User manual EFD 900

[. . . ] Operating Guide 900 Series Dispenser 900 · 900-15 · 900-CA ® US: 800-556-3484 US: 800-556-3484 585733 · Mexico: In Mexico: 001-800-556-3484 · UK: 0800 In the UK: 0800 585733 001-800-556-3484 A NORDSON COMPANY Introduction The 900 Series fluid dispensers provide 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. [. . . ] Dot Test with Blue Tapered Tip These tests show the effect of using a smaller diameter tip. Replace the green tip with the blue (22 gage) tapered tip. Now, turn on the timer bypass switch and press the foot pedal to fill the tip. Then, turn off the timer bypass switch (yellow light out) and press the foot pedal. To make stripes, press the timer bypass switch (yellow light on). With the tip in contact with the test sheet, press and hold down the foot pedal while making a bead or stripe. Green Tip Settings Test Pressure Time Dot Size A B C D E F 30 psi 20 psi 10 psi 20 psi 15 psi 10 psi #7 #7 #7 #3 #3 #3 Blue Tip Settings Test Pressure Time Dot Size G H I J K 30 psi 20 psi 20 psi 15 psi 10 psi #6 #6 #3 #3 #3 Programmable Timer Each 900 series dispenser has a digital timer with programmable time ranges. The DIP switch that controls the timer has been set at the factory for a time range of 0. 01 to 1. 0 second, with the initiation set to MOMENTARY contact. If a longer time range is required, or foot pedal operation needs to be changed from momentary to maintained, choose the appropriate dip switch setting in the chart below. DIP Switch Settings 0. 01-1. 0 second O N 1234 0. 1-10 seconds O N 1234 0. 2-20 seconds O N 1234 0. 3-31 seconds O N 1234 (4) ON = Maintained pedal contact (hold foot pedal down during time cycle) (4) OFF = Momentary pedal contact (press foot pedal once) Caution: Always disconnect the power cord before removing the cover. 9 How to Use the Vacuum Control Making Timed Deposits of Watery-thin Fluids (Models 900, 900-15, 900-CA) 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 supplied with the clear fluid. While holding the barrel upright in one hand, remove the orange end cap and insert the blue LV BarrierTM . Snap the safety clip tightly closed to prevent any dripping or bubbling. Remove the tip cap and attach the 25 gage (red) tip. Press the timer bypass switch (yellow light on). With the barrel pointing downward over a container, unsnap the safety clip. Then press the foot pedal to fill the tip. Press the timer bypass switch again (yellow light out). White SmoothFlowTM piston for most fluids, blue LV BarrierTM for watery-thin fluids and orange flat wall piston for thick, stringy fluids. See pages 12 - 13 for a complete description of how EFD pistons work and the benefits they can bring to your operation. 11 TM Advanced Dispensing System For Thick Fluids Air Pressure ON Air Pressure OFF If you dispense thick fluids, several problems may occur. First, the repetitive air cycles can bore tunnels through non-leveling fluids, causing spitting and inconsistent deposits. Second, thick fluids contain trapped air that leads to drooling and oozing. [. . . ] To ensure smooth fluid flow and to make consistent deposits, always have the tip at about a 45° angle to the work surface. #DS1200 DispenStandTM #7300A Barrel Stand 18 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. hose, male quick-connect and safety clip. size 3cc 5cc 10cc 30cc/55cc with 3-ft hose 1000Y5148 1000Y5149 1000Y5150 1000Y5152 with 6-ft hose 1000Y5148-6 1000Y5149-6 1000Y5150-6 1000Y5152-6 General purpose precision tips All EFD dispensing tips incorporate the unique SafetyLokTM color-coded polypropylene hubs. [. . . ]