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Troubleshooting and Test Functions
Maintenance Functions
Maintenance Functions
Certain maintenance procedures require the needle arm, metering device,
and gripper assembly to be moved to specific positions to enable easy access
to components. The maintenance functions move these assemblies into the
appropriate maintenance position. In the ChemStation the ALS maintenance
positions can be selected from the Maintenance menu in the Diagnosis
display. In the Control Module the functions can be selected in the Test
screens of the autosampler.
User Interface
The functions for the ChemStation and Control Module (different names for
functions in the Control Module are shown in brackets) are:
Change Needle: moves the safety flap away from the needle, and positions
the needle arm for easy access to the needle and needle
seat.
Change Piston: relieves the tension on the metering spring (draws the
piston to the outer position), enabling easy disassembly of
the metering head assembly).
Park Arm
(Park Gripper): secures the gripper arm to the park position behind the
sampling unit. ready for transport or shipping of the
autosampler.
Home: moves the tray arm to its home position for better access
and exchange of the trays.
Change
Gripper: The change gripper function moves the gripper to the front
of the autosampler enabling easy access to the gripper
release mechanism.
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