Air Showers

for Sterile and Particles Controlled Areas

2010-07-07 20-01-06_0203


1-  Silent Features about  HENGWEI CLEAN ROOM AIR SHOWER:


  • Completely self-contained, pre-wired, fully equipped Air Shower/Tunnel systems help solve decontamination problems
  • Modular design lets you order a system to suit your cleanroom
  • (AAF OR CAMFIL) HEPA filter/blower modules (rated 99.99% efficient @ 0.3 micron particles) wash personnel with Class 100 air to dislodge and remove particles
  • Solid-state microprocessor panel provides programmable control over access door operation
  • Interlocking doors minimize contamination, release automatically in the event of power failure
  • Fluorescent lighting is housed in the ceiling for minimal turbulence (OPTION)
  • Available in white epoxy-finished CR steel, stainless steel, or plastic laminate to meet various cleanroom requirements
  • Variety of sizes and door configurations
  • Economical to operate, easy to maintain
  • System options include HEPA-filtered ceiling, ionized grid, and safety glazing


2- Facts:


HENGWEI Cleanroom Air Showers are manufactured to be used for removing surface particles from personnel prior to entering a Cleanroom area. The air shower is a high velocity, low pressure type system, providing a normal entrance to and exit from a contamination controlled area. While the operators and materials are of a specific quality, the air showers are ultimately engineered to incorporate an artistically pleasing design to fit the general atmosphere of the cleanroom specifications. All HENGWEI Air Showers are assembled and tested directly in the factory for quality control purposes, and then subsequently disassembled for shipping and field assembly.

Each assembled Air Shower is a completely self-contained unit, equipped with air filtration systems, blowers, motors, controls, a solid-state programmable microprocessor, interlocking doors, lighting, and a pre-wired electrical panel. Although HENGWEI offer a wide and varied range of standard Air Shower design packages, we can also customize these units to meet your special needs. Typical configurations include, but are not limited to, straight thru patterns, right turn patterns; left turn patterns, U-shaped patterns and T-shaped patterns. All units are carefully packaged for transportation, and are shipped by recognized carriers at the lowest applicable rate

HENGWEI Air Showers are directed to ensure that all exterior and interior surfaces are completely sealed with materials compatible with class 1/10 Cleanroom construction standards. All visible surfaces are covered with high-pressure, white plastic laminate. Trim is constructed of clear, anodized aluminum, or complete SS304 panels. All interior duct surfaces are completely covered with plastic laminate, melamine laminate, clear anodized aluminum, or complete SS304 sheets, or other suitable surface coverings compatible with class 1/10 Cleanroom (or ISO 4) construction standards. Doors are also made from clean, anodized aluminum (or SS304) and tempered glass used at the entry and exit of the Air Shower. Heavy duty commercial door closers, door seals, and door sweeps are used to maintain the seal of the Cleanroom envelope. Adjustable air nozzles are constructed from white plastic (or SS304). Return air registers are of white baked enamel steel grilles, built into the Air Shower wall system. Interior ceilings include an appropriate number of air nozzles and a fluorescent light (Optional), or, HEPA filters and lighting above a protective grille (on models with laminar flow ceilings). Also provided are predrilled and capped sprinkler penetrations.

The Filtration System is comprised of HEPA filters (AAF or CAMFIL) capable of removing 99.99% of dust particles to 0.3 microns in size. Filter access is from above unit, or as specified. Replaceable pre-filters of 30% efficiency are used to maximize life of the absolute filters, and are accessible from the Air Shower interior, within return air grille(s).

The Air Shower Electrical System is comprised of a prewired electrical panel which contains the major electrical components, such as: rotary disconnect switch, transformers, fuses, motor starter, overload, terminal strips, ground bus, and programmable logic controller. Further included is a single-point connection of 220 volt/3 wire service or 380 volt/3 wire service which serves as the only source of power required by the buyer, as well as a paddle-wheel type high pressure blower, sized to provide 7,000 fpm velocity at the face of the air nozzles. A rotation indicator is permanently attached to the blower housing. All lighting is 220 volts, and all wiring methods comply with the National Electrical Code.

For the Control System, a Programmable Logic Controller (PLC) is used to control the sequence of operation of the Air Shower. An Emergency Off Button (EMO) located inside the Air Shower is mounted in a conspicuous location. Activating the switch causes the cycle to immediately end, and release all interlocks. Lighting is set to remain on. Door sensors are set at 24 volt DC magnetic reed switches, and door interlocks are 24 volt, located in the door jamb at the top of the entrance and exit ways. All locks are automatically set to release upon loss of power, or when the Emergency Off Button is pressed.

All our Air Showers are inspected prior to shipping by factory quality assurance personnel. Units are set up square and plumb on a level surface in the factory test area, and any necessary adjustments to doors and door seals will be made to project satisfaction. Sound levels, velocity, vibration, cleanliness, trueness to size, and integrity of design are checked prior to disassembly and crating. After disassembly for shipment, all components are marked clearly for field installation. A floor plan, assembly instructions, and an electrical schematic are provided for each Air Shower.

3- Certificates came with HENGWEI Air Shower:


–         Certificate of SS304 sheets used in the Air Shower Construction

QA Pass for HEPA filters: Efficiency Leak test and Particle distribution at particle size 0.1-0.2 m

–         Light intensity Certificate

–         Noise Certificate

–         Air Blower Performance Certificate

–         Other Specific Components certificates

4- Drawings :


–         Air Shower Layout interior/exterior

–         Electrical diagram

–         Mechanical diagram

–         HEPA filter

5- Documentation :


–         Operation manual/Maintenance manual/Cleaning procedure

–         FAT/DQ/IQ/OQ

–         Shipping Documents: Invoice/Packing list/Certificate of Origin/AWB/ISO.

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