Filling
the Syringe
Barrel
14
Filling procedure for watery fluids and vacuum control
The Ultra 2400 vacuum regulator allows low viscosity fluids, even water, to be consistently dispensed
without dripping between cycles. A vacuum is exerted above the fluid in the barrel to prevent
dripping. For medium to high viscosity fluids, 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 fill the syringe barrel and set the vacuum control.
1.
Twist an orange tip cap onto an empty syringe barrel and pour your
fluid in. Insert the blue LV Barrier piston. Allow an air gap between
piston and fluid as shown. (If you are using the SmoothFlow piston,
push the white piston down until it comes in contact with the fluid.)
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 2 psi (0.1 bar).
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 finger switch to fill 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 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.
Caution: Use EFD filter/muffler (P/N 2170FT) or wear adequate ear protection when operating the
vacuum in close proximity for a prolonged period of time.
Note: For best results when dispensing watery-thin fluids, EFD recommends the use of the Vacuum
Suck-Back Filter Trap (part #2435). This is guaranteed to prevent fluid from being sucked back into
the dispenser. See page 26 for a sample drawing, or call EFD or email [email protected] for details.
1/2 maximum fill
LV Barrier
Air gap
Vacuum
Control
