Carbon dioxide sensors will regulate the recirculationof fresh air.
二氧化碳传感器将调节新鲜空气，实现再循环。
2
The presence of primary hole air flows remarkably squeezes the recirculation zone, resulting in a elliptic-like cross section, with the long axis is longer than the short one up to 1.6 times.
Rotate and tilt the vacuum actuator as required to disengage the hole on the end of the actuator link from the hooked pin on the end of the recirculationair door lever.