AUCMA AXD Series Medical-Grade Plasma Air Disinfecting System

Overview

The AUCMA AXD Series Medical-Grade Plasma Air Disinfecting System is an engineered solution for continuous, real-time air purification in clinical, laboratory, and controlled environment settings. Unlike UV-C or ozone-based systems, the AXD platform employs low-temperature, non-thermal plasma technology—specifically dielectric barrier discharge (DBD) plasma—to generate reactive oxygen and nitrogen species (RONS), including atomic oxygen (O), hydroxyl radicals (•OH), superoxide (O₂⁻), and nitric oxide (NO). These short-lived, highly oxidative agents inactivate airborne microorganisms—including bacteria, viruses, fungal spores, and bioaerosols—through irreversible oxidation of membrane lipids, proteins, and nucleic acids. Critically, the system operates safely in occupied spaces: plasma generation is fully enclosed within the unit’s reaction chamber, with no measurable ozone emission above 0.02 ppm (well below WHO and OSHA occupational exposure limits), and no UV radiation leakage. Designed to meet stringent requirements for healthcare-associated infection (HAI) prevention, the AXD Series supports sustained air exchange rates aligned with CDC/ASHRAE Guideline 170–2021 for healthcare ventilation and air cleaning.

Key Features

• Three installation configurations: ceiling-mounted (for integrated architectural deployment), wall-mounted (space-efficient for corridor or procedure room use), and mobile cabinet (with casters and battery-backed operation for rapid repositioning during outbreak response or facility maintenance)
• Multi-stage air treatment path: pre-filter → high-efficiency molecular filter (activated carbon + modified zeolite) → DBD plasma reaction module → negative ion emitter (2–5 × 10⁶ ions/cm³ output)
• Occupied-space certified operation: validated per GB 28232–2020 Annex C for human safety under continuous 8-hour exposure
• Intelligent operational logic: cumulative runtime tracking, auto-alert for filter replacement (based on airflow resistance delta), scheduled disinfection cycles (up to 7-day programmable calendar), and dual-control interface (front-panel keypad + IR remote)
• Robust mechanical architecture: cold-rolled galvanized steel housing (Z275 coating, ASTM A653 compliant), IP20 ingress protection, flame-retardant internal wiring (UL 94 V-0 rated)
• Modular service design: plasma module, molecular filter, and fan assembly are independently replaceable without tools; mean time between failures (MTBF) > 12,000 hours

Sample Compatibility & Compliance

The AXD Series is validated for use in ISO Class 7–8 cleanrooms (per ISO 14644-1), biosafety level 2 (BSL-2) laboratories, hospital isolation rooms, and outpatient diagnostic centers. It complies with Chinese national standards GB 28232–2020 (Technical Requirements for Plasma Air Disinfectors) and YY/T 1808–2021 (Performance Requirements for Medical Air Disinfectors), including microbial reduction efficacy ≥ 99.9% against Staphylococcus aureus, Escherichia coli, Candida albicans, and MS2 bacteriophage (tested per ISO 15714:2019 aerosol challenge protocol). The system supports GLP/GMP-aligned documentation: all operational logs—including start/stop timestamps, cycle duration, error codes, and maintenance alerts—are stored locally with timestamped export capability (CSV format) for audit readiness. While not FDA-cleared as a medical device (as classified under 21 CFR Part 880.6500), it meets IEC 60601-1 general safety requirements for electrical medical equipment when used in healthcare facilities.

Software & Data Management

The AXD Series does not require external software or cloud connectivity. All configuration and monitoring occur via embedded firmware (v3.2+), accessible through the front-panel LCD or IR remote. Operational data—including total runtime, number of disinfection cycles completed, filter service interval countdown, and fault history (e.g., “Plasma Arc Fault,” “Filter Pressure Drop Exceeded”)—are retained in non-volatile memory for ≥ 18 months. Data export is performed via USB-A port (FAT32 formatted drive); no proprietary drivers or vendor-specific applications are needed. Audit trails comply with ALCOA+ principles: attributable, legible, contemporaneous, original, accurate, complete, consistent, enduring, and available. For integration into centralized BMS environments, optional dry-contact relay outputs (NO/NC) support status signaling (e.g., “Disinfection Active,” “Maintenance Required”).

Applications

• Continuous background air disinfection in microbiology labs, PCR preparation areas, and cell culture suites where personnel occupancy precludes intermittent UV or chemical fogging
• Supplemental air cleaning in HVAC-underserved zones: elevator lobbies, nurse stations, specimen collection rooms, and waiting areas with limited mechanical ventilation
• Rapid-response deployment during suspected airborne pathogen events (e.g., influenza, RSV, or SARS-CoV-2 variants), particularly where fixed infrastructure upgrades are impractical
• Odor and VOC mitigation in histopathology labs (formaldehyde, xylene), animal housing facilities, and waste processing corridors
• Pre-procedural air conditioning in endoscopy units and dental operatories to reduce aerosolized bioburden prior to patient entry

FAQ

Can the AXD Series be operated while personnel are present in the room?

Yes. It is certified for continuous occupied-space use under GB 28232–2020, with verified ozone emissions <0.02 ppm and no UV leakage.
What is the recommended maintenance schedule for the molecular filter?

Filter replacement is triggered automatically at 6,000 hours of cumulative operation or when static pressure drop exceeds 85 Pa—whichever occurs first.
Does the system provide third-party validation reports for microbial reduction claims?

Yes. Full test reports from CNAS-accredited laboratories (e.g., Shanghai Institute of Measurement and Testing Technology) are available upon request, including ISO 15714-compliant aerosol challenge data.
Is the plasma module field-replaceable without technician support?

Yes. The module is tool-free and hot-swappable; full replacement takes <90 seconds and requires no recalibration.
How is compliance with ISO 14644-1 Class 8 environments demonstrated?

By maintaining ≥ 15 air changes per hour (ACH) in representative 30 m² rooms (1500 m³/h model), verified via tracer gas decay testing per ISO 14644-3 Annex B.