![GE AKTA ready Скачать руководство пользователя страница 172](http://html.mh-extra.com/html/ge/akta-ready/akta-ready_operating-instructions-manual_128010172.webp)
Connect containers
Buffers
Connect the buffer inlet tubing to the appropriate buffer containers. Check that there
are sufficient buffer volumes available.
Significant differences in the liquid level (height of elevation), in between con-
nected inlet/outlet lines and containers, may cause unintended mixing in be-
tween the inlet/outlet lines if the valve switching time, (the time of overlap in
open valves when switching inlets without pump stop), is selected too long.
Note:
Samples
Connect the sample inlet tubing to the appropriate sample containers. Check that there
is sufficient sample available.
Use air sensors for optimal sample application.
Tip:
Fractionation
If fractionation is included in the method, connect the outlet tubing from the chosen
outlet valves to appropriate fractionation containers.
Check that the fractionation containers will accept the volumes diverted to
them during the run.
Note:
Waste
Connect the waste tubing to a waste container. Check that the waste container is not
full and will accept the volume diverted to it during the run.
Set valve switch time for inlet
and outlet valves
The UNICORN control strategy features a short overlap in valve switching at the inlet
and outlet valves. This overlap allows for continuous operation of the pump without the
risk for blockage of the flow path due to a closed inlet or outlet manifold. When operating
the system and switching from one inlet to another (from one outlet to another), the
valve to be closed will be kept open for the period of a defined switch time after opening
up the next valve. A minimum switch time of 0.1 seconds is required to account for
possible delays in the execution of instructions of the system control and to eliminate
the risk for a blockage of the flow path, respectively.
The valve switch time between the inlet and outlet valve can be changed in UNICORN.
It is recommended to keep the valve switch time as short as required for the operation.
Set valve switch time in UNICORN
The valve switch operation time is set in UNICORN in the Settings dialog box, in the
Specials instruction in Inletswitchtime _Outletswitchtime. The time range is 0.0 to 5.0
seconds. Default is 1 second.
172
ÄKTA ready Operating Instructions 28960345 AD
11 Run a method
11.1 Final preparations before a run