Helmer Scientific Automatic Cell Washing System - UltraCW II
Operation Manual
360386/D
11
Decant Process
During the Decant step, the rotor rapidly accelerates to the specified speed then
decelerates, allowing the tubes to move back to the neutral position so the rotor
lock can engage. The rotor spins in the opposite direction at the specified speed,
while the rotor lock holds the tubes at a slight negative angle. Waste solution is
expelled from the tubes by low centrifugal force, while virtually all the cells are
retained in the tubes in the form of red blood cell buttons. The waste solution is
directed to the drain hole in the bowl by the drainage system. The spent solution
flows out of the cell washer, into the drain tubing, to the waste container or
sanitary drain.
The number of revolutions per minute is adjustable fro 0 RPM to 1500 RPM.
The default value is 370 RPM.
Loop Process
The Loop process allows one or more previous processes to be repeated. Only
one Loop process can be included in a program.
The number of loops is adjustable from 1 to 100 times (1x to 100x). The selected
number of loops includes the initial run of the process(es) included in the loop
(e.g. selecting to loop a process 3 times means that process will run a total
of 3 times).
The default value is 2 times (2x).
Check Process
The Check process allows a program to be paused after one or more processes
in the program have run. Once the previous process(es) has finished, the Check
process will cause the program to be paused and the lid to open. This allows the
user to check the tubes and/or add other fluids. The program will continue once the
lid is closed.