Refer to the respective connection diagram while performing the steps described below:
LN2 Cooling Option:
1. Connect the “OUT” port of the cryogenic valve assembly (2406-4306) to the trap.
2. Isolate a part of the trap hose between the GC outer panel and the valve with a piece of the
polyolefin foam pipe 12 mm ID (2406-2623) of a required length.
3. Connect one end of the ¼ inch copper tube to the “IN” port of the cryogenic valve assembly
using the reducing fitting (usually pre-installed). Isolate the tube with the polyolefin foam
pipe (2406-2605).
4. Decide on the LN2 vessel location and bend the assembled line accordingly. Do not bend the
line sharply as this may dramatically worsen the trap cooling performance.
5. Isolate the valve with a piece of the polyolefin foam pipe 22 mm ID (2406-2624) supplied
with the kit.
6. Connect a free end of just built tube/valve assembly to the LN2 vessel.
CO2 Cooling Option:
1. Connect one end of the 1/8 inch, 1.5 meter tube (2406-2606) to the trap using 1/8 inch
union.
2. Isolate the tube with a piece of the polyolefin foam pipe (2406-2605) of a required length.
3. Isolate a part of the trap hose between the GC outer panel and the valve with a piece of the
polyolefin foam pipe 12 mm ID (2406-2623) of a required length.
4. Connect the 1/16 to 1/8 inch reducing fitting (2406-2614) to a free end of the 1/8 inch tube.
5. Next, connect one end of the 1/16 inch tube (2406-2608) to the reducing fitting. Isolate the
tube with a piece of the polyolefin foam isolation.
6. Connect the “OUT” port of the CO
2
cryogenic valve assembly (2406-4307) to a free end of
the 1/16 inch tube.
7. Connect the “IN” port of the valve assembly to one end of a short piece of the 1/8 inch tube
(2406-2607). Isolate the tube with the remaining part of the polyolefin foam pipe.
7. Decide on the cylinder location and bend the assembly accordingly. Do not bend the line
sharply as this may dramatically worsen the trap cooling performance.
8. Isolate the valve with a piece of the polyolefin foam pipe 22 mm ID (2406-2624) supplied
with the kit.
9. Connect free end of the tube/valve assembly to the CO2 cylinder.
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