Hitachi EM 490 System Pressure, Fluid and Solvent Compatibility, Hose Grounding Continuity

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MOVING PARTS HAZARD

Moving parts can pinch or amputate your fingers or other body parts. KEEP CLEAR of moving parts when starting or operating the sprayer. Follow the Pressure Relief Procedure on page 2 before checking or servicing any part of the sprayer, to prevent it from starting accidentally.

EQUIPMENT MISUSE HAZARD

General Safety

Any misuse of the spray equipment or accessories, such as overpressurizing, modifying parts, using incompatible chemi- cals and fluids, or using worn or damaged parts, can cause them to rupture and result in fluid injection, splashing in the eyes or on the skin, or other serious bodily injury, or fire, explosion or 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 respirator as recommended by the fluid and solvent manufacturer.

System Pressure

This sprayer can develop 2750 psi (190 bar) MAXIMUM WORK- ING PRESSURE. Be sure all spray equipment and accessories used are rated to withstand the this pressure. DO NOT exceed the maximum working pressure of any component or accessory used in the system.

Fluid and Solvent Compatibility

All chemicals used in the sprayer must be chemically compatible with the wetted parts shown in the TECHNICAL DATA on page 31. Consult your chemical supplier to ensure compatibility.

Do not use 1,1,1-trichloroethane, methylene chloride, other ha- logenated hydrocarbon solvents or fluids containing such sol- vents in this equipment, which contains aluminum and/or zinc parts. Such use could result in a serious chemical reaction, with the possibility of explosion, which could cause death, serious bodily injury and/or substantial property damage.

HOSE SAFETY

High pressure fluid in the hoses can be very dangerous. If the hose develops a leak, split or rupture due to any kind of wear, damage or misuse, the high pressure spray emitted from it can cause a fluid injection injury or other serious bodily injury or prop- erty damage.

ALL FLUID HOSES MUST HAVE STRAIN RELIEFS ON BOTH ENDS! The strain reliefs 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 entire hose for cuts, leaks, abrasion, bulging cover, or damage or movement of the hose couplings. If any of these conditions exist, replace the hose immediately. DO NOT try to recouple high pres- sure hose or mend it with tape or any other device. A repaired 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 hoses to tempera- tures 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, con- tact the hose supplier or manufacturer for the maximum resis- tance 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 ungrounded or poorly grounded hose can make your system hazardous. Also read FIRE OR EXPLOSION HAZARD, below.

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 haz- ardous. Sparking may also occur when plugging in or unplugging 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 in- doors or outdoors, and can cause a fire or explosion and serious bodily injury and property damage. Always plug the sprayer into an outlet at least 20 feet (6 m) away from the sprayer and the spray area. Do not plug in or unplug any power supply cords in the spray area when there is any chance of igniting fumes still in the air.

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 the power supply cord, or extension cord ± each equipped with an undamaged, three±prong plug, into a prop- erly grounded outlet. Do not use an adapter. All extension cords must have three wires and be rated for 15 Amps.

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 Con- struction Standards, Part 1926 ± should be consulted.

2. Fluid hoses: use only grounded hoses with a maximum f 500 ft (150 m) combined hose length to ensure grounding continu- ity. See Hose Grounding Continuity on page 3.

3.Spray gun: obtain grounding through connection to a properly 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 card- board, 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 splash- ing by following the flushing procedure given on page 12 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.

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Contents Model 231±050 Model 231±002, Series CModel 231±490 Model 220±679, Series CMedical Alert±±Airless Spray Wounds General SafetySpray Gun Safety Devices Spray Tip SafetyHose Grounding Continuity Flushing SafetySystem Pressure Fluid and Solvent CompatibilityConsignes de sécurité concernant lajutage du pulvérisateur Consignes générales de sécuritéSoins médicaux Dispositifs de sécurité du pistoletMise à la terre ou à la masse PressionCompatibilité chimique des corps Continuité de la mise à la terre des tuyauxAparatos de seguridad de la pistola pulverizadora EL Rociado a Alta Presion Puede Causar Graves LesionesSeguridad general Tratamiento médicoSeguridad durante el lavado Presión del sistemaCompatibilidad de fluido Puesta a tierraConnect the hose and gun See Fig SetupOperation Pressure Relief ProcedureInstall the spray tip and tip guard Adjusting the spray pattern Refer to FigPrime the sprayer with paint Shutdown and Care Cleaning a Clogged TipStartup after storage When To FlushHow To Flush Flushing GuidelinesCorrect Wrong Application MethodsTroubleshooting Guide Pressure Relief ProcedureProblem Cause Solution Removing the Pump. See Fig Displacement PumpReassembly Notes Reinstalling the Pump. See FigReassembly Procedure Replacing the Connecting ROD and Bearing Replacing the Drive Assembly Capacitor Replacing the Electric Motor & CapacitorReplacing the Pressure Control & Circuit Board Pressure Control Adjustment Service Tools NeededFollow the Pressure Relief Procedure Warning on If the pressure is not 2350 psi 164 bar Circuit Board Applications Parts Drawing ± Pressure ControlNO. Part no Description QTY Displacement Pump Parts Drawing and ListModel 231±490, Complete Sprayer Parts List ± Sprayer with Upright CartParts Drawing Model 231±002, Series C, Basic SprayerParts Drawing ± Sprayer with Upright Cart Parts List ± Sprayer with Loboy Cart Model 220±679, Series C, Basic SprayerModel 231±050, Complete Sprayer Parts Drawing ± Sprayer with Loboy Cart Service Information AccessoriesTo you 1±800±328±0211 Toll Free Technical DataDimensions Important Phone NumbersGraco INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440±1441 Graco Warranty and Disclaimers