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manual abstract
253704, Series B 3:1 Ratio Air-operated Double Diaphragm Pump, with BSPP Fittings Part No. 253705, Series B 3:1 Ratio Air-operated Double Diaphragm Pump, with NPT Fittings 100 psi (0.7 MPa, 7 bar) Maximum Air Input Pressure 300 psi (2.1 MPa, 21 bar) Maximum Fluid Working Pressure Important Safety Instructions Read all warnings and instructions in this manual. Save these instructions. TI2125A Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441 Copyright 2006, Graco Inc. is registered to I.S. EN ISO 9001 II 2 G Contents Warning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 General Information . . . . . . . . . . . . . . . . . . . . . .5 Tightening Threaded Fasteners Before First Use 5 Mounting the Pump . . . . . . . . . . . . . . . . . . . . . . . 6 Air Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Fluid Suction Line . . . . . . . . . . . . . . . . . . . . . . . .7 Fluid Outlet Line . . . . . . . . . . . . . . . . . . . . . . . . .7 Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 PressureRelief Procedure . . . . . . . . . . . . . . . . 10 Flushing the Pump Before First Use . . . . . . . . . 10 Startingand Adjusting the Pump . . . . . . . . . . . 10 Pump Shutdown . . . . . . . . . . . . . . . . . . . . . . . . 10 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Flushingand Storage . . . . . . . . . . . . . . . . . . . . 11 Tightening Threaded Connections . . . . . . . . . . 11 Preventive Maintenance Schedule . . . . . . . . . . 11 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . .12 Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 Prepare the Pump for Repair . . . . . . . . . . . . . . . 13 General Repair Notes . . . . . . . . . . . . . . . . . . . .13 Fault Indications . . . . . . . . . . . . . . . . . . . . . . . .13 Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Replace the Diaphragms . . . . . . . . . . . . . . . . . .14 Repair the Air Valve . . . . . . . . . . . . . . . . . . . . . .16 Repair the Shaft and Bearings . . . . . . . . . . . . .18 Replace the Ball Check Valves . . . . . . . . . . . . .20 Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . .24 Performance Chart . . . . . . . . . . . . . . . . . . . . . . . . .25 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26 GracoStandardWarranty . . . . . . . . . . . . . . . . . . .28 GracoInformation . . . . . . . . . . . . . . . . . . . . . . . . .28 311688D Warnings Warnings The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclamation point symbol alerts you to a general warning and the hazard symbol refers to procedure-specific risk. Refer back to these warnings. Additional, product-specific warnings may be found throughout the body of this manual where applicable. Warning EQUIPMENT MISUSE HAZARD Equipment misuse can cause the equipment to rupture or malfunction and result in serious injury. • This equipment is for professional use only. • Read all instruction manuals, tags, and labels before operating the equipment. • Use the equipment only for its intended purpose. If you are not sure, call your Graco distributor. • Do not alter or modify this equipment. Use only genuine Graco parts and accessories. • Check equipment daily. Repair or replace worn or damaged parts immediately. • Do not exceed the maximum working pressure of the lowest rated system component. Refer to the Technical Data on page 24 for the maximum working pressure of this equipment. • Use fluids and solvents which are compatible with the equipment wetted parts. Refer to the Technical Data section of all equipment manuals. Read the fluid and solvent manufacturer's warnings. • Do not use hoses to pull equipment. • Route hoses away from traffic areas, sharp edges, moving parts, and hot surfaces. Do not expose Graco hoses to temperatures above 82°C (180°F) or below -40°C (-40°F). • Wear hearing protection when operating this equipment. • Comply with all applicable local, state, and national fire, electrical, and safety regulations. PRESSURIZED EQUIPMENT HAZARD Spray from the gun, hose leaks, or ruptured components can splash fluid in the eyes or on the skin and cause serious injury. • Do not point the gun at anyone or at any parts of the body. • Do not stop or deflect leaks with your hand, body, glove, or rag. • Follow the Pressure Relief Procedure on page 10 whenever you are instructed to relieve pressure; stop spraying; clean, check, or repair the equipment; and install or clean the spray nozzle. • Tighten all fluid connection...