Tools required

Slotted screwdriver (optional)

Loosening the Shipping Lock Screw

NOTICE

If the shipping lock screw is not properly loosened, the autosampler may not work properly or get damaged. Always ensure that the shipping lock screw is completely loosened before you turn on the autosampler.

Loosen the shipping lock screw above the needle unit: Turn the captive screw counterclockwise with your fingers until it hangs loosely in its spring. The use of a slotted screwdriver may facilitate turning the screw.

Figure: Loosening the shipping lock screw

Checking the Needle Unit

As required:

Autosampler state

Actions

Autosampler was turned off during the maintenance procedure

Check that the needle unit can be moved freely: Push the needle unit along the horizontal needle drive into the sample compartment. See image below. If the needle unit moves easily, the shipping lock screw is loosened properly.

Autosampler remained turned on during the maintenance procedure

Press the SERVICE button to move the needle unit into the compartment.

Moving the needle unit (autosampler turned off)
Figure: Moving the needle unit (autosampler turned off)

Restarting the Needle Unit after Service Position

As required:

Autosampler state

Actions

Autosampler was turned off during the maintenance procedure

Upon turning on power to the autosampler, the needle unit initializes automatically.

Autosampler remained turned on during the maintenance procedure

Depending on which service position was used before:

  1. Press the SERVICE button on the keypad and wait until the needle is in the first service position (needle up).

  2. Press the SERVICE button again and wait until the needle is in the second service position (needle over wash port).

  3. Press the SERVICE button a third time to initialize the needle unit after the service position. During needle movement check visually that the sample loop can move freely.