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High-priority System Alarms
V
I
ENTILATOR
NOPERATIVE
Priority
High
Why it occurs
The system self-test indicates a failure or malfunction of a component that causes therapy to stop or
not meet essential performance criteria.
What to do
Contact Philips Respironics Customer Service
Device
Therapy is stopped and both audible and visual alarms are continuous. Depending on the systems
performance
impacted, you may or may not see a message on the screen.
during active
alarm
V
S
R
ENTILATOR
ERVICE
EQUIRED
Priority
High
Why it occurs
This alarm occurs when the system self-test indicates an error that does not affect the ability of the
ventilator to meet essential performance criteria.
What to do
Contact Philips Respironics Customer Service
Device
The device continues to operate (possibly in a reduced capacity mode). If the problem is not corrected,
performance
the device will generate a reminder message until the issue is corrected. Additionally, if therapy is
during active
stopped, a reminder message will immediately appear when therapy is turned on again.
alarm
O
BSTRUCTION
Priority
High
Why it occurs
The ventilator detects an obstruction in the patient's inhalation path, exhalation path, or external flow
sensor. The ventilator detects that the exhalation port is missing.
What to do
•
•
•
•
Requirements
Passive, dual limb, active PAP, or active flow circuit
Device
The device will automatically open the active exhalation valve and continue to operate.
performance
during active
alarm
Algorithm
Any circuit, inhalation limb: an obstruction is detected when either of the following conditions exist:
summary
•
•
Any circuit: The expiratory port is missing and causes an obstruction alarm if the average flow is less
than 1 lpm for 2 breaths or 60 seconds.
Active flow or dual limb circuit: an obstruction is detected when the external flow sensor measures
less than 0.5 lpm for 65 continuous seconds.
H
E
P
IGH
XPIRATORY
RESSURE
Priority
High
Why it occurs
During the expiratory phase, the delivered pressure exceeds the target patient pressure by 5 cmH
more.
What to do
•
•
Note: This alarm condition may be due to pinched tubing or the patient having a fast breath rate.
Check the circuit for kinked or pinched tubing.
Check the bacteria filter or HME for a blockage or occlusion.
Ensure that the exhalation port is not occluded or missing.
Check the external flow sensor for a blockage or occlusion.
The flow exiting the machine is less than 0.5 lpm for 5 seconds continuously
The flow exiting the machine during inspiration is less than 1 lpm for 5 seconds, 2 breaths, or 65
seconds for very low breath rates.
Check the circuit for kinked or pinched tubing.
Ensure that the leak device is not blocked or occluded.
Alarms and System Messages
Instructions for Use | Alarms and System Messages
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