Agilent 7820A Gas Chromatograph Troubleshooting Handbook

About this manual

This manual provides a comprehensive list of symptoms and corresponding measures to take when errors occur with the Agilent 7820A Gas Chromatograph hardware or chromatographic outputs. It includes instructions for handling 'GC Not Ready' messages and other general problems.

The document is structured into sections covering concepts, ALS and detector symptoms, chromatographic symptoms, startup/shutdown issues, leak checks, and specific troubleshooting tasks such as measuring column flow and performing self-tests. This manual is written in German.

What's inside

• Concepts and General Tasks
• ALS and Detector Symptoms
• Chromatographic Symptoms
• GC Symptoms When Not Ready
• Symptoms During Shutdown
• Leak Checks
• Troubleshooting Tasks

Frequently asked questions

What is the purpose of the 'Ignore Ready' setting for a device?

This setting allows you to use the GC even if a device, such as an inlet or detector heater, is defective and prevents the system from reaching a ready state.

Which devices can have their ready status ignored?

You can ignore the ready status of inlets, detectors, the oven, or an EPC module, but you cannot ignore the status of other components like injection valves or automatic liquid samplers.

What must be done to a defective device after it is repaired?

You must reset the device to Ignore Ready = False so that its status is no longer ignored when it is used in an analysis.