GE AKTAprocess, Operating Instructions Manual

Page: 64 / 180

Setting Instruction
Bypass Valves:AirTrap
Fill
Fill_Inline
Drain
Out_through_drain
The instruction System:Settings:Specials:AirTrapPauseFunction defines if the valve
goes back to the default position (Inline) or if it remains in position when the system is
set to Pause.
Sample connection valves
The optional sample pump is connected to the sample connection valve, where the feed
from System pump A and the optional gradient pump B is also connected, after the air
trap and the optional filter. Sample inlet valves are available only on systems that are
delivered with a sample pump.
When an inlet valve is open (A, B or Sample inlet valves), the corresponding sample
connection valve will also open. The sample connection valves cannot be controlled
independently by the operator.
The alarm for the sample inlet valves must be disabled if the sample pump is
disconnected. See Section 5.1.5 Final checks, on page 123 for UNICORN settings. Note:
Column valves
The column valve sets (column 1 and the optional column 2) each consist of six valves.
Similar to the inlet valve blocks, the blocks are connected directly to each other to enable
the shortest possible flow path.
To define if the valve goes back to the default position (Bypass_Both) or if it remains in
position when the system is set to Pause, see UNICORN instruction notes, on page 170
for instructions.
64 ÄKTAprocess Operating Instructions 29-0252-49 AA
3 System description
3.3 Standard components
3.3.7 Valves