User manual EFD 800

[. . . ] Operating Guide Model 800 Dispenser ® US: 800-556-3484 A NORDSON COMPANY In the UK: 0800 585733 In Mexico: 001-800-556-3484 Introduction Model 800 fluid dispenser provides years of trouble-free, productive service. This Operating Guide will help you maximize the usefulness of your new dispenser. Please spend a few minutes to become familiar with the controls and features of your new dispenser. Follow our recommended testing procedures. [. . . ] (Repeat this whenever you change to a new tip. ) Use the Dot Test Sheet supplied, and press the foot pedal to make a dot or stripe. Make several more deposits, carefully applying the tip at the angle shown and removing the tip as shown. Remember - always bring the tip in contact with the work surface at the illustrated angle. After the tip is in position, press the foot pedal. A continuous flow of material will occur as long as the foot pedal is pressed. Continue to experiment by replacing the green tip with the blue (22 gage) tapered tip included in the Dot Test Kit. Note the effects of air pressure and tip size on the deposit. Correct angle for making deposits. Adjusting the Deposit Amount The deposit size is determined by the tip diameter, the output air pressure setting and the length of time the foot pedal is pressed. To increase the deposit size, slightly increase output air pressure, or increase tip size, or both. To decrease the deposit amount, use a smaller tip size, or lower the air pressure. Remember - always bring the tip in contact with the work surface at the illustrated angle. After the tip is in position, press the foot pedal. Release pedal and remove tip by lifting straight up. Using the Vacuum Control The vacuum control allows low viscosity fluids, even water, to be consistently dispensed without dripping between cycles. The vacuum exerts a negative pressure on the fluid in the barrel and prevents dripping. For these tests, you will use the test barrel with the clear fluid. While holding the barrel upright in one hand, remove the orange end cap and insert the white SmoothFlowTM piston. Carefully press the piston down until it contacts the fluid. Be sure to push it far enough to remove all air, but not into the fluid, since this will force the fluid up along the sides of the piston. Remove orange end cap 5. If a drop begins to form at the end of the tip, slowly turn the vacuum control knob counterclockwise to stop the drop from growing. Wipe the tip and slowly adjust vacuum as necessary. Take the barrel and place the tip on the Dot Test Sheet. You control the fluid flow Regardless of the viscosity of the fluid you use, you should try using the SmoothFlowTM piston (see pages 10-11). If you choose not to use the piston, please read the following points. rate by increasing the air pressure output (higher flow) or decreasing the air pressure output. Three things to remember If you do not use the piston when dispensing thin fluids: Insert SmoothFlowTM piston Remove tip cap Open Do not tip the barrel upside down or lay flat. [. . . ] Depending on the type of work you are doing, it may be easier to bring the work to the barrel. Mount the barrel on a stand such as the EFD #7300A. To ensure smooth fluid flow and to make consistent deposits, always have the tip at about a 45° angle to the work surface. #7300A Barrel Stand #DS1200 DispenStandTM ULTRA SystemTM Dispensing Components For complete selection and technical details, please refer to EFD Catalog and price list. Barrel adapter assemblies Molded one-piece, yellow, SnapLokTM adapter head with Buna N O-ring, flexible 5/32" O. D. [. . . ]