4.7 Cryotrap Installation
This section should be read carefully, in conjunction with any specific instructions supplied with the
cryotrap installation kit. Should you intend to install the cryotrap onto an instrument for which a
dedicated installation kit is not available please follow these instructions with particular care. The
installation should only be carried out by personnel familiar with the relevant safety regulations and
cryogenic operations.
The installation of the trap includes four steps:
1. Installation of the cryotrap control board.
2. Installation of the trap into the gas chromatograph oven.
3. Connections of the trap to a gas supply.
4. Electrical connections.
4.7.1 Installation of Cryotrap Control Board
Normally OPTIC-4SC or OPTIC-4DC Injection Systems are supplied with the cryotrap board installed.
If an OPTIC-4S or OPTIC-4D is to be extended with the cryotrap option, refer to the instructions
supplied with the cryotrap installation kit for installation details. Please follow these instructions
with particular care and do not hesitate to contact the supplier should you have any questions.
4.7.2 Installation of Cryotrap into GC Oven
WARNING!
It is essential that both the OPTIC-4 control unit and the host GC are disconnected
from the mains supply until the installation is completed.
The trap can be mounted either vertically or horizontally inside the gas chromatograph oven. To
mount the trap, a mounting stand (see Fig. 4.7) is supplied with the trap. Ideally, the trap should be
installed in a location that makes it possible to run the trap hose (cooling line/cables) through the
existing holes in the inner and outer panels of the GC oven (e.g. holes for a second inlet or a
detector). If there are no such holes available, they will need to be made after choosing their
locations carefully.
To install the trap, perform the following steps:
1. Determine location for the trap and, if necessary, remove or relocate the inlet or the
detector (if fitted).
2. Since the diameter of the trap hose is smaller than 15 mm, in most cases, it can be run
through one of the existing holes in the GC oven inner and outer panels. If this is not
possible, make the holes after choosing their locations carefully.
To Next Page
Loading...