Keypad Operation 3
Operation Manual 33
A continuous tone sounds if a hydrogen flow is shut down
or a thermal shutdown occurs.
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, a status message appears. If the
message indicates broken hardware, more information may
be available. Press the applicable component key (for
example, Front Det, Oven, or Front Inlet).
When configured for operation with an MS using Smart
Technologies (for example, a 5977 MSD), the GC will display
message related to the MS. In this case, check the MS for
more information.
Blinking setpoint
If the system shuts down a gas flow, multiposition valve, or
the oven, Off will blink on the appropriate line of the
component’s parameter listing.
If there is a detector pneumatics shutdown or failure in
another part of the detector, the detector On/Off line of the
detector’s parameter list blinks.
For any flow or pressure parameter, and for oven
temperature, go to the blinking parameter, then press
[Off/No] to clear the fault. Resolve the problem if possible,
then press [On/Yes] on the parameter to use it again. If the
problem is not fixed, the fault will recur.
Before resuming GC operations, investigate and resolve the cause
of the hydrogen shutdown. See Hydrogen Shutdown in the
Troubleshooting manual for details.
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