Section 5 - Operation
Oxygen Monitoring
Setting Alarm
Limits
The oxygen alarm limits are automatically set to the defaults at power-
up. You can adjust the alarm limits within specified ranges. The valid
values and the defaults are shown in the following table:
Alarm Limit Default Possible Values
High 100% 19%–100%; must be greater
than low alarm limit
Low 30% 18%–99%; must be less
than high alarm limit
Follow these steps to change the high or low alarm limit:
1. Press the HI or LO oxygen alarm key, depending on which alarm
limit you want to change.
A box is drawn around the selected alarm limit.
2. Press the increment (up arrow) or decrement (down arrow) key to
increase or decrease the highlighted alarm limit.
If you do not press a key within five seconds, the highlighting box
disappears. To begin again, return to step 1.
3. To save the new value, simply stop pressing keys.
In five seconds, the highlighting box disappears and the new value
is saved as the alarm limit.
5-10-4
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