Microlab
®
STAR Service Manual
7-28
7.7.2 Function
To reach a grid pattern of 9 mm, two different Channels A & B are used in the
Microlab
®
STAR.
All A Channels use the upper guide shafts and therefore all B Channels use the
lower guide shafts on the pipetting arm.
Note: The left and the right side of the Pipetting Arm have each upper and lower Y-
guides for the Pipetting Channels to travel on.
The Pipetting Channel carries the pipetting head which performs all Pipetting Steps.
The following features are implemented in the channel:
• Independent Z and Y movements
The limitations in Y direction are due to the neighbouring Channel
• Carries both types of Pipetting heads (300 and 1000 µl)
• All A- and all B Pipetting Channels are universal and may be individually
addressed with dip switches (see section 8.1.6 Node settings on page 8-5).
Each channel has its own
µController and its own CAN Address, which may
individually set.
Note: This means every A Pipetting Channel may be placed onto every A-, and
every B Pipetting Channel may be placed onto every B Position.
Attention: As mentioned before and after:
Handle with care when servicing (touching, handling) the pipetting Channels!
Avoid applying any direct or indirect force to any guides.
Special attention must be given to when the channel fixing screws must be
loosened, or tightened for adjustment reasons, as this may damage the Y slide of
Pipetting Arm.
When the channels are stored temporarily e.g. into the Microlab STAR Service Kit.
Unsecured storage may bend the Z guide irreparably out of shape.
(The same could happen during crashes, where movements of the Pipetting Arm in
X and / or Movements of the Channels in Y collide with an obstacle, eg.due to
imprudent use of Service Software.)
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