25
RS Biotech
User Guide
To alter the frequency of the auto-zero press the ‘
+
’ and ‘
↵
’ simultaneously and the
following message will be displayed
;
PrG
AZ
Press ‘
↵
’ and display changes to
28
dAY
.
By pressing the ‘
+
’ and ‘
-
’ keys this value can be changed in steps from
28
to
14
,
7
,
1
or
OFF
.
Press ‘
↵
’ to confirm the new setting.
If a CO
2
alarm occurs, the auto-zero will automatically take place after 1 minute.
This is to confirm that the CO
2
sensor is correctly referenced.
If after a 15-minute delay, the CO
2
is still in an alarm condition and re-alarms it will
again auto-zero.
In the event of high CO
2
alarms, open the inner door for a few seconds to ensure
that the CO
2
level drops below set point. Also check that the CO
2
pressure is set
correctly to 0.35bar (5psi).
In the event of low CO
2
alarms check that the CO
2
supply is present and set to the
correct pressure.
