64 Troubleshooting
4 GC Not Ready Symptoms
Temperature Never Becomes Ready
To be considered ready, a temperature must be at setpoint
±1 °C for 30 s. If a temperature never becomes ready, do the
following:
• Check for a missing insulation cup on an inlet or
detector.
• Check for a very large temperature difference between the
oven and inlet or detector.
• Check for missing insulation around the inlet or detector.
• If using a cool on- column with CryoBlast or a PTV or
MMI inlet:
• Check cryo coolant level.
• Check if operating limits have been exceeded.
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