Metrohm 789 Robotic Sample Processor XL - Manual (Page 37)

2.2 Instrument setup
Metrohm Sample Processor, Installation 29
Robotic arms that can be mounted in two different ways (e. g.
6.1462.050) can have the limiting screw positioned according to the re-
quired swing direction (see above).
Mounting procedure
The 786 Swing Head must already be in position and configured before
the robotic arm can be mounted.
Fig. 13 Mounting the robotic arm
• Switch the instrument off and then on again. Wait
until the Swing Head drive has finished the initializa-
tion movements.
• Carefully push the robotic arm over guide cam 10
from below (see drawing). Hold the robotic arm in
such a way that limiting screw 9 points toward the
tower of the Sample Processor while the robotic
arm assumes the maximum swing angle.
• Use the three enclosed screws to attach the robotic
arm from below.
• Switch the instrument off and on again.
Details about the individual robotic arm types can be found in the In-
structions for Use of the 786 Swing Head.
2.2.6 Connecting pumps
On the Sample Processor models with one built-in membrane pump
one external pump per tower can be connected and controlled. The
models with no pumps even have two connections for external pumps.
Ext.
Pump 2
The pump connections (for 3-pin M8 connectors) on the rear panel of
the Sample Processor tower supply a feed voltage of 16 V for a max.
load of 600 mA.
Suitable pump models are:
• Metrohm 823 Membrane Pump Unit (membrane pump, suitable for
aqueous media without particles)
• Metrohm 772 Pump Unit (peristaltic pump, suitable for organic sol-
vents and aqueous solutions containing particles)
10
9