- Posts: 7
- Joined: Tue Dec 20, 2016 4:36 pm
I've been assigned to a new GC this month, and the front EFC 21 shows 0,0 mL/min flow on the Compass CDS software. It also shows less than 1,0 cm/sec linear velocity. Even though it shows no flow, the system accepts changes in the column pressures and actually spends some time getting the system to the set pressure, marking the 0,0 flow as 'Ok' afterwards, as if the set pressure had been achieved.
I asked around, and it seems the previous technician switched the septum, liner and trimmed the column recently, and that before all that had been done, the EFC showed flow and velocity normally.
I hope you guys can help me with that