14 Maintaining Your GC
1 About Maintaining the GC
• The filament in the TCD will be damaged if exposed to
air while hot. To protect the filament, turn it Off.
• Set all detector flows to Off.
Once the zones reach < 70 °C, you can perform general GC
maintenance.
Inlet Maintenance Method
This method prepares the inlet for maintenance while
leaving the detector at operating temperature.
• Set the oven temperature to 35 °C. This allows the oven
fan to assist cooling.
• Set all inlet temperatures to Off and set inlet gas
pressures to 0.0.
• If performing column maintenance, remember to wait
for the oven and column to cool down before turning
off column carrier gas flow at the source. Also
remember to cap both ends of the column to keep air
out once it is removed.
• If you are not performing column maintenance, keep
inert carrier gas (helium or nitrogen) flowing to protect
the column.
• Maintain all temperature setpoints for installed detectors,
if desired.
• The filament in the TCD will be damaged if exposed to
air while hot. To protect the filament, turn it Off.
Once the zones reach < 70 °C, you can perform general GC
maintenance.
Be careful! The oven, inlet, and/or detector may be hot enough to
cause burns. If the oven, inlet, or detector is hot, wear
heat-resistant gloves to protect your hands.
Be careful! The oven, inlet, and/or detector may be hot enough to
cause burns. If the oven, inlet, or detector is hot, wear
heat-resistant gloves to protect your hands.
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