The shutdown does not require any changes to the exhaust system or to the firing of the tunnel kiln, and the system can be restarted by simply pushing a button.
停机时无需对排气系统和隧道窑的烧成作任何调整改变，并可简单地通过一个按纽重启。
2
Other handy features include an ergonomic Venturi lever to reduce grit ingress, a new purge button that is self clearing and a new silicone exhaust valve to improve breathing performance.