I have a Mindray brand,Wato EX-65 model anaesthesia equipment who doesn`t allow fresh air [oxigen] to enter in patient circuit.
I make all possible tests without any results. I don`t have any kind of alarms displayed.
Please, can someone have any ideea what can be broken ?
Thank you for your attention.

may we know your parameter settings when you observed the said problem?

The equipment is in another part of my country. I programmed to go there next week to see exactly ehat`s happend. But the anaeteshist who use every day this equipment, told me he use the usual settings, in mechanical ventilation.

Somehow, the fresh outside air is blocked. Maybe is a valve ...?

Thank you very much.

Dear
If they are using regular settings, then air block only could be the reason for that.