...

Page 24: ...ecomes clogged Ball valve no 214 711 is recommended for both pur poses We also recommend using elbow no 100 840 to direct the outlet flow from the drain valve in a safe direction to a pail In the drai...

Page 25: ...ee 1 800 328 0211 207 428 HYDRAULIC FLUID Graco approved 1 gallon 3 8 liter GRACO THROAT SEAL LIQUID TSL Non evaporating fluid for the wet cup 206 995 1 quart 0 95 liter 206 996 1 gallon 3 8 liter 102...

Page 26: ...NOTES...

Page 27: ...NOTES...

Page 28: ...wear caused by the incompatibility with Graco equipment of structures accessories equipment or materials not supplied by Graco or the improper design manufacture installation operation or maintenance...

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