Fan Filter Unit
Fan filter unit (FFU) is a motorized air filtering equipment. It is used to supply clean air to clean rooms, laboratories, medical facilities, data center, semi-conductor manufacturing units or microenvironments by removing harmful airborne particles from re-circulating air. The units can be installed within the system’s ceiling grid, walls or floor mounted . Large clean rooms require a proportionally large number of FFUs, which in some cases may range from several hundred to several thousand. Often contain their own pre- filter, HEPA filter and internally controllable fan air distribution
Applications of Fan Filter Unit
Fan Filter Units are used in critical applications such as healthcare, pharmaceutical compounding, data centers or microelectronics manufacturing. The high efficiency motor is designed to overcome the static pressure of the integrated hepa filter, making FFUs ideal for retrofit applications where the air handler is not able to provide the required static pressure. With blower speed controller as standard feature can save around 5 to 7% operational costs.
Operations of Fan Filter Unit
- A motorized Fan Filter Unit (FFU) is designed to create an atmosphere of
particle free air in the area located directly in the airstream. - Removal of the pre-filter on top of the unit allows access to the fan assembly. The motor is internally thermally protected against overload.
- A motorized fan is used to pull air through the pre filter and push through hepa filter for distribution to rooms or enclosed work stations such as assembly tables.
- HEPA filters remove particles 0.3 um or larger at 99.99% efficiency, while ULPA filters remove particles 0.12 um or larger at 99.999% efficiency.
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