Apeks Supercritical The Duplex™ Operation Manual
9
Revision Date 8/28/2018
intended to valve off the inlet and outlet of the vessel to protect the user from any release
of pressure. WARNING: Failure to use these valves can lead to injury.
2.1.2.3. Temperature Control Heat Exchanger – The temperature control heat exchanger
regulates the temperature of the CO
2
just before it enters the extractor vessels and is in a
cooling loop along with the extractor vessel water jackets and the extractor flow switch.
2.1.2.4. Extractor Flow Switch –The flow switch continually monitors for water flow in the
extractor loop and will stop the system if flow is lost.
2.1.2.5. Vent Valves – Each extraction vessel has its own vent valve (Valve 4A and 4B) these
valves will open automatically to vent the extractor so they are safe to open. These
valves should be vented to the vent valve manifold (located on the Separator Stand) or
outside.
2.1.2.6. Pressure Gauges – Three gauges, Extractor A, Extractor B and Pump outlet (located on
top of temperature control heat exchanger), are located on the extractor stand and should
correlate to the pressures on the HMI for each portion.
2.1.2.7. Junction Boxes – Each extraction vessel has its own junction box which will have a
Harding Connector and at least one thermocouple connector that connects the main
control panel.
2.1.3. Separation Vessel/Control Stand
2.1.3.1. Separation Vessels – The Separator stand holds four separators that work in banks of
two. Bank 1 is located on the left-hand side of the stand and Bank 2 is located on the
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