Hello gmdeluca
see
viewtopic.php?f=2&t=6332 , The PDF was written for a PE ATD 400, but is applicable for the turbo-matrix connectors too.
The remote cable connection in the PDF is the same for either a 6890 & 7890, remember to set the wiring on the turbo-matrix, so that on a fault/failure, it will start a GC run, this is so that the data files collected will match the sample analysed. Plus a fault can be readily seen when analysing the data, as you should just see a blank injection chromatogram. (not the usual background or Internal standard)
For the Transfer line, I had the luxury of being able to keep the instrument configured with the Turbo matrix, (and did not need to regularly remove the column from the turbo matrix to the injection port).
As the GC had only one injection port (front), I made the place where the rear injection port would have been, the place where the transfer line went through to get in to the GC, with about 2cm protruding into the GC, so there weren't any cold spots the sample may of cold trapped on to before reaching the GC oven. (if you do already have a back injector, an unused detector point, is also an easy way into the oven, and keep all the insulation you remove, as you may need to replace, if you change to a different GC). I did the above as the PE connectors we had looked like sample loss and a cold trap waiting to happen.
Perkin Elmer want you to use a deactivated transfer line from the turbomatrix to a column connector in the GC, I did not want to do this (mention aboved), so I ran the GC column through the transfer line and connected it directly to the turbomatrix, and I did not have any problems with accelerated front of column degradation, or peak shape issues (if your turbomatrix has MS Mode, activate this, so it reduces the amount of air that leaks in from around the cold trap, going on to the column. (the amount of split is governed by the post injection split, use a flow meter to verify)
hope that helps
Alex
