» Air Shower
Air Showers Specifications
Air Showers clean micro particles off
personnel and equipment as they enter or exit a cleanroom. Upon exit,
cleanrooms are envelope sealed when the unit automatically switches into an
airlock. They can also be used to remove hazardous contaminate from
personnel when exiting facilities
Not to be ignored is the psychological impact a cleanroom air shower
creates: Personnel are reminded with every passage that they are entering a
controlled environment, while prospective clients are assured of your
quality control standards when they enter your facility.
- This generic air shower design
specification describes a prefabricated modular enclosure to be used for
removing surface particles from personnel prior to entering a Cleanroom
- The Air Shower shall be a high
velocity, low pressure type system in accordance with Federal Standard
209E and Air Force Tech Order 00-25-203.
- The Air Shower will provide
normal entrance to and exit from a contamination controlled area.
- The workmanship and materials
shall be professional quality and esthetically pleasing.
- The Air Shower shall be assembled
and tested in the factory, then disassembled for shipping and field
Air Shower Construction
- Air Shower shall be made in
different type material like ms painted, SS- 304,SS-202,AL Etc
- The Air Shower shall be a
completely self contained unit, equipped with air filtration systems,
blowers, motors, controls, solid-state programmable microprocessor,
interlocking doors, lighting, and pre-wired electrical panel.
- All exterior and interior Air
Shower surfaces shall be completely sealed with materials compatible
with Class 1/10 cleanroom construction standards.
- All visible surfaces shall be
covered with high-pressure, white plastic laminate. Trim shall be clear
anodized aluminum. Optional: Clad all visible surfaces with .040"
clear anodized aluminum.
- Air Shower interior air duct
surface shall be completely covered with plastic laminate, Melamine
laminate, clear anodized aluminum, or other suitable surface covering
compatible with Class 1/10 Cleanroom environment.
- Doors made from clear anodized
aluminum and .25" tempered glass shall be used at the entry and
exit of Air Cleanroom envelope.
- Adjustable air nozzles shall be
white plastic construction sized and spaced to provide average 7,000 fpm
air flow at the face of the nozzle.
- Return air registers shall be
white baked enamel steel grilles, built into the Air Shower system's
- Interior ceilings shall include
an appropriate number of air nozzles and a fluorescent light, or HEPA
filters and lighting above a protective grille (on models with laminar
- Pre-drilled and capped sprinkler
penetrations shall be provided.
- HEPA filters capable of removing
99.99% of dust particles to 0.3 microns in size (optional: ULPA 99.9995%
on .12 micron) shall be used. Filter access is from above unit, or as
- Some cleanroom air shower design
specifications include optional Constant Purge ceilings and shall have
fan-powered HEPA filters mounted above a polystyrene egg crate diffuser
panel. The Constant Purge feature shall add 6" to the standard Air
- Replaceable pre-filters of 30%
efficiency shall be used to maximize life of the absolute filters and
shall be accessible from Air Shower interior, within return air
- A Programmable Logic Controller
(PLC) shall be used to control the sequence of operation of the
cleanroom Air Shower.
- An Emergency Off button (EMO)
shall be located inside the Air Shower in a conspicuous location.
- Activating the switch shall cause
the cycle to immediately end, and release all interlocks. Lights shall
- Door sensors shall be 24 volt DC
magnetic reed switches. Door interlocks shall be 24 volt, located in the
doorjamb at the top of the entrance and exit ways. All locks shall
automatically release upon loss of power or when the (EMO) button is
Uses of Air Shower in different type manufacturing
- Precision Manufacturing.