Thermo Scientific VF-F20-A Operating Manual page 116

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6 Operation
Page 116
Parameters
Collection path mode
Collection valve mode
Needle positioning mode
Integral Fraction Collector FT (VF-F20-A) Operating Manual
Description
Defines how the needle moves across the
racks.
Vertical: The needle follows a vertical
meander-shaped path.
Saw Vertical: The needle follows a vertical
saw-shaped path.
Horizontal: The needle follows a horizontal
meander-shaped path.
Saw Horizontal (default): The needle follows
a horizontal saw-shaped path.
Defines whether the fraction collection valve
stays at collection position or switches to
waste position when the needle moves from
one vial to next vial.
Interrupt (default): In this mode, the fraction
collection valve switches to waste position
when the needle moves to the next vial,
during which the flow is directed to waste
container.
Continue: In this mode, the fraction collection
valve remains at collection position when the
needle moves from vial to vial, during which
the flow keeps spraying out from the needle.
This property refers to the pusher position
and needle height during fraction collection.
Different parameters as explained in the next
rows can be set to change the needle height
in different needle positioning mode (In Vial
or Above Vial) in Instrument Method Wizard
or Editor.