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Defining the System
Retaining Ring—
The brawn of the AirFree dispensing technology
The multi-legged stainless steel design locks the syringe in place,
making the syringe and gun one. In dispensing, any flexing
between the barrel reservoir and surface to which it is secured
represents a pressure loss and will change the amount of fluid
dispensed. Due to the tight tolerance between the stainless steel
retaining ring and the gun, there is no room for barrel flexing
when the thrust-of-dispense cycle is applied. This is a key
contributor to maintaining positive displacement dispensing.
The Control Unit—
The brains of AirFree dispensing
The control unit gives the user control over volume output;
dispense rate, reverse motion and motion delay. By imputing and
manipulating these parameters, the microprocessor will calculate
the number of steps needed to achieve the requested result. A
universal switching power supply automatically adapts to multiple
AC inputs. The foot pedal may be removed for automated
activation using a dry contact.
Helpful Hints
Priming the System
Removal of the tip cap and introduction of a new needle traps air
pockets inside the stem of the syringe and hub of the needle.
Because our system positively displaces fluid, it is very important no
air is present in any portion of the syringe. Therefore, it is important
that any trapped air is pushed out of the syringe prior to dispensing.
Changing Barrels Reservoirs
Same Size Barrels: Simply switch one barrel for the next. The
only consideration is to prime the new dispense tip prior to
dispensing (page ?). The LDS9000 recognizes barrels of the same
size so it is not necessary to reset the system.
Different Size Barrels: When changing to a different size barrel, it
is necessary to reset the lead screw, reset the dispense parameters
and prime the dispense tip. To reset the lead screw remove the
barrel reservoir, flip the Auto/Manual switch to Manual and the
Extend/Retract switch to Retract. Hold the foot pedal down until
the lead screw retracts all the way into the dispense gun.