FEI Scios 2, Руководство пользователя

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System Options : CryoCleanerEC
C O N F I D E N T I A L – FEI Limited Rights Data 7-42
1. Vent the specimen chamber (the excess LN2 starts to boil).
2. Unclip the Nitrogen vessel from the Vacuum vessel. Lift the
Nitrogen vessel out of the Vacuum vessel by the Safety pliers
placed under the ring on the neck of the Dewar cylinder.
3. Place the Lid over the Vacuum vessel to seal it from the
atmosphere (fix the clips). Pump the specimen chamber again,
the microscope vacuum remains cleaner than before and
sample contamination is still reduced.
4. Remove the cap from the Nitrogen vessel and pour out the
excess LN2 into a suitable container.
W A R N I N G !

When the LN2 is removed from the nitrogen vessel, the bottle still remains at a very low temperature!
Baking Vessel
1. Place the Nitrogen vessel onto the Stand ready for baking.
2. Place the vessel Stand on a suitable heat resistant surface.
3. Place the vessel onto it and use an Infra-red lamp to bake the base of the bottle. Baking should take place for
approximately 2 hours.
Alternatively the vessel can be baked in an oven at 90 °C for 2 hours.
4. Allow the vessel to cool down before handling!
Regenerating the Dewar by heat allows removal of condensed contamination and subsequent reuse of the vessel.
Note

The oven that is used must have a venting system to extract any harmful fumes. Alternatively it should be baked in a fume
cupboard using an infra-red lamp.
Replacing Vessel
1. Allow the vessel to cool down before handling!
2. Vent the specimen chamber.
3. Unlock two clips holding the Vacuum vessel Lid. Remove the Lid from the Vacuum vessel.
4. The Nitrogen vessel can be placed in the Vacuum vessel, taking care that the 'O' ring seal on the Vacuum vessel
is secure when joining the two components together. Secure the two components by fixing the clips to the top of
the Nitrogen vessel and locking the clips down.
5. Pump the specimen chamber. The Vacuum vessel is pumped along with the specimen chamber.
Maintenance
• Keep the 'O' rings clean of dust and fibre particles by inspecting the Vacuum vessel main 'O' ring on a regular
basis. If the Vacuum vessel is removed frequently from the specimen chamber, inspect the specimen chamber
'O' ring seal each time.
• Keep the sealing surfaces of the Nitrogen vessel and the Vacuum vessel Lid clean and free of dust and fibre
particles.
• Do not use any kind of vacuum grease on the 'O' rings.
• Wipe outsides of the stainless steel parts to remove fingerprint stains with a lint free cloth dampened with pH
neutral soap solution.
Spare Vessel
It is possible to obtain secondary nitrogen vessel kit, which contains:
• Nitrogen Vessel
• Vessel Stand
• Vessel Plug