Respironics ESPRIT, Руководство по обслуживанию, Страница: 76 / 329

Chapter 6
6-10
Esprit® Ventilator Service Manual © Respironics, Inc. REF 580-1000-02 G
Diagnostic Codes
3116 Backup audio not sounding.
Audio test (test 13): ventilator
activates backup alarm and prompts
for a response that alarm is audible.
This code indicates that the backup
alarm is not working.
1. Verify correct key press.
2. Replace the backup alarm.
3. Replace digital PCB.
4. Replace the primary alarm to MMI
PCB cable.
5. Replace MMI PCB.
6. Replace main PCB.
3117 Crossover circuit fault.
Crossover circuit test (test 5):
crossover solenoid (SO1) is
energized to supply air source gas to
close safety valve, and an air flow
rate of 5 LPM is established with the
exhalation valve closed. After three
seconds, the inspiratory pressure
transducer (PT3) should measure a
pressure of 50 cmH
2
O or greater.
This code indicates that PT3
measured <50 cmH
2
O.
1. Check for patient circuit leaks,
bypass the oxygen sensor, and
replace exhalation bacteria filter.
2. Check crossover solenoid (Chapter
5).
3. Replace crossover solenoid assembly.
4. Replace main PCB.
3118 Blower not turned off.
Blower test (test 3): turns blower off
and opens air valve. Air flow sensor
(FS1) should measure flow less than
50 LPM within 20 seconds. This
code indicates that FS1 measured
>50 LPM.
1. Check blower (Chapter 5).
2. Replace blower controller PCB.
3. Replace sensor PCB.
4. Replace main PCB.
3119 Blower DAC failure.
Blower test (test 3): turns blower
controller switch on but sets analog
voltage that controls blower speed to
0 V. Blower should remain off, and
air flow sensor (FS1) should
measure flow less than 50 LPM
within two seconds. This code
indicates that FS1 measured >50
LPM.
1. Check blower (Chapter 5).
2. Replace blower controller PCB.
3. Replace sensor PCB.
4. Replace analog PCB.
3120 Relief valve cracking pressure too
high (>170 cmH
2
O).
Pressure relief valve test (test 9): at
an oxygen flow of 1 LPM, the
exhalation pressure transducer (PT2)
should measure a stable pressure of
120-160 cmH2O within 60
seconds. This code indicates that
PT2 measured >170 cmH
2
O.
1. Check pressure relief valve (Chapter
5) and adjust if necessary.
2. Replace pressure relief valve.
3. Replace sensor PCB.
Diagnostic
Code Code Description Recommended Repair