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INSTRUCTIONS-PARTS LIST
50 HZ, 220/110 V AC
EM 490
PAINT SPRAYER
192 bar (2750 psi) MAXIMUM WORKING PRESSURE
Model 220-834, Series D
Includes hoses,"Contractor" gun,
RACI IV DripLess
Tip Guard,
517 size SwitchTip
CONTENTS
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NOTE: This is an example of the DANGER label on your sprayer.
This label is available in other languages, free of charge.
See page 27 to order.
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.
READ AND UNDERSTAND ALL LABELS AND INSTRUCTION MANUALS BEFORE USE
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440-1441
This manual contains IMPORTANT
WARNINGS and INFORMATION
READ AND RETAIN FOR REFERENCE
2
4
4
4
6
8
9
10
11
13
22
27
28
28
28
FIRE AND
EXPLOSION HAZARD
COPYRIGHT 1987, GRACO INC.
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.
307-823
Rev D
Supersedes Rev B
and PCN C
0113
SKIN INJECTION
HAZARD

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Table of Contents
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Summary of Contents for Graco EM 490

  • Page 1: Table Of Contents

    Failure to follow this warning can result in death or serious injury. Failure to follow this warning can result in amputation or serious injury. READ AND UNDERSTAND ALL LABELS AND INSTRUCTION MANUALS BEFORE USE GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441 COPYRIGHT 1987, GRACO INC.
  • Page 2: Warnings

    WARNINGS HIGH PRESSURE SPRAY CAN CAUSE SERIOUS INJURY. FOR PROFESSIONAL USE ONLY. OBSERVE ALL WARNINGS. Read and understand all instruction manuals before operating the equipment. FLUID INJECTION HAZARD General Safety Safety Latch This equipment generates very high fluid pressure. Spray from Whenever you stop spraying, even for a moment, always set the the gun, leaks or ruptured components can inject fluid through gun safety latch in the closed or “safe”...
  • Page 3 DO ING PRESSURE. Be sure all spray equipment and accessories NOT expose Graco hoses to temperatures above 82 C (180 used are rated to withstand this pressure. DO NOT exceed the F) or below –40 C (–40 F).
  • Page 4: Terms

    CAUTION: Alerts user to avoid or correct conditions that could cause damage to or destruction of equipment. WARNING: Alerts user to avoid or correct conditions that could cause bodily injury. EM 490 COMPONENTS FRAME ELECTRIC MOTOR ON/OFF SWITCH POWER SUPPLY CORD...
  • Page 5 SETUP 2. Fill the packing nut/wet–cup 1/3 full with Graco VOLTAGE CHANGE BOX LOCATED ON THIS SIDE Throat Seal Liquid (TSL), supplied. See Fig 2. OF MOTOR 3. Check the electrical service. a. The motor is factory wired for 220 V. To rewire the...
  • Page 6: Operation

    OPERATION 5. Disengage the gun safety latch. See Fig 7. WARNING To reduce the risk of serious bodily injury, including 6. To prime the pump , hold a metal part of the gun fluid injection, splashing fluid or solvent in the eyes firmly against and aimed into a grounded metal pail.
  • Page 7 OPERATION Cleaning a Clogged Tip 8. Install the spray tip and tip guard. If the system is pressurized, follow the PRESSURE RELIEF PRO- WARNING CEDURE on page 2. Be sure the gun safety latch is To reduce the risk of serious bodily injury from fluid engaged.
  • Page 8: Shutdown & Care

    SHUTDOWN AND CARE 1. Check the packing nut/wet–cup daily . Relieve 3. Lubricate the bearing housing after every 100 pressure. Keep the wet–cup 1/3 full of TSL to help hours of operation. Remove the drive housing cover. prevent fluid buildup on the piston rod and premature Fill the bearing housing cavity with SAE non–deter- wear of packings.
  • Page 9: Flushing Guidelines

    FLUSHING GUIDELINES When To Flush 3. Changing from water-base to oil-base paint. Flush with warm, soapy water , and then flush with CAUTION mineral spirits. NEVER leave water in the sprayer if there is the 4. Changing from oil-base to water-base paint. slightest chance it could freeze.
  • Page 10: Application Methods

    APPLICATION METHODS Hold the gun perpendicular to the surface. Keep the gun The best way to control the rate of coverage is with the gun tip size. A small tip orifice applies less paint. A larger at an even 300–356 mm (12 to 14 in.) from the surface you are spraying.
  • Page 11: Troubleshooting Guide

    TROUBLESHOOTING GUIDE WARNING Pressure Relief Procedure Disengage the gun safety latch. Hold a metal part To reduce the risk of serious bodily injury , including of the gun firmly to the side of a grounded metal pail, and trigger the gun. fluid injection, splashing in the eyes or on the skin, or Engage the gun safety latch.
  • Page 12 PROBLEM CAUSE SOLUTION Paint leaks into wet–cup Throat packings are worn or damaged. Replace the packings. See page 19. Excessive surging from spray gun Spray tip is plugged. Disassemble and clean. Spray tip too big or worn. Change the spray tip. Paint too viscous.
  • Page 13: Repair

    CONNECTING ROD and BEARING WARNING To reduce the risk of serious bodily injury, including fluid injection; splashing in the eyes; injury from moving parts or electric shock, always follow the Pressure Relief Procedure W arning on page 11 before continuing. LUBRICATE: See NOTE at lower left...
  • Page 14 DRIVE ASSEMBLY WARNING Remove the screws (55c) from the front of the motor housing (B). Pull the motor housing off the motor. To reduce the risk of serious bodily injury, including fluid injection; splashing in the eyes; injury from moving parts or electric shock, always follow the Clean and inspect the gear (37).
  • Page 15 REMOVING and REPLACING ELECTRIC MOTOR WARNING Disconnect the green/yellow motor lead from the grounding screw (302), the brown motor lead from the To reduce the risk of serious bodily injury, including microswitch and the blue lead from the on/off switch. fluid injection;...
  • Page 16 START SWITCH WARNING To reduce the risk of serious bodily injury, including fluid injection; splashing in the eyes; injury from moving parts or electric shock, always follow the Pressure Relief Procedure W arning on page 11 VOLTAGE CHANGE before continuing. BOX LOCATED ON THIS SIDE OF MOTOR...
  • Page 17 PRESSURE CONTROL WARNING VOLTAGE CHANGE BOX LOCATED ON To reduce the risk of serious bodily injury, including THIS SIDE OF MOTOR fluid injection; splashing in the eyes; injury from moving parts or electric shock, always follow the Pressure Relief Procedure W arning on page 11 before continuing.
  • Page 18 NOTES...
  • Page 19 If the sleeve cannot be removed easily 204* using the tool, return the sleeve and cylinder to your 202* TORQUE Graco distributor for removal. 96 N.M (70 FT–LB) TORQUE TO Screw the large nut (A) of the tool into the top of the 64 N.M...
  • Page 20 DISPLACEMENT PUMP Reassembly Notes A. Packing Repair Kit 222–587 is available. Parts in- cluded in the kit are marked with an asterisk (*) in the TORQUE NUT text and drawings. AGAINST ROD TO 25 N.m (19 FT-LB) B. Clean all parts thoroughly. Check the outside of the piston rod (224) and the inside of the sleeve (218) for scoring or scratches, which prevent the packings from sealing properly.
  • Page 21 DISPLACEMENT PUMP REPAIR *209 213* POLY *207 LIPS MUST FACE DOWN LEATHER LIPS MUST FACE DOWN *208 *202 210* 212* *206 POLY LEATHER LIPS MUST FACE UP LIPS MUST FACE UP 215* *203 LIPS OF U–CUP SEAL 214* MUST FACE DOWN *202 TORQUE TO: 64 N.m...
  • Page 22: Parts Lists And Drawings

    PARTS LIST Model 220–834, Series D Includes items 1 to 135, 200 to 202, as listed below PART NO. DESCRIPTION PART NO. DESCRIPTION 065–099 CONDUIT, electrical 92 mm 176–762 NUT, hex, 1 1/2–18 100–188 NUT, heavy, hex, 5/16–18 181–048 HANGER, pail 100–214 LOCKWASHER, spring, 5/16”...
  • Page 23 PARTS DRAWING – SPRAYER Model 220–834, Series D located under this cover DANGER LABEL located in voltage change box 200b COVER LABEL, 200a INSIDE COVER Ref 52 Ref 102 0130...
  • Page 24 PARTS LIST & DRAWING – PRESSURE CONTROL Model 222–227 PART NO. DESCRIPTION PART NO. DESCRIPTION 222–196 BARE PRESSURE CONTROL 218–372 CONDUCTOR, with terminal Includes replaceable item 301a 215–861 CONDUCTOR, with terminals 301a 109–191 .SWITCH, on/off 162–453 NIPPLE, 1/4 npsm x 1/4 npt 100–035 SCREW, mach, pan head, 8–32 x 107–436...
  • Page 25 REF 1 REF 25 REF 40 Ç Ç Ç Ç Ç Ç Ç Ç Ç Ç Ç Ç Ç 318,319,320 TERMINAL STRIP MOUNTING HARDWARE REF 17 0087 BROWN (from motor) 301a BROWN (to front post) BLACK (from terminal to rear post) REF 309 WHITE (from terminal strip to rear post)
  • Page 26 PARTS LIST & DRAWING Model 222–584, Series A Sleeved Displacement Pump Includes items 201 to 224 NO. PART NO. DESCRIPTION 105–444* BALL PTFE 108–954* PACKING, o–ring, 105–522* SEAL, u–cup, polyurethane 105–445* BALL, sst 180–656 PLUG 1 176–749* V–PACKING, leather 176–755* V–PACKING, leather 176–754* GLAND, male...
  • Page 27: Accessories

    THROAT SEAL LIQUID shows the best placement of these labels for good Non–evaporating liquid for the wet–cup. Helps prevent visibility. Order the labels directly from your Graco buildup of paint on the rod and throat packings, to reduce distributor, free of charge.
  • Page 28: Technical Data

    Graco distributor to the original purchaser for use. As purchaser’s sole remedy for breach of this warranty, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment proven defective. This war- ranty applies only when the equipment is installed, operated and maintained in accordance with Graco’s written recommendations.

This manual is also suitable for:

220-834

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