Nordson Ultimus II - Filling the Syringe Barrel (continued); Filling Watery Fluids and Vacuum Control

Filling Procedure for Watery Fluids and Vacuum Control
The Ultimus vacuum regulator allows low viscosity uids, even water, to be consistently dispensed without dripping
between cycles. A vacuum is exerted above the uid in the barrel to prevent dripping. For medium to high viscosity
uids, the recommended vacuum setting is 0.0.
If you are dispensing watery solvents, cyanoacrylates, or anaerobics, request the blue LV Barrier piston and follow
these steps to ll the syringe barrel and set the vacuum control.
1. Twist a blue tip cap onto an empty syringe barrel and pour your uid in.
Insert the blue LV Barrier piston. Allow an air gap between piston and uid
as shown. (If you are using the SmoothFlow piston, push the white piston
down until it comes in contact with the uid.)
2. Attach the syringe to the EFD adapter assembly.
3. Snap the safety clip tightly closed to prevent any dripping.
4. Remove the tip cap and attach a precision dispense tip.
5. Set air pressure at 0.1 bar (2 psi).
6. From TIMED mode, press STEADY.
7. With the syringe barrel pointing down over a container, unsnap the safety
clip. Press and hold the foot pedal or nger switch to ll the tip.
8. As a drop begins to form at the end of the tip, slowly turn the vacuum
regulator knob clockwise to stop the drip. Wipe the tip and adjust the vacuum as necessary.
9. Return to TIMED mode.
10. Rest the tip on the Dot Standards sheet. Press the foot pedal and release. Check the dot size. Increase or
decrease by adjusting pressure or time as needed.
Use EFD lter / mufer P/N 7016875 or wear adequate ear protection when operating the vacuum in close proximity
for a prolonged period of time.
CAUTION
NOTE: For best results when dispensing watery-thin uids, Nordson EFD recommends the use of the vacuum
suck-back lter trap. This is guaranteed to prevent uid from being sucked back into the dispenser. Refer to
“Accessories” on page 29 for the part number.
LV Barrier
Air gap
Filling the Syringe Barrel (continued)
Ultimus I–II High Precision Fluid Dispensers
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