Agilent 1260 Infinity II Preparative Autosampler User Manual 119
Troubleshooting and Diagnostics
7
Step Commands
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 1 0 Injector step commands
Step Action Comments
Valve Bypass Switches injection valve to the bypass
position.
Piston Home Moves the piston to the home position.
Needle Up Lifts the needle arm to the upper
position.
Command also switches the
valve to bypass if it is not already
in that position.
Vial to Seat Moves the selected vial to the seat
position.
Command also lifts the needle to
the upper position.
Needle into Sample Lowers the needle into the sample. Command also positions the vial
at the seat, and lifts the needle to
the upper position.
Draw Metering device draws the defined
injection volume.
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.
Needle Up Lifts the needle out of the vial. Command also switches the
valve to bypass if it is not already
in that position.
Vial to Tray Returns the selected vial to the tray
position.
Command also lifts the needle to
the upper position.
Needle into Seat Lowers the needle arm into the seat. Command also returns the vial to
the tray position.
Valve Mainpass Switches the injection valve to the
mainpass position.
Reset Resets the injector.
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