Vermes MDS 3000 Series, User Manual

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VTK ‐ VS ‐ BA ‐ 004e ‐ B | User Manual MDS 3200A
| Initial Operation
32
5.5 Initial Liquid Supply
Step 1: If not using a prefilled cartridge, fill an empty one with the desired fluid, till up to
80 % of its capacity.
Step 2: Insert the cartridge into the corresponding holder and screw it onto the luer ‐ lock
fluid box 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.
CAUTION! (check for leakage)
All of the parts must be installed correctly, and the entire configuration must be leak ‐ tight –
otherwise the substance to be dispensed can trickle out in an uncontrolled manner.
Step 5: After establishing a convenient dispensing pressure, activate the pneumatic supply.
Valves designed by VERMES Microdispensing can be operated at a relatively low supply
pressure, in the range between 0 and 7 bar. This upper limit should not be exceeded in nor ‐
mal applications; in most cases even a value of 4 bar is sufficient.
Standard values:

Low ‐ viscous fluids (e.g. water) : 0.5 – 1.5 bar

Medium viscosity (e.g. SMT ‐ adhesives) : 1.5 – 2.0 bar

High viscosity (e.g. pastes) : 2.0 – 7.0 bar
5.6 Removing Air Inclusions from the System
Air must be removed from the system, for instance after the exchange of a cartridge.
Save the current dispensing parameters beforehand (see page 36) .
Confirm the following parameter selection:
Rising 0,5, Open Time 1,5, Falling 0,17, Delay 5–30, Needle Lift 75 and Number of Pulses 500 ‐ 2000
Dispense a quantity of ca. 500 to 2000 portions by pressing [trig] .
When this measure is complete, retrieve the initial parameters stored beforehand (see 36) , and
start the dispensing process.
5.7 Parameter Input and Start
Step 1: Enter the dispensing parameters (either recommended by the manufacturer or
determined in your own experiments) into the submenu “Pulse Parameters“ of
the control unit (see page 19).
Step 2: Press [enter] to acknowledge the selection.
Step 3: Return to the first menu level by pressing [esc] repeatedly.
Step 4: Start the dispensing process by pressing [trig] .
INFORMATION! (Starting the dispensing process)
A dispensing process can only be initiated in the first menu level by all the usual methods. In
the other levels it is only possible with the [trig] key.