8
Set the Dispense Rate by choosing one of the preset default speeds.
• Press the Single Barrel Select button.
• Press F3 to select Rate.
• Select Medium
• Press the Cycle Start button once to return to the Home screen.
Note: The slower your Dispense Rate, the tighter your tolerance on repeatability.
• Select Pullback by pressing the Back button.
• Use the (+) or (-) buttons to set the number of Pullback steps.
Note: The maximum number of Pullback steps is 20,000.
We recommend a minimum Pullback of 200 steps for low
viscosity fluids. For thicker fluids set your Pullback to 300
steps or higher. During initial setup, adjust your Pullback in
sets of 50 steps at a time.
9
TIP
Pullback button
Dispense Rate
Pullback
3
Rate
Mod
F3/Rate
• Unscrew and remove the barrel retainer from the adapter.
• Put a tip cap on the syringe barrel and hold barrel next to the
flexible cable assembly.
• From Manual mode (hand icon light on), advance the
plunger by pressing the Forward button, just until the
plunger reaches past the piston.
• By hand, insert the plunger into the barrel, pressing it
into the piston.
• Press the Pullback button to retract barrel, until there is just a small
gap between barrel and adapter.
• Slide barrel retainer over the barrel and thread one turn onto the
adapter.
• Replace tip cap with dispense tip. Tighten barrel retainer.
• Still in Manual mode, press the foot pedal to purge dispense tip. Press
until fluid almost fills the tip and dispenses. Be sure not to overfill the
tip since this results in excess back pressure, which can cause oozing.
See the handout provided with your Ultimus IV
dispenser,“Syringe Barrel Attachment Guide,” for easy, step-by-
step instructions.
TIP
10
Plunger
Barrel retainer
Piston
Adapter
Flexible cable assembly with syringe barrel
Syringe barrel
Attach Barrel/Purge Tip
