6. Operation
6.1 Setting Adhesive Dispense Rate
6.1.1 Syringe or Cartridge Dispensing
Notice:
Before turning the power or air on, set the “DISPENSE PRESSURE” to 0 psi by
turning the knobs clockwise until it stops and the “VACUUM” off by turning the knobs counter-clockwise
it stops. Since the power is off, no pressure will be displayed on the gauge as it is adjusted.
1.
Turn the “POWER” on (the position marked “|”). The rocker switch should light up green when the
power is on.
2.
If necessary, open the valve or regulator that controls the air inlet to supply pneumatic pressure to the
system.
Warning!
When the air is turned on, the slide may retract. Be sure to keep your hands and
other objects clear of the slide before resetting the emergency stop.
3.
If you have not already installed a syringe or cartridge, do so now. See Section 4.3.1 for instructions.
4.
Turn up the air pressure. You must first unlock the black regulator knob by pulling it away from the
controller with light manual pressure. It will click when it is unlocked. To increase the air
pressure, turn the knob clockwise. To decrease the pressure, turn the knob counter-clockwise. If
the desired pressure is unknown, start with a 5-10 psi for initial shots and increase the pressure as
necessary.
5.
Test the dispense rate by using the “PURGE” button. The purge button is only displayed when in
the “AUTO” and “AUTO REPEAT” modes. Press the left most button on the keypad to cycle
through modes. When in the “AUTO” mode, the “PURGE” button will be the button on the right.
Notice:
A receptacle should be placed under the dispense tip to capture purged product.
6.
Set the “VACUUM” suckback. This feature puts negative pressure on the syringe when it is not
dispensing to prevent leaks by pulling the adhesive back in the dispense tip between dispense cycles.
It is normally only used for low viscosity adhesives (<3,000 cP) when syringe dispensing. To
increase the vacuum, turn the “VACUUM” knob counter clockwise. As the vacuum is increased,
more air will be exhausted from the “VACUUM EXHAUST” on the back of the controller. This is
normal. The vacuum should be set so that the adhesive pulls back into the dispense tip between
dispense cycles, but does not pull all the way back into the syringe or cartridge. Test the vacuum
suck back level by using the “PURGE” button.
6.1.2 Valve Dispensing
Notice:
Before turning the power or air on, set the “DISPENSE PRESSURE” to 0 psi by
turning the knobs clockwise until it stops and the “VACUUM” off by turning the knobs counter-clockwise
it stops. Since the power is off, no pressure will be displayed on the gauge as it is adjusted.
1.
Turn the “POWER” on (the position marked “|”). The rocker switch should light up green when the
power is on.
2.
If necessary, open the valve or regulator that controls the air inlet to supply pneumatic pressure to the
system.
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