Combustible Gases The user must ass

Combustible Gases The user must assess the process in accordance with Directive 1999/92/EC (ATEX 137) for the extraction of explosive gas/air mixtures inside or outside a similar environment. In accordance with the requirements indicated by this assessment, a suitable device must be selected which fulfils the specifications of Directive 94/9/EC (ATEX 95). Aggressive Gases The diaphragm pump used is highly resistant to chemicals. In the case of particularly aggressive gases or products, the materials used for the pump parts in contact with gas must be assessed (as described in chapter 3.1.2). Poisonous Gases Use a separator when pumping poisonous or harmful gases. Prevent such substances from leaking out of the appliance or pump. Treat these substances according to the applicable environmental protection regulations. The diaphragm pump, control valves and hose lines can be damaged by poisonous or aggressive gases. Test the strength and leak-tightness of the connecting lines and the connected apparatus. Prevent environmental poisons, e.g. mercury, getting into the diaphragm pumps. Fulfil the requirements, for example: • German Hazardous Substances Regulation (GefStoffV) of 01. December 2010 • Regulations 2006/121/EC (classification, packaging and identification of hazardous substances), • Manufacturer's safety data sheets on hazardous substances.