User manual EFD 752V-HL

[. . . ] The 752V-HL hand-operated dispense gun is a rugged industrial lever-actuated fluid dispensing valve. The valve incorporates a quick change fluid body for fast and easy maintenance. The fluid inlet fitting for 1/4" OD feed tubing and an assortment of dispensing tips are included. Electronic pdf files of EFD® manuals are also available at www. efdinc. com/manuals. html User's Guide 752V-HL Dispense Gun ® 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 The World Leader in Fluid Dispensing Technology Typical system setup #2000F755 Five micron filter regulator for clean, dry filtered factory air. [. . . ] Install an appropriate size dispensing tip to the outlet tip adapter. Use large tips for high viscosity materials and small tips for low viscosity. Press the hand lever to begin fluid flow. To achieve desired flow, change the size of the dispensing tip or adjust the reservoir fluid pressure. Service Normal cleaning is accomplished by purging with appropriate solvent. Some material, however, may cause a buildup on the fluid body and diaphragm, which will require a periodic, thorough cleaning by removing the fluid body. To remove the fluid body: Remove the two retainer screws. It is not always necessary to remove the fittings from the fluid body for cleaning. If the fittings must be removed, be careful--solidified material on the fitting thread could cause the fluid body thread to strip out. NOTE: Avoid using sharp probes for cleaning. Any scratches or nicks on the diaphragm or the sealing side of the fluid body may cause the valve to leak and require replacement of both the diaphragm and fluid body. To reinstall the fluid body: Align fluid body holes with diaphragm and air cylinder body holes, and reinsert retainer screws. Tighten 1/2 turn after screws contact the fluid body. If diaphragm holes do not line up with the tapped holes in the air cylinder body, follow Step #4 below. Engage the screwdriver into the piston shaft and hold. To unscrew diaphragm, turn counterclockwise. 2. 3. 4. 5. Maintenance Tools: 7/64" hex wrench (part #7509) 1/8" flat tip screwdriver (part #7508) snap ring pliers (customer supplied) 6" adjustable wrench (customer supplied) Air cylinder cap #7529 Thrust washer #7809 Piston return spring #7802 Tab washer #7533 To change the diaphragm: 1. Place the 1/8" flat tip screwdriver (supplied) through the center hole in the air cylinder cap. [. . . ] Tighten retainer screws 1/2 turn after contacting the fluid body. Proper torque is 7 inch pounds. Snap ring #7526 Piston and shaft assembly #7523 Bail hanger #7412 Air cylinder and lever assembly #7527HL Diaphragm #7510 Fluid inlet fitting #7543BP Fluid body #7521F (2) Retainer screws #7524 Tip adapter #7536NP CAUTION: Check the reservoir pressure gauge prior to performing any maintenance to assure that pressure is zero (0). To confirm this on EFD tanks: slide the shutoff valve on the air hose away from the tank, and open the pressure relief valve on the tank. [. . . ]