Vermes MDS 3000 Series, User Manual

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VTK ‐ VS ‐ BA ‐ 004e ‐ B | User Manual MDS 3200A
| Initial Operation
31
5.4 The Adjust
The following segments explain the adjust. The description assumes you are controlling the
adjustment procedure directly via MDC. It is also possible to do it remotely via the RS ‐ 232C
interface. The relevant information for this method can be found in chapter 7.1.2.
5.4.1 Purpose
The system is unable to perform a regular repeatable process, if the nozzle insert is not
properly positioned in relation to the tappet prior to dispensing. Therefore you have to per ‐
form a general adjustment procedure (simply called “adjust”) during initial operation and af ‐
ter each exchange of the nozzle unit. This is especially important to avoid any leakage during
dispensing.
5.4.2 Procedure
CAUTION! (cleaning before adjust)
The system has to be cleaned thoroughly before the adjust. The presence of dirt par ‐
ticles jammed between the tappet surface and the nozzle insert would compromise
the results.
Step 1: First unscrew the nozzle unit from the fluid box.
Step 2: Initiate the procedure by pressing the [adj] key.
Step 3: Use tool MDT 302 (or alternatively MDT 301, if necessary for spatial reasons) to
rotate the nozzle unit towards the fluid box, until the red control LED is lit. The in ‐
dicated value displayed should amount to 1100 or slightly above.
IMPORTANT NOTE! (limit)
Maximum admissible display value is 1250, otherwise the tappet can break afterwards.
IMPORTANT NOTE! (careful installation)
Screw the nozzle unit onto the fluid box carefully. Avoid tilting the nut by tilting the
nozzle unit. This procedure requires sufficient concentration. If the tappet guidance
including the nozzle insert has not been installed correctly, the adjust may fail (see
page 27).
Step 4: Rotate the nozzle unit counterclockwise, until the green LED is lit.
The displayed value should be in the range between 1030 and 1040.
IMPORTANT NOTE! (unstable values)
The whole procedure has to be repeated, if the value fluctuates or decreases within a
short period of time (ca. 5 sec) , starting from step 1.
Step 5: At the end, confirm the adjust by pressing [enter] .
INFORMATION! (abort procedure)

The procedure can be aborted any time by pressing [esc] .

After the adjust the green lamp dims within 5 sec.