To Shut Down The Gc For Less Than A Week - Agilent Technologies 7820A Operating Manual

2
Operating Basics

To Shut Down the GC for Less Than a Week

WA R N I N G
26
1 Wait for the current run to finish.
2 If the active method has been modified, save the changes.
Never leave flammable gas flows on if the GC will be unmonitored.
If a leak develops, the gas could create a fire or explosion hazard.
Turn off all gases, except the carrier gas, at their sources.
3
(Leave the carrier gas on to protect the column from
atmospheric contamination.)
Reduce detector, inlet, and column temperatures to
4
between 150 and 200 °C. If desired, the detector can be
turned off. See the following table to determine if it is
advantageous to shut down the detector for a short time
period. The time required to return the detector to a
stable condition is a factor.
Detector type Stabilization time starting
from a reduced temperature
(hours)
FID 2
TCD 2
uECD 4
FPD 2
NPD 4
Stabilization time starting
from detector off
(hours)
4
4
18 to 24
12
18 to 24
Operating Guide