Installing an extension loop in a system with a multidraw valve

Installing an extension loop in a system with a multidraw valve
Topic LCI-USG-0107, Last Updated 06/15/2023

In a two-valve system, the extension loop is installed between the multidraw valve and the sample needle.

  1. If system flow is running, stop the flow. On the touchscreen, tap COMMANDS, and then tap the pause button next to Flow is On.
  2. Open the sample manager fluidics door.
    Figure 1: Multidraw valve system
    Multidraw valve
    Extension loop with holder
    Sample needle tool-free fitting
  3. Disconnect the tool-free fitting that is attached to the extension loop and the sample needle.
    Figure 2: Extension loop latch
    Extension loop latch
  4. Push the extension loop latch backward to release the extension loop holder and remove it from the sample manager.
  5. Using the tool-free fittings, install the extension loop between the multidraw valve and the sample needle.
  6. Push the extension loop latch forward to secure the extension loop holder in the sample manager.
  7. See Modifying needle and extension loop configuration parameters, for reporting the correct extension loop volume configuration in the touchscreen.
  8. On the touchscreen, tap Setup > Startup and follow the remaining on-screen prompts to prime and prepare the system for use.

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To avoid risk of personal injury and to prevent damage to laboratory equipment, always operate your Waters products in accordance with the applicable operational and safety information, your organization’s standard operating procedures, and local regulations.

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