Thermo Scientific
imPULSE S.U.M. with Touchscreen Console User’s Guide
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135
Chapter 6
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Operating information
Sampling without a recirculation loop
When the recirculation loop is not being used, a line set can be used
for sampling instead. To use a line set for sampling, push the line set
down to the liquid level. Use a pump to draw off liquid into a secondary
container. A sample may also be pulled via the drain line in the same
manner.
6.7 Harvesting
6.7.1 Using the Harvest module
If you have pumps set up per section 2.2.3, follow the steps below
to drain the system using the Harvest module on the Touchscreen
Console.
Note:
Before using the Harvest module, it must be configured. See
section 3.4.10 for information about Harvest module configuration.
1. Locate the Harvest module on the Home screen of the
Touchscreen Console. Touch the top of the module to open the
Harvest Settings screen, then select
Harvest Control
.
2. The screen that appears will prompt you to select a method of
harvesting: either by gravity or by pump.
• If you select Gravity:
Enter the fluid target. Then touch
Done
.
• If you select Pump:
Enter the fluid target by entering the
amount to take out from the current value. Enter the Stage 1
flowrate, the percentage harvested before Stage 2, and the
Stage 2 flowrate. Then touch
Done
.
3. If the system has pinch valves connected, the next screen that
appears will prompt you to ensure that the Harvest pinch valve is
closed. If the pinch valve is open, move the slider from “Open” to
“Closed.” Then touch
Start Harvest
.
4. After you have selected
Start Harvest
, the pumps will turn on
and begin harvesting the user-specified amount of liquid from the
system. The screen that appears (Figure 6.7) will show the current
stage of the harvesting process, the amount of fluid remaining, the
current mass, the BPC pressure, and the liquid pressure values
(Liquid Pressure1, Liquid Pressure2, and Delta).
