Introduction 1
Operation Manual 13
• The GC is programmed for events to occur at specified
times (Clock Table).
• The GC is in gas saver mode (Gas Saver).
Beeping instrument
A single beep means that 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 disappears when a run starts.
A series of warning beeps sound if the GC encounters a
more serious problem. The GC starts with one beep. The
longer the problem persists, the more the GC beeps. For
example, a series of beeps sound if the front inlet gas flow
cannot reach setpoint. The message Front inlet flow shutdown is
briefly displayed. The flow shuts down after 2 minutes. Press
[Off/No] to stop the beeping.
A continuous beep sounds if a hydrogen flow is shut down
or a thermal shutdown occurs. Press [Clear] to stop the beep.
Fault messages indicate hardware problems that require user
intervention. Depending on the type of error, the GC will
beep once or not at all.
Blinking setpoint
If a gas flow, multiposition valve, or the oven is shut down
by the system, Off or On/Off will blink on the appropriate
line of the components parameter listing.
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