Clean-Hoods design is based on Moorfields fan filter units that are the backbone
of the successful Clean-Tent range of products.
The Fan filter unit
consists of an epoxy coated steel air box housing a centrifugal fan and air
dampers /baffles. At the back of the box is a 400mm square spigot containing pre
filter and ( if required) flange connection for a supply air duct. On the front
of the unit is attached the final filter. This determines the quality of the air
supplied. The filter is attached to the frame via a neoprene seal and
siliconed into place. H14 Class 100 HEPAs are fitted as standard but other
options are available upon request.
The fan is controlled by a
variable speed rotary dial and on/off switch mounted on the high level dado
service duct of the internal booth ( vertical model only). The fan can provide
up to 1100 m3 /hr through the filter at the industry standard 0.45
m/sec face velocity. This ensures that the air change rate at the work station
is very high for the specified Class specification.
The fan filter unit is
mounted on top of a 25mm box section steel frame. The frame is enclosed on three
sides with clear acrylic sheet, designed to allow as much ambient light into the
work station as possible.
An air dam maintains a
constant positive pressure relative to ambient at the orifice face velocity of
circa 0.5 M/Sec
Options include - free
standing stainless steel workbench, electrical pack, front face tri-fold
valence, variable speed controller and differential pressure gauge.