Table of Contents
Advertisement
Thermo Fisher Scientific
To remove the GCF400 or GC4000 for cleaning:
1. Bleed the system back to atmospheric pressure.
2. Remove the rubber flask cover from the flask on the GCF400 or by
unscrewing the poly nut on the vacuum connector used on the
GC4000, leaving tubing attached to cover.
3. Withdraw the flask partially from the chamber and allow CryoCool to
drain briefly.
4. Fully remove the flask and insulating black foam ring.
5. Avoid thermal shock by placing the flask on several thicknesses of
absorbent paper toweling and allow to come to room temperature.
6. Insert a spare GCF400 or GF4000, clean and dry, into the chamber.
Cover with insulating Black foam ring, and seal with either FC400 Flask
Cover (for GCF400) or large Polypropylene cap (used with GF4000
only).
7. Make sure FC400 rubber cover is seated firmly for a good vacuum seal
or that the Polypropylene cap is screwed down firmly.
This easy system maintenance can be done in a matter of minutes; the
Refrigerated Vapor Trap need not be shut off during this process. When the
used flask has defrosted, dispose of contents in an environmentally
responsible manner. Clean and dry all flasks for next use.
NOTE: If the Refrigerated Vapor Trap is not needed for several weeks, you
may wish to shut it off between uses. Before switching on again, always
remove the used glass vessel and replace with a clean, dry trap. Check the
condition of the CryoCool; if a layer of water is visible under the CryoCool,
remove by opening the drain on the right side of the instrument (refer to
Section 5).
Failure to follow these precautions may cause the glass vessel to break when
the trap returns to operating temperature.
Operation
9
Advertisement
Table of Contents
