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  5. EscoPharma - Cleanroom Air Shower

EscoPharma - Cleanroom Air Shower

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Esco Air Showers (EAS) are self-contained chambers installed strategically at entrances to cleanrooms and other controlled environments. They minimize particulate matter entering or exiting the clean space to mitigate the risk for cross-contamination. Personnel and materials entering or exiting the controlled environment are “scrubbed” with ULPA-filtered air by high-velocity air jets running at 18-30 m/s (3543-5906 fpm). Contaminated air is then drawn through the base within the unit, filtered and recirculated.

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Esco is the pioneering company for the manufacture and construction of cleanroom air showers with different applications in the following areas:

  • micro-electronics
  • semiconductors
  • pharmaceutical
  • spray painting
  • laboratory animal research
  • food markets

With greater than 40 years of experience in the industry, Esco is consistently manufacturing, and supplying reliable air showers and clean air solutions to reduce the potential for cross-contamination, and enhance cleanroom integrity.

High-velocity air jets

High-velocity shower jets running at 18-30 m/s to ensure efficient scrubbing action to remove particulate matter

Stainless steel nozzles

Permanently lubricated direct drive centrifugal blowers used in conjunction with stainless steel air nozzles

Programmable operation

Operating modes can be programmed in the field

Reliable microprocessor control system

Microprocessor controller supervises all functions

ULPA filtration

The typical efficiency of ULPA filter is > 99.9995% at 0.3 micron particles.

Pre-filtration

A disposable prefilter with 85% arrestance extends the life of the main filter.

Emergency buttons

An emergency stop button is mounted on both sides of the shower

Indicator lights to signal door status

Indicator lights mounted on both sides of the exterior of the air shower to regulate traffic flow, in and out of the cleanroom.

Durable doors

Heavy-duty, durable doors with glass windows to permit visibility.

Powder-coated steel construction

The air shower is constructed of electrogalvanized steel sheets with an abrasion-resistant oven-baked powder coated finish. (Optional: Stainless steel 304 construction)

Uniform lighting

Light diffusers ensure uniform lighting throughout the chamber

  • Air is forced by the blower(s) through ULPA filter(s) which are 99.9995% efficient against particles of 0.3 microns.
  • Filtered air is ejected through nozzles at high velocities into the chamber. These turbulent air streams disperse particulate matter on all surfaces.
  • Dispersed particulate matter migrate with the air stream towards the lower areas in the air shower chamber. Air enters the blower supply plenum through pre-filter(s) installed at the base of the chamber.
  • The air is continuously filtered and recirculated. The air shower is a self-contained device and does not exchange air with the environment it is placed in.

OPERATING SEQUENCE

Unlike conventional air showers which are delivered with a fixed operating sequence, the Esco Cleanroom Air Shower’s operating sequence may be selected from three pre-programmed sequences:

One-Way
(Left Illustration): Personnel may enter the controlled environment but not exit through the air shower. At the idle state, the clean side door is locked while the grey side is unlocked. This mode of operation is useful for controlling traffic patterns in and out of the controlled environment.

Two-Way One-Way
(Middle Illustration): Personnel may enter or exit the controlled environment through the air shower. The air shower program is able to detect if the person is entering or exiting the controlled environment via door sensors and a time-sequenced control.

Two-Way
(Right Illustration): Personnel may enter or exit the controlled environment through the air shower. In both directions, the air shower is activated. This mode of operation is useful in pharmaceutical and lab animal research applications to prevent the egress of hazardous substances and allergens from the controlled environment.

  • Disposable prefilter
  • SS air nozzles
  • Reduced vibration
  • Energy Efficient
  • Microprocessor controller
  • High velocity shower jets
  • Emergency stop buttons