Chapter 5
Repair
REF 580-1000-02 G
Esprit® Ventilator Service Manual © Respironics, Inc.
5-11
NOTE:
On the hardware screen, a white background indicates that the button is
enabled or energized, and a gray background indicates that a button is
disabled or de-energized.
Figure 5-9: Diagnostic Mode Hardware Screen
Flow Control Hardware
•
The
Air
button controls the flow rate of the air controller, and allows
you to set an air flow from 0 to 200 LPM or step position from 0 to
2000 steps.
•
The
Oxygen
button controls the flow rate of the oxygen controller, and
allows you to set an oxygen flow from 0 to 200 LPM or step position
from 0 to 2000 steps.
•
The
Exhalation
button controls the steps of the exhalation valve, and
allows you to open or close the exhalation valve from 0 (fully open) to
2000 (fully closed) steps. (Although the exhalation stepper motor can
be commanded to 2000 steps, a maximum of 1800 steps is
displayed.)
Voltage Control Hardware
•
The
Monitors
button simulates voltages for pressure, volume, and flow
analog output voltages. The selected voltage (from 0 to 5 V) is sent to
the analog output port (the DB15 connector on the ventilator back
panel).
•
The
Voltage Wrap
button allows you to adjust the blower DAC voltage
from 0 to 5 V, and compare it to the ADC output voltage shown in the
Voltage Wrap
status display.
•
The
Blower
button allows you to adjust blower voltage from 0 to 5 V.
