Bio-Rad BioLogic LP System - Manual (Page 53)

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System Operation
5.2.6 Manual Mode Operation of the Valves
Table 11 discusses each of the functions available in Manual mode operation of the Valves. Figure 20 pro-
vides an overview of those functions.
Table 11.
Manual Mode Operation: Valves
Reference Description
To manually control the Valves:
a.
From the Mode keys select Manual.
b. From the Instrument keys select Valves.
c. The main menu for manual control of the Valves is shown
below.
The display shows the following:
•
Buffer: The currently selected buffer (A - E) or mixture of
Buffers A and B.
• Divert Valve: The status of the SV-3 Diverter valve.
• Bypass Valve: The status of the SV-3 Bypass valve.
Description of the soft key choices follows.
Note: If the Divert or Bypass valves are not connected, their soft-
keys are displayed in lowercase letter and cannot be selected.
Buffer screen: Allows you to select the buffer delivered to the
column. You can select buffers A through E, or a mixture of
buffers A and B. Use the Prev or Next keys to select a buffer;
to select a mixture of buffers A and B, press the MIX soft key.
(Refer to the Mix screen shown below.)
Note: If a valve is not connected to the controller it’s letter or
letters appear in lower case and cannot be selected.
Mix screen: Enter the percentage of Buffer B such that
%A + %B = 100%.
Method: <<name>> Manual Operation
Buffer: A Divert Valve: Collecting
Bypass Valve: Column In Line
BUFFER DIVERT BYPASS
MV
M3 M1 M2
Method: <<name>> Manual Operation
Buffers: M [A] B C D E
(Select MIX for Mixture of A and B)
MIX CANCEL OK
M1
MV M1a
MV
Method: <<name>> Manual Operation
Enter Mixture: 50% B
(Mixture will contain buffers A and B)
CANCEL OK
M1a M1
MV
Manual Valves