Self-tests
Puritan Bennett™ 700 Series Ventilator System Service Manual
10070389 Rev. A
3-15
3.4.4 Troubleshooting
Refer to Table 3-9 for EST troubleshooting information, including a description of how the
ventilator performs each test. These procedures are sequenced to correct the most probable
malfunction or to present the most efficient corrective action first. The proposed fixes listed,
however, may not always correct the particular problem.
NOTE:
It is recommended you use the
Sensor data
function (Section 4.2.1) to help confirm the
failure of suspect components.
15
Main alarm test
Checks whether various
alarm sounds are
audible (at maximum
volume)
Failure if not
passed
Yes
Listen for each named sound,
then press ACCEPT to verify it is
audible. Press CLEAR if a sound is
not audible.
16
Backup alarm
test
Checks operation of
backup alarm circuit
Fault if not
passed
Yes
Press ACCEPT if alarm is audible
or press CLEAR if alarm is not
audible.
NOTE:
Overriding this fault could result in no audible alarm if the main speaker fails.
17
Fan test
Verifies main fan is
operating correctly by
reading fan status bits
Failure if not
passed
No
18
Heaters test
Verifies correct
operation of heaters in
exhalation system
Fault if not
passed
Yes
NOTE:
Overriding this fault could result in inaccurate monitoring of exhaled volume or damage to the
ventilator’s flow sensor or exhalation valve.
Table 3-8: EST tests (continued)
No.
Test
Purpose
Status
In SST?
Comments
Summary of Contents for Puritan Bennett 700 Series
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