FILTERINDSATS FOR DFU 911 FILTERBOKS

The flow direction of the sampled air must be strictly adhered to. Carefully note the arrow marking inside the DFU 911. To avoid damage to the RFC 911 filter element, remove it prior to mounting the DFU 911. When commissioning of after a replacement, enter the current date on the RFC 911 filter element in the field for that purpose. Maintenance and service No filter required in: IT infrastructure Clean rooms Change after max. 3 months: Production with high to very high dust level, incl. carpentry workshops, and wood processing. Recycling plants Change after max. 12 months: Warehouses with and without forklift operation. Hollow ceilings, hollow floors. Public buildings. Cable tunnels, power supply tunnels. Switch cabinets, transformers, wind turbines.