56 Agilent Intuvo 9000 GC Installation
1 Installing the GC
Connecting air to the multimode inlet
The multimode inlet can also use compressed air cooling with
the liquid N
2
inlet cooling option. Requirements for compressed
air cooling:
• The compressed air should be free of particulate material,
oil, and other contaminants. These contaminants could clog
the inlet's cryo valve and expansion orifice or impact the
proper operation of the GC.
• Set the air supply pressure to 138 to 276 kPa (20 and
40 psig).
While air supplied from tanks can meet these criteria, the
consumption rate of air can be 80 L/min, varying based on
supply pressure.
Materials needed:
Installation of a compressed air line to the inlet cryo coolant
valve requires the hardware (and appropriate fittings) noted
below:
• Use 1/4-inch copper or stainless steel tubing for supply
tubing to the N2 valve.