Graco 312794E Installation, General Information, Prepare the Operator Prepare the Site, Grounding

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Installation

Installation

General Information

Reference numbers and letters in parentheses in the text refer to the callouts in the figures and the parts drawing.

Always use Genuine Graco Parts and Accessories, available from your Graco distributor. If you supply your own accessories, be sure they are adequately sized and pressure-rated for your system.

Prepare the Operator

All persons who operate the equipment must be trained in the operation of all system components as well as the proper handling of all fluids. All operators must thor- oughly read all instruction manuals, tags, and labels before operating the equipment.

Prepare the Site

Ensure that you have an adequate compressed air supply.

Bring a compressed air supply line from the air com- pressor to the pump location. Be sure all air hoses are properly sized and pressure-rated for your system. Use only electrically conductive hoses.

Keep the site clear of any obstacles or debris that could interfere with the operator's movement.

Have a grounded, metal pail available for use when flushing the system.

Grounding

The equipment must be grounded. Grounding reduces the risk of static and electric shock by providing an escape wire for the electrical current due to static build up or in the event of a short circuit.

Pump: See FIG. 2. Verify that the ground screw (GS) is attached and tightened securely to the air motor. Con- nect the other end of the ground wire (U) to a true earth ground.

U

GS

ti12914a

FIG. 2. Ground screw and wire

Air and fluid hoses: Static electricity may build up when fluids flow through pumps, hoses, and sprayers. At least one hose must be electrically conductive, with a maximum of 500 ft. (150 m) combined hose length to ensure grounding continuity. Check electrical resistance of hose. If total resistance to ground exceeds 25 meg- ohms, replace hose immediately.

Air compressor: follow manufacturer’s recommenda- tions.

Spray gun / Dispense valve: Ground the spray gun through connection to a Graco-approved grounded fluid hose.

Fluid supply container: follow local code.

Object being sprayed: follow local code.

Solvent pails used when flushing: follow local code. Use only conductive metal pails, placed on a grounded surface. Do not place the pail on a nonconductive sur- face, such as paper or cardboard, which interrupts grounding continuity.

To maintain grounding continuity when flushing or relieving pressure: hold metal part of the spray gun/dispense valve firmly to the side of a grounded metal pail, then trigger the gun/valve.

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312794E

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Contents Merkur Pump Assembly Ll 2 GContents Data Monitoring/Exhaust Pump Part Number MatrixWet cup Ratio Pump Models Fire and Explosion Hazard Related Manuals Manual DescriptionComponent Identification Component Identification KeyInstallation General InformationPrepare the Operator Prepare the Site GroundingAir and Fluid Hoses AccessoriesMount the Pump Typical Installation G15 Spray Gun Shown with Supply HosePressure Relief Procedure Flush Before Using EquipmentOperation Wet CupPrime and Adjust the Pump Shutdown and Care of the PumpMaintenance Preventive Maintenance ScheduleFollow Pressure Relief Procedure, Tighten Threaded ConnectionsTroubleshooting Problem Cause SolutionDisconnect the Displacement Pump RepairLW050A-LW150A Reconnect the Displacement PumpDisplacement Pump Torque LW025A Disconnect the Air Motor Reconnect the Air MotorMotor Torque All Other SizesPump Parts Description Parts That Vary by ModelQty For displacement pump repair kits, see manual Repair KitsModel W15Axx Performance ChartsModel W10xxx Flow Model W15BxxModel W15Fxx Model W18xxx Model W23xxxModel W24xxx Model W28xxxBar Model W30AxxModel W30Cxx Model W36xxx Model W45xxxModel W48xxx Ratio, 75 cc/cyclePump Dimensions Pump Model WeightWall Bracket Mounting Dimensions Technical DataGraco Standard Warranty Graco Information