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Picture 17. The brown component around the liner is an o-ring.
O-ring is round the liner keeping it tight in its position. The liner can also be removed with
tweezers as in the Picture 17. Check the purity of the liner. If glass wool is still pure white, put
the liner back. When the needed parts are replaced then put the screws back in the opposite
order. Do not screw them too tight, just as much as they can be turned around, but not
tightened.
After screwing every part in their place, put the sample tray back to its position. Use the GC
remote controller to set the inlet temperature to 300 °C and the detector temperature to 300
°C. All flows and the pressure must be off. The temperatures have to be increased first before
setting the pressure or the GC will be unstable. This sort of instability causes a safety shut
down. Change the method from “Maintenance” back to “Alcohols” when the temperatures are
ready. All the required settings will be automatically on. If the flame won’t ignite
automatically, ignite it with the remote controller. Let the GC stabilize. Check the inlet with a
leak detector to be sure you didn’t leave a leak. Read about Leak Detector from the next
chapter. If a leak is detected, check if everything is screwed properly in the inlet.
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