Resvent iHope RS Series, User Manual

Page: 125 / 261

7-1
7. Alarms
7. Alarms
NOTE
• The delay time from the onset of an alarm condition
to the point that the alarm signal leaves the
ventilator input/output port is typically 500ms. The
time it takes the message to appear on an external
device such as a remote alarm depends on the
characteristics of the device.
• The delay in the determination of an alarm for FiO
2
exceeds high or low limit is at least 30s.
• When there are changes in alarm settings, the
system stores the changed data in the flash
memory chips of the main board automatically and
the data stored in flash will not lost due to power
interruption. When the equipment restarts, the data
are restored automatically.
• When power is lost for less than or equal to 30s,
the alarm settings prior to the power loss shall be
restored automatically.
• When the contents of the log reaches capacity, the
system will automatically erase the old information
by the principle: first in, first out.
• If the alarm system is power down, there is no time
for the log is maintained. But an audible alarm will
be annunciated by the buzzer.
• The expiratory-limb-partial-occlusion alarm
condition is determined by exhalation flow and
pressure measurements.
The ventilator’s alarms notify the operator of problems.
These alarm types, including their audiovisual
characteristics and required actions, are summarized in
Table 7-1.