Agilent Technologies 6850 Series II User Information page 90

SHUTDOWN 2
Possible causes:
SHUTDOWN 3
SHUTDOWN 4
Possible causes:
SHUTDOWN 7
SHUTDOWN 8
SHUTDOWN 9
SHUTDOWN 13
SHUTDOWN 14
SHUTDOWN 15
Possible causes:
Released: March 2004
Oven cryo shut off
To clear the shutdown, turn the GC off, then on, or change the temperature
setpoint.
Cryo timeout: Check timeout setpoint.
Cryo fault: Check coolant supply. Defective cryo valve.
Cryo shutdowns conserve coolant when the GC is unable to start a run. The
cryogenic cooling system may still be working properly. A cryo timeout occurs
if your specified cryo timeout period expires before the oven reaches its
temperature setpoint. A cryo fault occurs if cryo cooling has been on for over
16 minutes but the oven has not reached its temperature setpoint.
Inlet pressure
Inlet flow
Source gas supply pressure too low
Large leak or broken column or column plugged
Gas saver flow rate set too low to get highest run pressure
Flow set too low for the column in use
Defective/Contaminated inlet flow module
The split ratio is too low
Shutdown 3. The inlet failed to reach its pressure setpoint within
5.5 minutes or cannot maintain its pressure setpoint. The inlet's flows go to
purge mode and the instrument goes to a not ready state until the inlet
reaches the pressure setpoint.
Shutdown 4. The inlet failed to reach its flow setpoint within 2 minutes or
cannot maintain its flow setpoint. The GC will not be ready until the problem is
fixed and the flow reaches its setpoint.
Det H gas pressure
2
Det air/ref pressure
Det makeup pressure
Aux 3 pressure
Aux 4 pressure
Aux 5 pressure
To clear the shutdown, correct the problem so the detector or auxiliary flow
module reaches the pressure setpoint.
Source gas supply pressure too low
Leak in the system (including column)
Defective detector or auxiliary flow manifold
Shutdown 7. The detector's hydrogen gas was unable to reach or maintain
the pressure setpoint in the allotted 2 minutes.
Shutdown 8. The detector's air/reference gas is unable to reach or main-
tain the pressure setpoint.
6850 Series II GC User Information
Messages
Shutdown messages
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