Nordson Ultimus II - Filling the Syringe Barrel; Syringe Barrel Filling Guidelines; Filling Pourable Fluids; Filling Thick Fluids

Do not completely ll syringe barrels. The optimum ll is a maximum 2/3 of the barrel capacity and 1/2 of the barrel
capacity when using the EFD blue LV Barrier
™
piston.
CAUTION
For best results, we strongly recommend
that you use a piston as part of your
dispensing system. The white EFD
SmoothFlow piston is appropriate for most
uids and has several advantages:
• First, vacuum adjustment is less sensitive.
• Second, the piston prevents fumes from
the uid being exhausted into the work
environment.
• Third, the piston prevents uid backow
into the dispenser if the syringe barrel is
inadvertently turned upside down.
• Fourth, the piston makes it easy and safe
to change tips without dripping.
For watery solvents and cyanoacrylates,
request the blue EFD LV Barrier piston,
available in 3cc, 10cc, and 30cc sizes. If you
are dispensing an RTV silicone and nd that
the piston bounces and causes stringing,
request the EFD Clear Flex piston.
Filling Procedure for Pourable Low and
Medium Viscosity Fluids
If the uid you are dispensing is pourable, take the syringe barrel, twist on
a blue tip cap, and pour your uid in. Insert a white SmoothFlow piston
and carefully press down until it contacts the uid. The syringe barrel is
now ready for use.
Filling Procedure for Thick Fluids
If your uid is thick or non-leveling, you can spoon it into the syringe barrel
with a spatula. Or, if the uid comes packed in a 300 ml (1/10 gallon)
cartridge, try loading the barrel with a caulking gun. Then, press the
SmoothFlow piston to move the uid to the bottom of the syringe barrel
and remove trapped air.
Trapped air in thick uids can lead to drooling and oozing. Also, repetitive
air cycles can bore tunnels through non-leveling uids, causing spitting
and inconsistent deposits. The SmoothFlow piston eliminates these
problems. It prevents tunneling by providing a barrier to the pulsed-air
cycles. And it prevents oozing by responding to the pressure of trapped air
with a slight suck-back movement after the dispense cycle.
2/3 maximum
ll
2/3 maximum ll
SmoothFlow piston
Caulking gun
Filling the Syringe Barrel
Remember
For best results, EFD strongly recommends the use
of a piston as part of your dispensing system.
Do not tip the barrel upside down or
lay it at. This will cause the liquid to
run into the dispenser.
When changing tips
or attaching a tip
cap, snap the safety
clip completely
closed to prevent
any dripping or
bubbling.
Open
Closed
Fumes cannot escape.
No air gap
when using the
SmoothFlow
piston.
SmoothFlow piston prevents uid backow.
If you choose to not use a piston when dispensing
thin uids, remember these important points.
Ultimus I–II High Precision Fluid Dispensers
26 www.nordsonefd.com info@nordsonefd.com 800-556-3484 Sales and service of Nordson EFD dispensing systems are available worldwide.