23 hours ago, numskull said:

 

 

”If a considerable increase in concentration of pollutants is recognised by the air quality sensor, recirculated air mode will temporarily be switched on.
When the pollutant concentration decreases to the normal level, the recircula- ted air mode is automatically switched off.“

 

 

 

Wonder if it's clever enough to detect slurry spreading - doubt it though.

 

The two main reasons I switch on recirc being slurry spreading and smoke from fires - less frequently smoke from diesel buses.

Often though by the time you smell it and dive for the recirc button it is too late

 

Yep, it reacts quickly. I was approaching a blackstuff gang earlier today, travelling toward it quickly and even before I smelt it, the recirc came on. It’s kicked-in with smoke and diesel too. No idea about slurry spreading though!