9-4 
 
9.4.5 Alarm Status Symbol 
Apart from the aforementioned alarm indicators, the ventilator still uses the following 
symbols telling the alarm status: 
 
: indicates alarm silenced. 
 
:  indicates multiple alarm messages. The alarm message uses a different 
background color to match the alarm level. Red background means that the highest level 
of the multiple alarm messages is high while yellow background means that the highest 
level of the multiple alarm messages is medium. 
 
 
9.5 Set Alarm Volume 
Push the Alarm Setup key. Select [Alarm Limits] and then [Alarm Volume]. Select the 
appropriate value ranging from 1 to 10. The value 1 is for the lowest and 10 for the loudest. 
 
WARNING 
  Do not rely exclusively on the audible alarm system when using the ventilator. 
Adjustment of alarm volume to a low level may result in a hazard to the patient. 
Always keep the patient under close surveillance. 
 
 
9.6 Set Alarm Limits 
NOTE 
  An alarm is triggered when the parameter value is higher than the high limit or 
lower than the low limit. 
  When using the ventilator, always keep an eye to whether the alarm limits of a 
specific parameter are set to the appropriate values. 
 
Push the Alarm Setup key and select [Alarm Limits]. You can set the alarm limits for Paw, 
MV, ftot, TVe, FiCO2, or EtCO2. Among these parameters, the low alarm limits for some 
parameters are factory-preset and are not user adjustable.