Three air source modes of ventilator:
1. The standard small oxygen cylinder;
2. Large oxygen cylinders of various specifications;
3. Oxygen supply in the center of the wall;
Alarm phenomenon:
"SL" letter or pressure gauge symbol flashes on the screen, the machine sound and light alarm;
Alarm value:
When the air source pressure is lower than 0.28MPA;
Cause of alarm:
Air source output pressure is too low (recommended 0.4MPA);
The output pressure of the pressure reducing valve or central oxygen supply is unstable;
