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1 Getting Started

28 Operation Manual

GC Status

When the GC is ready to begin a run, the touchscreen shows STATUS: READY FOR INJECTION.

Alternately, when a component of the GC is not ready to begin a run, the touchscreen shows

STATUS: NOT READY and the status indicator on the GC front panel is yellow. Tapping the

Diagnostics tab displays indications of why the GC is not ready.

Alert tones

The GC provides information via beeps.

A series of warning beeps sounds before a shutdown occurs. The GC starts with one beep. The

longer the problem persists, the more the GC beeps. After a short time the component with the

problem shuts down, the GC emits one beep, and a brief message is displayed. For example, a

series of beeps sounds if the inlet gas flow cannot reach setpoint. The message Inlet flow

shutdown is briefly displayed. The flow shuts down after 2 minutes.

WARNING

Before resuming GC operations, investigate and resolve the cause of the hydrogen

shutdown.

One beep sounds when a problem exists, but the problem will not prevent the GC from

executing the run. The GC will emit one beep and display a message. The GC can start the run

and the warning will disappear when a run starts.

Fault messages indicate hardware problems that require user intervention. Depending on the

type of error, the GC emits no beep or a single beep.

Error conditions

If a problem occurs, the GC status bar changes to Not Ready, the GC status indicator turns

yellow, a number appears next to the Diagnostics tab, and the status tray and Diagnostics tab

list the condition that is causing the Not Ready condition. Select Diagnostics to view the issue

and resolve it.

When configured for enhanced GC-MS or GC-HS communications, error messages from the

connected instruments will also be displayed.

Clearing a shutdown condition

When a component is shut down, the GC becomes Not Ready, the status indicator and status

bar turn yellow, and the Diagnostics tab and status tray display messages about the condition

that caused the shutdown.

To clear a shutdown, select Diagnostics > Clear shutdown - ON to turn on all zones, including

the one that was shut down, or select Clear shutdown - OFF to turn on all zones except the one

that was shut down. Note that if you clear the shutdown but do not resolve the problem that

caused it (for example, changing a gas supply cylinder or fixing a leak), the GC will shut down

again.

Agilent Technologies 8890 User Manual

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