OT Clean Air Canopies
16Pages

Optimized Operating Theatre Clean Air Canopies Type ULA.4 and Type FFA.4 Weiss Klimatechnik GmbH Geräte- und Anlagenbau

Optimized OT Clean Air Canopies Your Partner for Tomorrow's OT Air Supply Systems For over four decades, the Weiss company has been setting research and development standards in air-conditioning systems for the most demanding applications. In the seventies and eighties, the Weiss supported air nozzle canopy became a synonym for OT canopies. In the eighties, Weiss implemented laminar flow solutions. In 2007, Weiss is setting standards in the development of OT air-conditioning systems again, with the optimized ULA.4 and FFA.4 canopies. Weiss OT clean air systems are functioning safely and...

Low-turbulence Displacement Flow New guidelines emphasized the importance of low turbulence in this respect. In order to ensure the necessary air purity in operating theatres or other surgery rooms with strict hygienic requirements, very high volume flows of air with the necessary degree of purity are required. Energy-efficient low-turbulence displacement circulating air canopies can be employed for this purpose. Weiss OT Clean Air Canopy. Photo courtesy of the pediatric cardiac center of the Justus Liebig University hospital, Gießen, Germany

ULA.4 – The Optimized Low-tur-bulence Circulating Air Canopy The ULA.4 belongs to the new generation of OT clean air canopies. It is installed as a unit inside the suspended ceiling of the OT, and consists of an air outlet element (single-layer, or doublelayer or differential flow if required, polyester fabric), the H13 (or H14) HEPA filters to DIN EN 1822 at the ends, an anodized aluminum or stainless steel plenum with sound absorbers, and air circulation modules. The air circulation modules contain, in the direction of flow, a circulating air intake (stainless steel microfabric), an F7...

Suspended ceiling System unit Schematic diagram of the mode of operation of an ULA.4 clean air canopy in an OT . The protection zone (the entire aseptic surroundings of a surgical operation, including the materials and instruments tables, a free zone for clean room hand-over of sterilized material and the OT team in sterile garb) is shielded by a sufficiently large low-turbulence displacement air flow. Advantages of the New ULA.4 Circulating and fresh air is mixed in the air circulation module before entering the canopy plenum Variable frame system with maximum dimensional stability Can be...

Size of Discharge Area of ULA.4 Canopy Unit The size of the ULA.4 canopy's discharge area depends on the functional requirements of the operating theatres. The operating table, the instrument tables, and the OT personnel in sterile garb form the sterile zone, which must be covered by the discharge area. This sterile zone varies in size according to the responsibilities of the clinic or hospital. Since most OTs are multifunctional, a discharge area of at least 3.0 m by 3.0 m is advisable. The necessary size of discharge area is best determined jointly by the users and hygiene specialists....

Height pressure chamber Height circulating No. of nozzles H (mm) air module H1(mm) X/Y = 300 mm (for two-lamp Trilux luminaire) or 416 mm (for three-lamp Trilux luminaire)

FFA.4 – The New Optimized Filter Area Canopies FFA.4 canopies feature full-surface HEPA filters installed horizontally at the ends, which are located directly ahead of the fabric diffusers (single layer or double layer or differential flow if required, polyester fabric). The horizontal HEPA filter area and the fabric provide a uniform diffusion of the air. The new FFA.4 is one of the optimized OT clean air canopies. It is employed mainly where there is no room available for air circulation modules, due to the size of the OT. As in the ULA.4 circulating air canopy, in the FFA.4 the clean,...

Suspended ceiling System unit Schematic diagram of the mode of operation of an FFA.4 clean-air canopy in an OT . The protection zone (the entire aseptic surroundings of a surgical operation, including the materials and instruments tables, a free zone for clean room hand-over of sterilized material and the surgical team in sterile garb) is shielded by a sufficiently large low-turbulence displacement air flow. Advantages of the New FFA.4 Gauging heads for measuring test aerosol in unconditioned air positioned in clear view and centrally Variable frame system with maximum dimensional stability...

Clean air volume flow (m3/h) acc. to DIN 1946 T41) Clean air volume flow (m3/h) acc. to HTM 03-012) Without slatted flap; with slatted flap, nozzle width on request Size 20/20 and up two-part, size 32/32 and up four-part Other unit sizes available on request. We reserve the right to make technical improvements. Type code (example) FFA.4 = Height of clean air canopy (450 mm) = Length of clean air canopy bay (2,269 mm) = Width of clean air canopy bay (1,659 mm) FFA = Model designation for filter area canopy

Canopy height Nozzle height

Connection Details Canopy Connection Variant: OT canopy, media bridge, lighting, circulating air module Bare ceiling Media column Media beam Canopy Connection Variant: OT canopy, skirting, lighting, suspended ceiling Bare ceiling

FFA.4 + Circulating Air Wall Module(s) An alternative to the circulating air canopy with circulating air modules suspended from ceiling Circulating air wall modules can be mounted in front of the wall, as an integral component of a lightweight partition wall, or in the adjoining room. Advantages of installation outside the OT: Reduction of sound pressure level, since fans are outside the OT. Servicing and maintenance work can be done from outside the OT. Optional use of a dry cooler is possible.

Perfectly Matched Components Complete Solution with all Components With its OT clean air canopies, Weiss offers the complete system from wall to wall, with all the associated components. Medical supply system as an ultra-modern media bridge Air-guide skirting of laminated safety glass Suspended ceilings of painted steel sheeting or other materials that meet the hygiene requirements Exhaust air extraction via our OT exhaust air cabinets, type OPAS, including our fluff separators, for installation in corners or as an integral component of a lightweight partition wall Hygienic recessed...