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Initial Operation VTK - TR -BA- 171e - 1 - User Manua l MDS 3080 -V 55 Press the [enter] - key , if the gre en adjus t LED is ON. If you screw in the adjust screw too far (5 µm or more sh o wn ), then the red adjust LED …
Initial Operation
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VTK-TR-BA-171e-1 - User Manual MDS 3080-V
The display shows “Calibration Please Wait”. This can take a few
moments. Please wait.
At the end of the calibration, the system tests the performance of the
valve. If the performance is below 100 % and therefore unsatisfactory,
the display shows for a moment the message “Max Needle Lift”
together with a percentage value of the valve performance for the
attached valve. In this case, you should send the valve to VERMES
Microdispensing GmbH for maintenance.
If the quality of the valve is okay, this message will not be shown.
In the display, the message changes from “Max Needle Lift” to “Press
Enter”. Press the [enter]-key.
If the quality of the valve is okay, this message will not be shown. You
will reach the next step without pressing [enter].
The display shows the starting value of the adjust.
Now turn the adjust screw with the help of tool MDT 327 slowly in
the direction “close”, until the green adjust LED is ON. The adjust is
possible between 0 µm and 4 µm. (In fixed adjust mode, the adjust is
possible between 0 µm and 50 µm.)
Initial Operation
VTK-TR-BA-171e-1 - User Manual MDS 3080-V
55
Press the [enter]-key, if the green adjust LED is ON.
If you screw in the adjust screw too far (5 µm or more shown), then
the red adjust LED will be ON. Screw back a little bit, until the green
adjust LED is ON, and further back, until both LEDs are OFF. Then
screw forward again, until the green adjust LED is ON. An adjust can
only be confirmed as successful with [enter], while the green adjust
LED is ON.
Once you have completed the adjust successfully, the display returns
to the message “3090+ xx Hz”. You are again in the main menu of the
MDC. The system is now ready to be filled with the dispensing
medium.
Tab. 18: The adjust
Initial Operation
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VTK-TR-BA-171e-1 - User Manual MDS 3080-V
6.6 Initial Liquid Supply
– Step 1: If not using a prefilled cartridge, fill an empty one with the required fluid, till up to
80 % of its capacity.
– Step 2: Insert the cartridge into the corresponding holder and screw it onto the Luer-Lock
connector, rotating clockwise.
– Step 3: Place the compressed-air adaptor onto the cartridge and rotate clockwise until it
latches in place.
– Step 4: Connect the PVC hose with coupler plug KS4-CK-6 to air supply. A coupler socket type
KD4-1/2-A is required.
– Step 5: After establishing a convenient dispensing pressure, activate the pneumatic supply.
IMPORTANT NOTE
Check for leakage
All of the parts must be installed correctly, and the entire configuration must be leak-tight –
otherwise the dispensing fluid can trickle out in an uncontrolled manner.
Valves designed by VERMES Microdispensing can be operated at a relatively low supply pressure,
in the range between 0 bar and 4 bar. This upper limit should not be exceeded in normal
applications.
Standard values:
• Low-viscous fluids (e.g. water): 0.5 – 1.5 bar
• Medium viscosity (e.g. SMT-adhesives): 1.5 – 2.0 bar
IMPORTANT NOTE
Do not activate system without dispensing medium
Except for the adjust, do not activate the system “dry” (i.e. without dispensing medium).
Otherwise, it might damage the system. For flushing the valve keep within the following limits:
• Needle Lift max. 80
• Falling min. 0.4
6.7 Removing Air Inclusions from the Fluid Box
Air must be removed from the fluid box, for instance after the exchange of a cartridge.
Save the current dispensing parameters beforehand (see paragraph 7.6, page 63).
Confirm the following parameter selection:
Rising 0.5, Open Time 1.5, Falling 0.4, Delay 5–30, Needle Lift 75, Number of Pulses 500–2000
Dispense a quantity of ca. 500 to 2000 shots by pressing [trig].
When this measure is complete, retrieve the initial parameters stored beforehand (see
paragraph 7.7, page 63) and start the dispensing process.