User manual EFD 725 INSTALLATION GUIDE

[. . . ] 725D Series Piston 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 Control air hose Introduction The 725D Series is simple to use and will operate many millions of cycles without maintenance. The unique design of the 725D Series valve provides a clean fluid cutoff with pullback for precise fluid application at high cycle rates. [. . . ] Choose a dispensing tip or nozzle-- small tips (18-20 gauge) for low viscosity fluid and larger tip or nozzle for higher viscosities. 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. Place a cup under the dispensing tip or nozzle and actuate the valve until fluid lines, valve and dispensing tip are free of air. Set desired flow rate by adjusting fluid reservoir pressure, valve stroke setting or changing dispensing tip or nozzle. Set desired deposit size by adjusting valve open time. Refer to valve controller operating manual. Steady Test Clear Time Set Fast Slow POWER RUN SETUP CYCLE 3. r ut Air Output 4 3 4. Exhaust 5. 5 7 STOP Pressure Time ® A NORDSON COMPANY Run Setup Purge Program Fast Slow Time Set 6. 6 7. 8. 8 9. * 9 Open Close 10. * 725DA and 725DA-SS only 10 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 down, causing the diaphragm seal to deflect and the sealing head to open and permit fluid flow. When the input air pressure exhausts, the spring retracts the piston and the sealing head closes, stopping the fluid flow and pulling back a slight amount of fluid. stripes lines, input air pressure * Forloweredandeliminate opening surge. can be to * 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 and the dispensing tip size. Flow rate is a function of reservoir pressure, stroke adjustment setting, tip size and fluid viscosity. The primary control of deposit size is the valve open time. open closed ValveMate Concept The ValveMate 7000 provides easy adjustment of valve output for maximum end user convenience and efficiency. Valve open time is the primary control of deposit size. [. . . ] East Providence, RI USA 800-556-3484; +1-401-434-1680 (outside the USA) info@efd-inc. com www. efd-inc. com 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 725D-INSTALL-01 v062606 [. . . ]