| 摘要 |
In a kitchen extractor ventilator having grease collecting surfaces and means for spraying these surfaces with steam or hot water (see Division F4) the occurrence of a fire in the ventilator operates thermal switches to turn on the sprays, shut off the ventilator fan and close a ventilator damper. The fire extinguishing operation may also be initiated manually. Specification 1,010,938 is referred to. |
