New technology for greater fan airflow
Filter fans are used to provide an optimum climate in enclosures and cabinets that contain electrical and/or electronic components. The interior temperature of an enclosure can be reduced by channelling cooler filtered outside air into the enclosure, thus expelling heated internal air. The resulting airflow prevents formation of localised hot pockets in installations and protects electronic components from overheating.
To meet the needs of increased airflow and quick installation, Stego has launched an innovative range of filter fans with enhanced features. Available in the UK from OEM Automatic, the Filter Fan Plus series uses a new airflap-outlet technology for the air outlet and thus reaches a high degree of airflow. As with conventional filter fans, a filter fan with filter mat is located in the lower part of the enclosure and draws air from the outside. The air rises to the top of the enclosure, cooling the internal space and pushing the warm interior air through the air outlet. The new airflap outlet technology eliminates the need for a filter mat for the air outlet, in turn enhancing the exiting airflow. This means that for a given cut-out in the enclosure wall, more air can be exchanged, leading to more efficient cooling. Further, the flaps stay closed when the fan is not in operation, keeping dirt out.
Another feature of the new filter fans is their ease of installation, with tool-free mounting. By pressing the built-in ratchet mechanism, the filter fan is pulled into the cabinet wall. The ratchet braces snap into place, giving the installer audible feedback that the filter fan is now installed securely, with high stability and tightness.
Depending on the application there are two filter fan systems that are available – the FPI or FPO system. The FPI system is a standard installation with a filter fan in the lower part of the enclosure which ensures that fresh air is fed into the enclosure (airflow direction ‘In’). This system consists of a filter fan and exit filter. In the FPO system, the filter fan is located in the upper area of the enclosure to avoid heat buildups (airflow direction ‘Out’). The FPO system is composed of an intake filter and exit filter fan. The Filter Fan Plus series has been designed for indoor use.
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