The needle wash cycle washes the needle to remove residual sample from the needle. This can be part of the sampling sequence or can be performed manually. This section describes how to trigger a manual needle wash cycle to optimize system performance in addition to the workflow sequence.

When

  • Replacing the needle wash liquid

  • Replacing wash lines

  • Routine and preventive maintenance for the needle wash system

Preparations

Observe the guidelines for needle wash, see Filling the Needle Wash Reservoirs.

Follow these steps

To start the outer needle wash, perform the following step:

On the keypad, select the WASH button.

This initializes an outer needle wash cycle, in which the outer needle surface is washed in the wash port.

 

To start the inner and outer needle wash manually, perform the following step:

On the VSC, run the script: B03 - Clean Up System
This initializes the system to perform a wash procedure for the outside and also the inside of the needle.

After the needle wash cycle has been completed, the needle moves back to the needle seat.