Agilent Technologies 1200 series, Reference Manual

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88 Agilent 1200 Series Autosampler Reference Manual
3 Troubleshooting and Test Functions
Change Piston
The change-piston function draws the piston away from the home position,
relieving the tension on the spring. In this position, the analytical head
assembly can be removed and reinstalled easily after maintenance.
User Interface
The commands for the ChemStation and Control Module (different names for
commands in the Control Module are shown in brackets) are:
Start (Change)
Draws the piston away from the home position, relieving the tension on the
spring.
End (Done)
Repositions the plunger at the home position.
Using the Change Seal Function
1 Select “ Start ” (“ Change ") to move the piston to the maintenance position.
2 Exchange the metering seal (see “Gripper Arm” on page 128).
3 Select “ End ” (“ Done ”) to move the piston back to the home position.