GE AKTA avant User Manual page 514

9 Reference information
9.14 Pressure control
Additional instructions for
avoiding pressure alarms
The instruction Max flow during valve turn sets the maximum flow rate used during the
turning of the Injection valve and Outlet valve in order to avoid high pressure alarms. If
the flow rate passing through the Injection valve or the Outlet valve is higher than the
set max flow rate, the valves will only turn after decreasing the flow to the specified flow
rate. After the valves have turned, the previous flow rate will be restored. The instruction
is found under Advanced in the System settings dialog box.
Constant pressure flow
By using the text instruction Constant pressure flow it is possible to continuously adjust
the flow rate to keep a certain pressure. This could be useful for example in column
packing at constant pressure. The Advanced: Constant pressure flow instruction is
found in the Manual Instructions dialog box in the System Control module. See Sec-
tion 9.8.7 Manual instructions - Advanced, on page 492 for a description of parameters
for the Constant pressure flow text instruction.
514 ÄKTA avant User Manual 29035184 AE