User manual EFD 750 INSTALLATION GUIDE

[. . . ] 750 Series Dispense Valve INSTALLATION GUIDE Electronic pdf files of EFD® manuals are also available at www. efd-inc. com/manuals. html. ® A NORDSON COMPANY USA: 800-556-3484 or +1-401-434-1680 Europe: 0800 585733 or +44 (0) 1582 666334 Asia: +86 (21) 5854 2345 technical@efd-inc. com www. efd-inc. com Introduction The 750 Series fluid dispense valves are simple to use and will operate many millions of cycles without maintenance. The 750 Series incorporates a variety of compact, precise, adjustable diaphragm valves for dispensing low to medium viscosity fluids. These include the 750V, 750V-SS, 751V, 752V, 752V-SS, 752V-UH, 752V-UHSS, 752V-DVD and 752V-UHDVD models. [. . . ] Connect valve control air hose to ValveMateTM controller (or other pneumatic switch) used to control valve open time. Choose a dispensing tip--small tips (20 gauge) for low-viscosity fluids and larger (14 gauge) for higher viscosities. A NORDSON COMPANY 3. 4 r ut Air Output 3 4. Exhaust 5. Steady Test Clear Time Set Fast Slow POWER RUN SETUP CYCLE 5 STOP 7 ® Run Setup Purge Program Fast Slow Time Set Pressure Time 6. Fill reservoir by pouring fluid directly into tank liner or manufacturer's bottle placed inside reservoir. Set reservoir pressure to low for thin fluids and higher for thick fluids. Set the diaphragm stroke starting with no more than 1/2 turn open. 7. 9. 6 8 Open Close * Place a cup under the dispensing tip and actuate the valve until fluid lines, valve and dispensing tip are free of air. Set desired flow rate by adjusting fluid reservoir pressure or changing dispensing tip. 10. 9 10 * Do not overtighten the stroke adjustment knob or open it more than two full turns. If open more than two turns, pressurized liquid could force open the diaphragm seal, resulting in continuous liquid flow. 11 Set desired deposit size by adjusting valve open time. Refer to valve controller operating manual. How the Valve Operates Input air pressure at 70 psi (4. 8 bar) forces the internal piston to move. The piston rod pulls open the diaphragm seal, permitting fluid flow. When the input air pressure is relieved, the spring retracts the piston and the diaphragm closes. The amount of fluid dispensed will depend on the time the valve is open, the viscosity of the fluid, the air pressure in the fluid reservoir, the dispensing tip size and the diaphragm stroke. Flow rate is a function of reservoir pressure, tip size and fluid viscosity. To calibrate the valve, the "0" mark on the stroke reference ring should align with one of the two reference marks on the valve body. When the set-screw is tightened, the valve is calibrated. The primary control of deposit size is the valve open time. 752V and 752V-UH Fluid Flow 750V and 751V Fluid Flow closed open closed open ValveMate Concept The ValveMate 7000 provides easy adjustment of valve output for maximum end-user convenience and efficiency. [. . . ] The EFD Ultra TT Series positioning systems incorporate dispensing control into the main system. Contact the EFD Dispense Valve Systems Group for details. EFD International Inc. Dunstable, Bedfordshire, UK 0800 585733 or +44 (0) 1582 666334 Ireland 00800 8272 9444 europe@efd-inc. com www. efd-inc. com EFD, Inc. , Asia China: +86 (21) 5854 2345 china@efd-inc. com www. efd-inc. com/cn Singapore: +65 6896 9630 sin-mal@efd-inc. com ©2006 Nordson Corporation 750-INSTALL-01 v062606 [. . . ]