User manual EFD 736HPA INSTALLATION GUIDE

[. . . ] Thread the fluid inlet fitting into the fluid inlet hole. Note: The fluid inlet fitting and hose must be obtained from the high pressure pump supplier. Ensure that the hose and fitting are rated for the maximum operating pressure of the pump system. VALVEMATE 7000 Run Setup Purge Program Fast Slow Time Set Pressure Time STOP 1 3. [. . . ] Refer to valve controller operating manual. 5 How the Valve Operates When air pressure at 70 psi (4. 8 bar) is applied, the piston shifts the spool to the open position, allowing fluid to flow. At the end of the cycle, spring force on the piston shifts the spool to the closed position, stopping fluid flow. During the closing action, the 736HPA provides snuff-back of fluid for clean cutoff. The stroke adjustment can be used to regulate snuff-back to an amount appropriate for the fluid being dispensed. Stroke adjustment can also be used to reduce fluid surge when the valve opens to ensure consistent bead widths and dot profiles. The stroke is adjusted by moving the stroke limit stop: 1. To access the stop, first remove the air input hose from the push-in air coupling by pushing down on the release ring while pulling up on the tubing. Insert the 1/8" Allen wrench through the air coupling and engage the stroke limit stop. Adjust the stop toward or away from the piston to vary the stroke. To decrease the amount of opening surge and closing snuff-back, extend the limit stop by turning the wrench clockwise. To increase the amount of surge and snuff-back, retract the limit stop by turning the wrench counterclockwise. Note: Adjusting the stroke does not affect the flow rate. Install the air input hose by pushing the hose into the coupling. Note: For striping applications, fluid surge can be reduced further by lowering the valve operating air pressure down to, but not below, 40 psi (2. 7 bar). When dispensing very thick fluids at high cycle rates, the double-acting feature ensures rapid closure. A double-actuating air input is provided on the side of the air cylinder to allow double-acting operation using air pressure to both open and close the valve. [. . . ] The EFD Ultra TT Series positioning systems incorporate dispensing control into the main system. Contact the EFD Dispense Valve Systems Group for details. A NORDSON COMPANY For EFD sales and service in over 30 countries, contact EFD or go to www. efd-inc. com/contact EFD, Inc. 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. [. . . ]