Buchi SpeedExtractor E-914, Operation Manual

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6 Operation
58
SpeedExtractor E-916 / E-916XL / E-914 Operation Manual
6.4.8 Start, pause, stop and abort extraction
Use the green START and the red STOP buttons to start, pause, abort, or interrupt an extraction pro-
cess. These buttons are only applicable to the extraction process. All other procedures such as flush
or preheat are controlled by the function buttons (see also section 4.5.1).
• Start: Go to the main display and press START once. The START button is only active in the main
display.
• Pause: Press STOP once. The process is interrupted and can be continued by pressing START
again. Recommended action, e.g. the solvent reservoir is going to run dry or not connected.
• Abort: Press STOP twice. The process is aborted, the extraction cells are discharged and flushed
with nitrogen, and the collection rack and heating block are returned to their starting position.
Recommended action, e.g. if it turns out that the selected extraction method does not work prop-
erly.
• Abort immediately: Press STOP three times: The process is interrupted, and all assemblies remain
at their operating positions. All actions such as releasing the lift or opening the position valves, can
be controlled manually using the service menu. Recommended action in case of an unexpected
occurrence.
6.4.9 Post-extraction procedures
!
CAUTION
Risk of dangerous or moderate burns when handling hot extraction cells.
•
Do not touch any hot parts
• Always use the gripper to move extraction cells
Cleaning the extraction cells
• After the extraction process is finished, open the
protective shield, pull out the heating block, and
take out the extraction cells using the extraction
cell gripper. It is recommended that the hot extrac-
tion cells be placed into the rack (E-916: P/N 053690;
E-916XL: P/N 11069547; E-914: P/N 053691) to cool
down the cells.
• Remove the upper filter using the filter hook (P/N
053316). Turn the cells upside down to get rid of the
sample mixture. Unscrew the plug screw. Remove the
sample using the extruder rod P/N 11055284. Dispose
of the filter, and clean the metal frit and the plug
screw in an ultrasound bath. Rinse the extraction cells
with water or organic solvent, put them for example in
acetone (or a methanol/acetone/hexane mixture) for
5 – 15 min, and then put them in a dishwasher or oven.
Do not exceed 300 °C for the latter.