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There is a special condition that allows the low oxygen alarm to be set below
18%. To access this condition press the DOWN arrow key for three seconds
while the low alarm reading displays 18%. The alarm setting can now be
adjusted to 17, 16, or 15%. A bar will blink above the setting to provide further
indication that the alarm has been set to this special <18% condition.
The low alarm value cannot be set lower than 15%, nor can it be set closer
than 1% from the high alarm value. For example, if the high alarm is set at
25%, the system will not accept a low alarm setting greater than 24%.
4. When the low alarm value is set, press the Un-lock key to accept the low
alarm setting and return to normal operation.
NOTE: The default low alarm setting is 18% O
2
. Removing the batteries or shutting the unit
OFF will reset the low alarm limit to 18% if it is set to <18%.
3.1.2 High Alarm Setting
To adjust the high alarm setting:
1. Press the Un-lock key to unlock the keypad. Note the LOW, SMART ALARM,
CAL and HIGH icons will begin to flash indicating the SET OPERATING MODE.
2. Press the UP (HIGH ALARM) key on the key pad.
NOTE: The High Alarm digits begin to flash indicating the High Alarm manual setting.
3. Use the UP and DOWN keys to set the high alarm to the desired value.
Pressing the arrow keys changes the value in 1% increments. If the keys are held
down for more than 1 second the display will scroll at a rate of 1% per second.
NOTE: If 30 seconds elapse between key actuations, the system will store the latest high
alarm setting and will revert to normal operation. If this occurs inadvertently, simply repeat
the alarm setting procedure.
When the high alarm setting is set above 100% the high alarm will indicate two
dashes - -. This special condition turns off or deactivates the high alarm.
4. When the high alarm value is set, press the Un-lock key again to accept
the high alarm setting and return to normal operation.
NOTE: The default high alarm setting is 50% O
2
. Removing the batteries will reset the high
alarm limit to 50%.
3.1.3 Smart Alarm Mode
1. Press the Un-lock key to un-lock the keypad. Note the LOW, Smart Alarm,
CAL and HIGH icons will begin to flash indicating the SET OPERATING MODE.
2. Press the Smart Alarm key on the keypad. Note the LOW digits, Alarm Mode
and HIGH digits begin a slow flash indicating SMART ALARM MODE. The high
alarm will now be set to be equal to the current oxygen reading +3% (rounded
to the nearest interger). The low alarm will now be set to be equal to the current
oxygen reading -3% (rounded to the nearest integer but never lower than 18%).
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