Column flow/pressure drops during desorb

Can you share some screen captures from MassHunter Acquisition with your run method loaded of the  Inlets SSL-Front (or whichever one your P&T is connected to), GC Columns window, the Configuration/Columns window, and the Configuration/Modules window?   It could also be an issue inside the P&T. During desorb a valve inside the P&T puts the trap inline with the flow to the inlet while the trap heats up to desorb your compounds. If the valve is not working right, the trap is plugged or leaking, or a few other possibilities, the pressure/flow to the GC inlet won't be present.  

Does the GC work fine without running the P&T?  If you just setup and start a run by pressing the start button, does it run?  

Hi again. When i start a run by pressing  the start button it doesnt drop down. But when i try with a different sample introduction(G1888) it drops. But the peak shape and background noise is better this time around.

Hi Cumysat9552,

Any update on your problems? If you were able to solve the issue it may help others in the community, if not feel free to post again and the community will continue to work with you.

Regards

James

Hi Cumysat9552,

Any update on your problems? If you were able to solve the issue it may help others in the community, if not feel free to post again and the community will continue to work with you.

Regards

James

Yes.. Just recently i had checked the purge and trap nut after a water management and it was loose. I guess that's why when at desorbstion stage the pressure would drop.

Thank you very much 

Just before the the line enters the trap