Sartorius Stedim Biotech BIOSTAT RM 20 basic Bedienungsanleitung Seite 52

52 Appendix
Alarm message Possible causes
Overpr Flow1 If the bag pressure 1 should
exceed the upper limit set in
the Technician menu (normally
30 mbar), the Gasflow1 valve
will close and the alarm
message is triggered. This does
not deactivate the Gasflow1
controller. If the bag pressure
decrease below the lower limit
set in the Technician menu
(normally 20 mbar), the
Gasflow1 valve is reopened
and the control process
continues.
You can acknowledge this
alarm message via the "Home"
button.
Overpr Flow2 If bag pressure 2 should
exceed the upper limit set in
the Technician menu (normally
30 mbar), the Gasflow1 valve
will close and the alarm
message is triggered. This does
not deactivate the Gasflow2
controller. If the bag pressure
decrease below the lower limit
set in the Technician menu
(normally 20 mbar), the
Gasflow2 valve is reopened
and the control process
continues.
You can acknowledge this
alarm message via the "Home"
button.
Measures
Please check whether or not
the connection tubing between
the device and bag has been
crushed or kinked.
Is the filter heater of the
respective bag functional and
in operation?
This can be checked by touching
the filter heater – it should feel
warm.
Did you set a gas flow rate that
is too high for a bag that is too
small?
Please check whether or not
the connection tubing between
the device and bag has been
crushed or kinked.
Is the filter heater of the
respective bag functional and
in operation?
This can be checked by touching
the filter heater – it should feel
warm.
Did you set a gas flow rate that
is too high for a bag that is too
small?