Safety monitor indicator and
a
larm reset
A button with blue indicator light, labeled Reset, is located on the system's inlet side.
The light indicates the status for safety monitoring. After an alarm, the button is used
to reset safety monitoring.
For UNICORN, More details are provided in the Software Design Specification provi-
d
ed in the documentation package.
For DeltaV, refer to the software documentation package.
In the table below the different type of indication lights are described.
Light (display) Meaning and suggested actions
No light The system is working within safety monitoring limits.
Steady light A critical limit is detected by the safety monitoring, or the E
MERGEN-
CY STOP button has been pushed. An alarm is displayed in the
UNICORN control system.
Flashing light 1 Hz The cause of the alarm is addressed and safety monitoring is ready to
be reset by pushing the Reset button.
Flashing light 10 Hz The user has activated a silent-overpressure mode by pushing the
Reset button for at least 20 ± 5 sec. Refer to the Software Design
Specification for more information about the mode.
To deactivate the mode and reset safety monitoring, restart the sys-
tem and then reset by pushing the Reset button for 20 ± 5 sec.
3 System description
3
.4 System components
3.4.3 System pumps
ÄKTA ready XL Operating Instructions 29281616 AE 53
*** TeDIS Valid on Date Printed Printed on: 15-09-2023 11:27:35 ***
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