Closed Loop Extraction Systems (CLS) 108: Extractor Shut Down

Once the extraction collection chamber reaches the desired pressure under vacuum, it’s ready to shut down. Shut down always starts with stopping the flow of butane – i.e. turning off the recovery pump.

Step 6 – Post Recovery Shut Down – turn off the recovery pump (7)
Component #	Component Name	Abbreviation	Open/On	Closed/Off
1	Extraction Column Valve	ECV	x
2	Low Pressure Recovery Manifold	RM2		x
3	High Pressure Recovery Manifold	RM3	x
4	Purge Port	PP	x
5	Recovery Cylinder	RC	x
6	Vacuum Pump	VP		x
7	Recovery Pump	RP		x

Step 6.1 – Post Recovery Shut Down – close the recovery cylinder liquid side valve (5)
Component #	Component Name	Abbreviation	Open/On	Closed/Off
1	Extraction Column Valve	ECV	x
2	Low Pressure Recovery Manifold	RM2		x
3	High Pressure Recovery Manifold	RM3	x	x
4	Purge Port	PP	x
5	Recovery Cylinder	RC		x
6	Vacuum Pump	VP		x
7	Recovery Pump	RP		x

Step 6.2 – Post Recovery Shut Down – close the purge port (4)
Component #	Component Name	Abbreviation	Open/On	Closed/Off
1	Extraction Column Valve	ECV	x
2	Low Pressure Recovery Manifold	RM2		x
3	High Pressure Recovery Manifold	RM3	x	x
4	Purge Port	PP		x
5	Recovery Cylinder	RC		x
6	Vacuum Pump	VP		x
7	Recovery Pump	RP		x

Step 6.3 – Post Recovery Shut Down – close the high pressure recovery manifold (3)
Component #	Component Name	Abbreviation	Open/On	Closed/Off
1	Extraction Column Valve	ECV	x
2	Low Pressure Recovery Manifold	RM2		x
3	High Pressure Recovery Manifold	RM3		x
4	Purge Port	PP		x
5	Recovery Cylinder	RC		x
6	Vacuum Pump	VP		x
7	Recovery Pump	RP		x

Step 6.4 – Post Recovery Shut Down – close the extraction column valve (1)
Component #	Component Name	Abbreviation	Open/On	Closed/Off
1	Extraction Column Valve	ECV		x
2	Low Pressure Recovery Manifold	RM2		x
3	High Pressure Recovery Manifold	RM3		x
4	Purge Port	PP		x
5	Recovery Cylinder	RC		x
6	Vacuum Pump	VP		x
7	Recovery Pump	RP		x

As always, if you have any questions please post them in the comments section. Your questions and time are valuable and we will make every attempt to help you through your process.