Symbol 3250 from ISO 7000 - Title/Meaning: Primary cleaning (suction) fan Function/description: To identify the control for the primary cleaning (suction) fan. To indicate the operational status of the primary cleaning (suction) fan.
pay attention to orientation of symbolAdditional information: 
Alternative of ISO 7000-1597.
Own work using: iso.org/obp/graphics/grs/003cfe88-6acc-489a-825e-15b1406907d6 200.png
Vectorization:  Mrmw