User Guide

The Ultra 2800 Dispensing System uses a flexible hydraulic link to transfer linear force from the drive
motor to the syringe barrel. The motor lead screw and drive shaft are also linked mechanically. This
patented link allows the transfer of up to 200 pounds of force from the motor to the assembly fluid.
Once a dispense cycle is complete, a programmed mechanical pullback retracts the plunger,
attached to the EFD piston. The combined action of the plunger with the unit’s Forward steps,
programmed Pause function and Pullback feature creates a consistent deposit and prevents fluid
from oozing.
The bore and stroke of the syringe barrel are used to calculate deposit volume. For example, the
inside diameter of a 5cc syringe barrel measures 1.27 cm. One step moves the plunger 0.00008 cm,
resulting in 0.0001cc of fluid being displaced. With a 3cc barrel, it takes two steps to displace the
same amount of fluid.
Flexible cable assembly
The force of the stepper motor is transferred to the syringe barrel by a flexible cable assembly.
The plunger, attached at the end of the cable, drives into the EFD piston inside the syringe barrel.
This action forces the fluid out to make the deposit.
8
Adapter
Drive shaft
EFD piston
Plunger
Barrel retainer
Power Input Receptacle
The Ultra 2800 features a universal power supply. It automatically adjusts for input voltages ranging
from 100 VAC to 240 VAC. There is no adjustment required by the user.
Dispenser
Operation