| 摘要 |
<p>A system comprises a cabinet holding one or more chemical containers and a dosing feed pump with a suction conduit, and a surrounding embankment in the bottom of the cabinet of material resistant to the chemicals and which can retain the contents of all the containers. One or more liq. sensors are located inside the embankment and are connected to a controller to stop the pump when liq. is detected. There is pref. a ventilation device to ensure that an underpressure is maintained in the cabinet, and at least one air inlet in the cabinet lower part but above the embankment.</p> |
