Operator’s Manual of Anesthesia System 4 - 15
System Interface Waveform/Parameter/Spirometry/Trend Display Zone
4.3.2 Backup Flow Control System
If the EFCS fails, the system automatically opens the Backup Flow Control System (hereinafter referred
to as the BFCS) cover, and adjusts the gas flow with the needle valve of flowmeter. Before the EFCS is
restored, you cannot disable the BFCS.
The BFCS screen is shown in the figure below:
Figure 4-17 Backup Flow Control System
After the BFCS is enabled, the system will automatically provide O
2
flow at 1L/min. Rotate the needle
valve to adjust the flow, and the flow will increase the flow from 1L/min. The total flowmeter is used
to display the total flow. With the O
2
concentration displayed on the screen, you can manually
calculate the O
2
flow and balance gas flow. By pressing the [Audio Pause] or [Alarm Reset] button,
you can disable the audio alarm of [Backup Flow Control is enabled].
When the EFCS is still on, you can pull the BFCS cover outward to start the BFCS. To disable the BFCS,
close all the needle valves and press the [Disable Backup Flow Control] button on the screen. Then
select [Ye s ] in the pop-up dialog box and close the BFCS cover to disable the BFCS.
When the [Low Battery Voltage!] alarm shows, the system will prompt to use the BFCS to control
the flow. Please connect the system to an AC power supply as soon as possible.
4.4 Waveform/Parameter/Spirometry/Trend
Display Zone
Displays the pressure, flow rate, volume, CO
2
, O
2
, N
2
O, and AA waveforms; displays the monitoring
parameters; displays spirometry; displays the mini trends and compl/PEEP trends.
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