Agilent Community
Agilent Community
  • User
  • Site
  • Search the Community
  • User
  • Home
  • Technical Areas
    Technical Areas
    • AssayMap
    • Atomic Spectroscopy
    • Automated Electrophoresis
    • Bioreagents
    • Cell Analysis
    • Consumables
    • CrossLab Connect
      CrossLab Connect
      • Service Management
      • Smart Alerts
    • Dissolution
    • GC
    • GC/MS
    • LC/MS
    • LC
    • Molecular Spectroscopy
      Molecular Spectroscopy
      • Molecular Spectroscopy - UV-Vis & UV-Vis-NIR, FTIR, Raman & Fluorescence
      • 8700 LDIR User Group
      • Transmission Raman User Group
    • Sample Preparation
    • Software
      Software
      • Chromatography Software
        OpenLab CDS, OpenLab ChemStation, OpenLab EZChrom
      • Data Management Software
        OpenLab ECM, OpenLab ECM XT, OpenLab Server
      • Mass Spectrometry Software
        Data Analysis, Data Acquisition, Productivity App, WalkUp Software
    • Vacuum
  • Applications Areas
    Applications Areas
    • Basic Research
    • Energy and Chemicals
    • Environmental
    • Food and Agriculture
  • Agilent Knowledge Portal
  • Links
    Links
    • Collection of Support Resources
    • Webinar Notifications
    • Contact Support
    • User Contributions
  • Getting Started
    Community Help and Resources
  • Browse
    Browse
    • People
    • Places
    • Your View
    • Your Community Inbox
GC Portal
  • Agilent Knowledge Portal
GC Portal
Articles Recommended Parameters for GC Maintenance Methods
  • Articles
  • Videos
  • Forum
  • Announcements
  • More
  • Cancel
  • Agilent Knowledge Portal
  • GC Portal Home
  • GC Portal Articles
  • GC Portal Videos
  • More
  • Cancel
  • Created :  9 Mar 2023
  • Modified :  17 Aug 2023
  • Category :  Agilent Knowledge Portal
  • Entry Type :  Article
  • Product Type :  GC Systems
  • Component :  GC System
  • Product Name :  6850 GC System 6890 GC System 7820 GC System 7890 GC System 8860 GC System 8890 GC System Intuvo 9000 GC System
  • Task :  Maintenance
Related Articles
  • Replacing the Split Vent Trap Cartridge Filter on a 8890/8860 GC System

    This Information Applies To: Agilent 8890/8860 GC Systems with SSL, MMI, PTV, or VI inlets. Issue Split vent trap replacement is recommended as part of the scheduled preventive maintenance. Sometimes, it has to be replaced when the inlet pressure is too high, or the split vent flow cannot be reached. The replacement frequency will vary with the GC application. For other GC models, see: Replacing the Split Vent Trap Cartridge Filter on a 7890/7820 GC System Items Required QuickPick...
  • How To Vent (Shut Down) the GC/MSD - EI - MassHunter

    This Information Applies To: Agilent 5977A/B GC/MSD with MassHunter GC/MS Acquisition Software Issue: This article describes the procedure to safely vent (shut down) the 5977A/B GC/MSD with Electron Ionization (EI) The MSD will be damaged by incorrect venting. A diffusion pump will push back upstream vaporized pump fluid onto the analyzer if the MSD is vented before the diffusion pump has fully cooled. The turbo pump will be damaged if it is vented while spinning at more than 50% of its normal...
  • Replacing the Split Vent Trap Cartridge Filter on a 7890/7820 GC System

    This Information Applies To: Agilent 7890/7820 GC Systems with SSL, MMI, PTV, or VI inlets. Issue Split vent trap replacement is recommended as part of the scheduled preventive maintenance. Sometimes, it has to be replaced when the inlet pressure is too high, or the split vent flow cannot be reached. The replacement frequency will vary with the GC application. For other GC models, see: Replacing the Split Vent Trap Cartridge Filter on a 8890/8860 GC System Items Required QuickPick...
  • General Maintenance for the Agilent Flame and Graphite Furnace Atomic Absorption Systems

    This Information Applies To: Agilent Atomic Absorption Spectroscopy Systems (240/280 Series Flame AA and 240/280Z/Zeeman/GTA 120 Graphite Furnace) Issue: This article includes recommended maintenance procedures to be performed daily, weekly or annually to ensure optimum performance of the Agilent atomic absorption systems. Steps to follow: Schedule of recommended maintenance procedures: Daily Check that the exhaust system has positive extraction Check the gas supplies Check...
  • How to Blank off a GC Detector for Troubleshooting

    This Information Applies To: Agilent 6890/7890/7820/8860/8890 GC systems Issue Blanking off a GC detector can help locate the source of issues such as baseline noise, baseline spikes, elevated baseline, or detector output/performance issues. Items Required For Capillary Columns No-hole ferrule (p/n 5181-3308 ) Finger tight blanking nut (p/n 5020-8294 ) Capillary column nut For Packed Columns Brass female blanking nut 1/8 " (p/n 5180-4124) Brass female blanking nut...

Recommended Parameters for GC Maintenance Methods

Answer

This Information Applies To: Agilent GC systems


Issue

Before most maintenance procedures, the GC must be set to safe temperatures, pressures, or flows. You can create and save the maintenance method in the controlling software or the GC itself. A proper maintenance method will protect the user from injures, and the instrument from damage while performing maintenance.


  
Tips: The Intuvo 9000, 8890 and 8860 GC systems will load the right instrument setpoints while performing guided maintenance procedures through the touch screen, or the browser interface. However, a general GC maintenance method is good to have for specific troubleshooting procedures.

Steps to Follow

From the controlling software, or the GC itself, create an acquisition method and set the following parameters:

  1. Set the oven temperature to 35 °C. This temperature allows the oven fan to assist cooling.
  2. Set all inlet temperatures to 35 °C.
  3. Set inlet gas pressures/column flow as per the regular analytical method:
    • If performing column or inlet maintenance, remember to wait for the oven and column to cool down to below 50 °C before turning off inlet gas pressures.
    • If you are not performing column or inlet maintenance, keep inlet gas pressure/column flow On to keep inert carrier gas (helium or nitrogen) flowing to protect the column.
  4. Prepare the detectors:
    1. Set all detector temperatures to 35 °C.
    2. Set all detector flows to Off.

Notes for specific detectors

    • FID: Turn off the flame (this will turn off the air and hydrogen flows)
    • TCD: Turn off the filaments
    • NPD: Turn off the bead voltage (this will turn off the air and hydrogen flows)
    • FPD: Turn off the flame (this will turn off the air and hydrogen flows) and the photomultiplier voltage
      Note: When performing FPD or NPD maintenance, turn off the GC and unplug the power cord.
    • SCD/NCD:
      • Turn off hydrogen flow upper and lower, and Ozone flow/generator.
      • Turn off heat for burner and base.
      • Allow oxidizer and pump to stay on until burner and base are below 100 °C.

Save the method with an identifiable name (for example General Maintenance Method). Send the method to the GC and wait for the parameters to reach the setpoint before beginning maintenance.

 

  Learn how to effectively maintain your Agilent GC system: 
Agilent 7890 Series Gas Chromatograph Maintaining Your GC
Agilent 8860 Gas Chromatograph Maintaining Your Gas Chromatograph (GC)
Agilent 8890 Gas Chromatograph Maintaining Your Gas Chromatograph (GC) user manuals on Agilent.com

 

Was this helpful?
  • Yes
  • No
Thank you for your feedback!

Agilent Community Feedback

Agilent Community Feedback

×
We are glad this was helpful! We are sorry this was not helpful. If you still need assistance please create a community post or contact support. To help us improve, please provide any additional feedback. For full details of how we will treat your information, please view our privacy policy.
Submit Cancel
Submit Cancel
Contact Agilent Support

Still Need Assistance?

Contact Agilent Support >

Privacy Statement
Terms of Use
Contact Us
Site Help