Respironics ESPRIT, Руководство по обслуживанию, Страница: 92 / 329

Chapter 6
6-26
Esprit® Ventilator Service Manual © Respironics, Inc. REF 580-1000-02 G
Diagnostic Codes
b. If the blower still does not work and the LED still lights, reinstall
the original blower and replace the blower controller PCB. You can
slave in and connect the replacement blower controller PCB to see
if it corrects the problem before replacing the original PCB.
5. If the blower doesn’t start, 24/29 VDC is present at the terminal block,
and the LED on the blower controller PCB does not light:
a. Check the continuity and connections of the harness between J9
on the sensor PCB and J3 on the blower controller PCB. If there is
a continuity problem, replace the cable.
b. If the blower still doesn’t work, replace the sensor PCB.
6. If the blower is working, check the DRPT liftoff value (section 7
describes how to generate a DRPT report).
7. If the liftoff value is below 180 steps, there may be foreign material in
the valve that prevents it from closing all the way.
a. Cycle the air flow rate from closed to fully open several times to
expel any foreign material. Use the hardware screen to open the
air valve to its maximum position (2000 steps), then toggle
between the hardware screen and any other screen in the
diagnostic mode to cycle the valve.
Reattempt normal startup.
b. If the value is still below 180 steps, replace the air valve.
8. If the value is over 525 steps, either the air valve or the airflow sensor
is not functioning correctly, perform the air flow accuracy test of the
performance verification (section 8):
a. If the air flow accuracy test passes, replace the air valve.
b. If the test fails, replace the air flow sensor.