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5 Operation
5.10 Setup of dispense time
This menu is activated by pressing the keys or and .
• Turn the button to select the desired dispense time and press key 10 Enter to store.
This section explains the necessary steps for adjusting the required amount of product to be
dispensed. It contains all the information required for easy and fast setup. In addition, the "Start
settings" table is explained.
The operating manuals of the relevant system components must be available for reference.
Dispense amount
The amount of product dispensed is determined by the following factors:
– Amount of pressure in the reservoir
– Length of time the dispensing valve remains open.
– Valve stroke
– Dispense needle
Drop size
Definition: A small drop has a diameter of approx. 1 mm.
A medium-sized drop has a diameter of approx. 2.5 mm.
A big drop has a diameter of approx. 5 mm.
Dispense needles
Various dispense needle types and sizes are available for each product and corresponding
application of the dispense valve:
– Conical dispense needles made of polyethylene for high viscosity products and large dispensed
amounts.
– Stainless steel needles for low viscosity and UV curing products (especially suitable for spot
applications).
– Flexible dispense needles made of polyethylene
– PTFE-lined stainless steel needles (especially for fast curing products).
Dispense pressure
When dispensing Cyanoacrylate adhesives, the dispense pressure normally should not exceed
1 bar. If this pressure is not sufficient it would be better to increase the dispense time and/or use a
bigger dispense needle. The dispense time should be long enough to allow the dispense valve to
open and close properly.
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