Step Commands - Agilent Technologies 1260 Infinity II User Manual

Step Commands

Each movement of the sampling sequence can be done under manual control.
This is useful during troubleshooting, where close observation of each of the
sampling steps is required to confirm a specific failure mode or verify
successful completion of a repair.
Each injector step command actually consists of a series of individual
commands that move the autosampler components to predefined positions,
enabling the specific step to be done.
Table 10
Step
Valve Bypass
Piston Home
Needle Up
Vial to Seat
Needle into Sample
Draw
Needle Up
Vial to Tray
Needle into Seat
Valve Mainpass
Reset
Agilent 1260 Infinity II Preparative Autosampler User Manual
Injector step commands
Action
Switches injection valve to the bypass
position.
Moves the piston to the home position.
Lifts the needle arm to the upper
position.
Moves the selected vial to the seat
position.
Lowers the needle into the sample.
Metering device draws the defined
injection volume.
Lifts the needle out of the vial.
Returns the selected vial to the tray
position.
Lowers the needle arm into the seat.
Switches the injection valve to the
mainpass position.
Resets the injector.
Troubleshooting and Diagnostics

Step Commands

Comments
Command also switches the
valve to bypass if it is not already
in that position.
Command also lifts the needle to
the upper position.
Command also positions the vial
at the seat, and lifts the needle to
the upper position.
Command also positions the vial
at the seat, lifts the needle, and
lowers the needle into vial.
Command can be done more than
once (maximum draw volume of
100 µL cannot be exceeded). Use
Plunger Home to reset the
metering device.
Command also switches the
valve to bypass if it is not already
in that position.
Command also lifts the needle to
the upper position.
Command also returns the vial to
the tray position.
7
119