• Created : 
  • Modified : 
  • Category :  Agilent Knowledge Portal
  • Entry Type :  Article
  • Product Type :  GC Sample Preparation and Introduction
  • Component :  Automatic Liquid Samplers
  • Product Name :  7693A Automatic Liquid Sampler
  • Task :  Maintenance Troubleshooting
Related Articles

  • Changing the Turret of the 7693A Automatic Liquid Sampler

    This Information Applies To: Agilent 7693A Automatic Liquid Sampler Issue: Two turrets are provided with the 7693A injector, the 16-sample standalone turret, and the 3-sample transfer turret used with the 150-sample tray (See Figure 1 ). The turret may need to be replaced when the ALS is exchanged, for replacing the syringe carrier assembly, or to add an autosampler tray to the GC. The standalone turret allows you to analyze up to 16 samples. It holds two solvent positions and one waste bottle...

  • Removing and Installing a Syringe on the Agilent 7693A Autosampler

    This Information Applies To: Agilent 7693A Automatic Liquid Sampler Issue: The automatic liquid sampler may need to be replaced, in case it is worn or dirty. Steps to follow To remove the syringe: Open the injector door. Slide the syringe carriage to the top position if necessary. Completely loosen the plunger thumb screw until it reaches the stop, and lift the plunger carrier off of the syringe plunger. Open the syringe latch by swinging it in a counterclockwise...

  • Automated Liquid Sampler Plunger Error

    This Information Applies To: Agilent 7693A, 7650A, and 7683 Series automated liquid samplers Issue GC software or GC LED display shows ALS Failure code 245: Autosampler front tower plunger error or ALS Failure Code 945: Auto injector back tower plunger error. Fault LED on the tower is flashing four times and sometimes the needle will stick in the vial, giving a plunger error. Items Required Gloves Replacement syringe. For help on Agilent syringe selection, see GC Autosampler Syringes...

  • Performing a GC Manual Injection with OpenLab ChemStation

    Multiple Results
    This Information Applies To: Agilent 8890, 8860, 7890, 7820, 6890, 6850 GC systems Issue Manual injections are needed for a gas chromatograph without an automated sampler. They are also used for troubleshooting specific issues such as no peaks,...

  • Performing a GC Manual Injection Using OpenLab CDS

    Multiple Results
    This Information Applies To: Agilent GC systems ( 8890, 8860, 7890, 7820, 6890, 6850, 6820) using Agilent OpenLab CDS Issue Manual injections are needed for a gas chromatograph without an automated sampler. They are also used for troubleshooting...

Replacing the Syringe Carriage Assembly in the Agilent 7693A Automatic Liquid Sampler

Answer

This Information Applies To: Agilent 7693A Automatic Liquid Sampler

Issue:

This document explains how to replace the syringe carrier assembly in case you want to change from standard to high volume syringes, or if an Agilent support representative determines the assembly has to be exchanged.

Background

Use the standard syringe carriage assembly for syringe sizes up to 100 μL, and the Enhanced Sample Handling Syringe Carriage for syringe sizes from 250 μL to 500 μL. (See Figure 1)

Besides the assembly color, another way to identify the syringe carriage assembly is the distance between the syringe holder clips. It is 1.0 cm end-to-end for the Standard Syringe Carriage Assembly and 1.5 cm end-to-end for the Sample Handling Syringe Carriage Assembly (See Figure 2)
 

Standard Syringe Carriage Assembly Enhanced Sample Handling Syringe Carriage Assembly
Figure 1. Syringe Carriage Assemblies for the 7693A Autoinjector


Figure 2. Distance between clips
1. Standard Syringe Carriage Assembly, 2. Enhanced Sample Handling Syringe Carriage Assembly

Steps to follow

To Remove the Syringe Carriage Assembly:

  1. Remove all vials and bottles from the turret, then disconnect the injector cable from the GC. You may need to lift the injector tower in order to disconnect the cable.

  2. If desired, remove the injector from the mounting post and mount the injector tower on a parking post.

  3. Open the injector door and remove the syringe see Removing and Installing a Syringe on the Agilent 7693A Autosampler 

  4. Remove the ALS Turret, see Changing the Turret of the 7693A Automatic Liquid Sampler 

  5. Slide the syringe carriage assembly down until the assembly cable is accessible below the tower casing, and detach the cable from the assembly.

  6. Slide the syringe carriage assembly completely up until the flange and latch are accessible.

  7. Completely loosen the T-10 Torx screw above the syringe latch.

  8. Completely loosen the T-10 Torx screw at the top of the syringe carriage assembly.

  9. Carefully remove the syringe carriage assembly from the injector carriage. (See Figure 3)


    Figure 3. Removing the syringe carriage assembly

To Install the Syringe Carriage Assembly:

  1. Slowly position the replacement syringe carriage assembly on the injector carriage. The syringe carriage assembly will hang in place when positioned correctly.

  2. Completely tighten the T-10 Torx screw above the syringe latch.

  3. Completely tighten the T- 10 Torx screw at the top of the syringe carriage assembly.

  4. Slide the syringe carriage assembly completely down until the cable input jack on the assembly is accessible below the injector casing.

  5. Connect the assembly cable to the syringe carriage assembly.

  6. Slide the syringe carriage assembly completely up. (See Figure 4)


    Figure 4. Installing the syringe carriage assembly

  7. Reinstall the turret, see Changing the Turret of the 7693A Automatic Liquid Sampler 

  8. Install the syringe and close the injector door, see Removing and Installing a Syringe on the Agilent 7693A Autosampler 

  9. Plug in the injector cable and, if necessary, install the injector tower on the mounting post.

  10. Align the injector, see How to align the Agilent 7693A GC injector 

  11. If you have a sample tray, calibrate the ALS system, see How to Calibrate the Agilent 7693A Sample Tray 

 

 Tip 
Learn more on how to operate your Agilent 7693A Automatic Liquid Sampler:
SI-7693-1100s - Agilent 7693A ALS Basic and Advanced Operation and Maintenance e-learning available from Agilent education.
 
Was this helpful?
Privacy Statement
Terms of Use
Contact Us
Site Help