In recent dog days, it is very hot. Please pay attention to whether the breathing valve diaphragm equipped with the emergency ventilator needs to be replaced!

Recently, high temperature or water vapor may cause membrane adhesion, resulting in small air volume or no air!

In case of this fault, please open the exhalation valve, take out the diaphragm, wipe the water vapor, and then reinstall it!

The schematic diagram of replacement is as follows: