HJ AAS-700As Stainless Steel Deep-Profile Automated Single-Person Air Shower

Overview

The HJ AAS-700As Stainless Steel Deep-Profile Automated Single-Person Air Shower is an engineered entry-level personnel decontamination system designed for controlled environments requiring ISO Class 5–8 cleanroom compliance. It operates on the principle of high-velocity laminar air impingement—using a precisely calibrated array of stainless steel nozzles to dislodge and remove particulate contaminants (≥0.5 µm) from operator garments, hair, and footwear prior to cleanroom ingress. Unlike standard-height air showers, the AAS-700As features an extended vertical profile (height: 2,100 mm), accommodating taller personnel and enabling full-body coverage—including headgear and shoulder regions—without compromising ergonomic access or door clearance. Its dual-interlocked door control logic prevents simultaneous opening of entry and exit doors, enforcing sequential passage and maintaining pressure differentials across cleanroom boundaries per ISO 14644-3 requirements.

Key Features

• Deep-profile chamber geometry (2,100 mm height × 900 mm width × 1,200 mm depth) ensures complete vertical coverage for operators up to 195 cm tall.
• 16 precision-machined 304 stainless steel nozzles (Φ30 mm), each aligned to deliver uniform 15–20 m/s airflow at the human surface plane, validated per IEST-RP-CC003.4 air velocity mapping protocols.
• Programmable shower duration (0–60 seconds in 1-second increments) with real-time digital display and audible end-of-cycle alert.
• Redundant filtration architecture: eight 600 × 600 × 120 mm HEPA filters (EN 1822-1 H14 grade, ≥99.995% @ 0.3 µm MPPS) paired with eight 850 × 580 × 10 mm synthetic fiber pre-filters (MERV 13 equivalent) to extend main filter service life.
• Structural integrity ensured by 304 stainless steel load-bearing chassis and polyphenylsulfone-reinforced color-coated steel sandwich panels (14 kg/m³ core density), providing dimensional stability under thermal cycling and mechanical vibration.
• Integrated electrical safety: IP54-rated control cabinet, thermal overload protection, and grounded chassis compliant with GB/T 14048.1 and IEC 60947-1 standards.

Sample Compatibility & Compliance

The AAS-700As is not intended for sample processing but serves as a critical engineering control in personnel entry protocols for pharmaceutical manufacturing (ISO 13485), semiconductor fabrication (SEMI S2), biotechnology labs, and medical device assembly facilities. It complies with national and international regulatory frameworks including GB 50073–2013 (Chinese Cleanroom Design Standard), ISO 14644-1:2015 (airborne particle concentration limits), and supports adherence to FDA 21 CFR Part 211 (Subpart C – Facilities) when integrated into validated cleanroom validation packages. All materials contacting airflow pathways meet USP Class VI biocompatibility requirements for non-implantable devices.

Software & Data Management

The AAS-700As utilizes embedded microcontroller-based logic without external software dependency. Operational parameters—including total cycle count, cumulative runtime, and last five cycle durations—are stored in non-volatile memory and accessible via front-panel keypad navigation. While it does not support network connectivity or electronic data archiving, its event log meets GLP audit-trail prerequisites for manual recordkeeping (e.g., paper-based logbooks signed and dated per SOP-ENV-017). Optional RS-485 interface module (sold separately) enables integration with building management systems (BMS) for remote status monitoring and alarm relay signaling.

Applications

• Pre-entry decontamination for operators entering ISO Class 5 (Class 100) aseptic filling suites in parenteral drug manufacturing.
• Personnel air showering before accessing photolithography cleanrooms in microelectronics wafer fabs.
• Controlled access point for biosafety level 2 (BSL-2) laboratories handling low-risk recombinant DNA constructs.
• Surface particle mitigation in precision optics assembly areas where sub-micron particulates compromise lens coating adhesion.
• Supporting Annex 1 (2022) EU GMP requirements for “graded cleanroom zoning” through physical barrier enforcement and documented personnel flow control.

FAQ

Does the AAS-700As support variable air velocity control per nozzle?

No. Air velocity is fixed within 15–20 m/s range by fan static pressure and nozzle orifice design; velocity adjustment is not user-configurable.
What is the recommended maintenance interval for HEPA filters?

Under typical operation (200 cycles/week), HEPA filters require replacement every 18–24 months; pre-filters should be inspected monthly and replaced every 3–6 months based on differential pressure rise (>150 Pa across pre-filter bank).
Can this unit be installed in a negative-pressure corridor?

Yes—provided supply air is sourced from a higher-pressure clean zone and exhaust is ducted to a dedicated return plenum or outside atmosphere via balanced HVAC design.
Is third-party certification available for filter efficiency testing?

HJ provides factory test reports per EN 1822-3 (DOP penetration scan) for each HEPA filter batch; optional TÜV SÜD or SGS witnessed testing can be arranged at buyer’s cost.
What is the maximum ambient temperature rating for continuous operation?

The unit is rated for continuous operation at ambient temperatures between 10 °C and 35 °C, with relative humidity ≤80% non-condensing, per IEC 60068-2-1/2 environmental stress specifications.