Cleanroom Filtration

HEPA and ULPA Cleanroom Filtration

The filtration system is the heart of a cleanroom. The filters are designed to filter the particulates in the air down to sub-micron sizes. The “standard high efficiency particulate air” (HEPA) filter will filter the air down to 0.3 microns at an efficiency or 99.975%. The “ultra low particulate air (ULPA) filter” will filter the air down to 0.12 microns at an efficiency of 99.999%.

Cleanroom filters are offered in a fan powered module or a ducted module. The fan powered module (FFU) is supplied in a painted steel or aluminum housing, most common being 2’ x 4’ but also available in 2’ x 2’ and 4’ x 4’sizes. The unit is powered by an energy efficient motor blower, backward curved impeller, single phase, permanent split capacitor type motor blower assembly with thermal overload protection. Units are available in 115 Volt (60 Hz), 208-230 Volt (50/60 Hz) and 277 (60 Hz). The FFU is supplied with 30/30 prefilters. With proper pre-filtration and care theHEPA/ULPA filter will last many years. When servicing is required HEPA/ULPA filters are replaced by removing the housing from the ceiling tee grid, unbolting the filter from the housing and attaching a new one.Some processes and regulations require that the HEPA/ULPA filter be replaced on a more frequent basis. Where this is the case we offer a “room side replaceable” option where the housing does not have to be removed from the ceiling tee grid to replace the filter.The filter can be removed from inside the cleanroom by unhinging the protective screen, unscrewing the filter assemble and replacing it. There are also times when the filter units will populate the majority of the ceiling and there will not be enough room for lights. If this is the case lighting can be built into the filter housing.

We also offer a wide variety of ducted (terminal) filters that can meet the exacting requirements of microelectronics assembly, pharmaceutical production, laboratories, hospitals and other industries. These units require a central air handling system capable of overcoming the static pressure of the HEPA / ULPA filter. The terminal filter is available in the standard or room side replaceable styles and sizes.

We are a distributor for Clean Rooms International filtration products.

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