HJ FLB-1200 Electronic Interlocked Dual-Person Dual-Blow Air Shower

Overview

The HJ FLB-1200 Electronic Interlocked Dual-Person Dual-Blow Air Shower is an engineered entryway control system designed to maintain particulate integrity at the boundary between non-classified and classified cleanroom environments. Operating on the principle of high-velocity laminar air impingement, it removes loose particulate contamination—primarily skin flakes, textile fibers, and ambient dust—from personnel surfaces before entry into ISO Class 5–8 clean zones. Unlike passive air curtains or static barriers, the FLB-1200 actively recirculates filtered air through a closed-loop system: ambient intake passes first through a G4 pre-filter to capture coarse debris, then through an H14-grade HEPA filter (tested per EN 1822 with ≥99.99% efficiency at 0.5 µm via sodium flame method), before being accelerated through 18 stainless-steel nozzles (9 per user station) oriented at variable angles. Each nozzle delivers controlled airflow at 20–28 m/s, optimized for effective particle dislodgement without compromising operator comfort or inducing turbulence-induced re-entrainment. The unit’s structural integrity—available in electrogalvanized steel, color-coated steel, or full 304 stainless steel configurations—ensures long-term corrosion resistance and compatibility with pharmaceutical, biotech, and microelectronics manufacturing environments where cleaning validation and material traceability are mandatory.

Key Features

• Dual-person simultaneous operation with independent nozzle arrays—enabling throughput optimization without compromising decontamination efficacy
• Fail-safe electronic door interlock system compliant with IEC 60204-1 safety standards; prevents both doors from opening concurrently, eliminating cross-contamination pathways
• Microprocessor-based controller with programmable timer (0–99 s, 1-s resolution) and real-time status LED indicators for cycle progress, filter life, and fault diagnostics
• EC-type centrifugal fan with IP54 protection rating ensures stable airflow performance across voltage fluctuations and extended service intervals
• Nozzle assembly constructed from 304 stainless steel with precision-machined Φ30 mm orifices; individually adjustable for optimal human ergonomics and coverage uniformity
• Integrated particle recapture ducting returns dislodged contaminants directly to the pre-filter stage, minimizing secondary dispersion and extending HEPA service life

Sample Compatibility & Compliance

The FLB-1200 is not a sample analysis device but a critical environmental control component within validated cleanroom infrastructures. It supports compliance with ISO 14644-1 (airborne particulate cleanliness classes), ISO 14644-3 (test methods), and national standards GB/T 25915.1–2021 and GB 50073–2013. Its construction materials meet USP and EU GMP Annex 1 requirements for non-shedding, non-porous surfaces suitable for Grade A/B environments when installed as part of a holistic contamination control strategy. Electromagnetic interlock logic satisfies FDA 21 CFR Part 11 data integrity prerequisites when integrated with facility-wide access logging systems. The unit undergoes factory-certified airflow visualization testing (smoke wire or PIV verification available upon request) to confirm laminar sweep patterns and velocity uniformity across all operational modes.

Software & Data Management

The FLB-1200 operates via embedded firmware with no external software dependency. However, its RS-485 Modbus RTU interface enables seamless integration into Building Management Systems (BMS) or Manufacturing Execution Systems (MES) for centralized monitoring of cycle counts, door event logs, and filter replacement alerts. Optional Ethernet gateway modules support OPC UA protocol translation for alignment with Industry 4.0 digital twin architectures. All interlock events—including forced door override attempts, timeout failures, or power interruption recovery—are timestamped and stored locally for ≥30 days, satisfying GLP audit trail requirements per OECD Principles of Good Laboratory Practice.

Applications

• Pharmaceutical aseptic processing suites requiring personnel gowning validation prior to Grade A isolator access
• Semiconductor fabrication cleanrooms where sub-micron particle control is essential for photolithography yield assurance
• Cell therapy and mRNA vaccine production facilities adhering to ATMP (Advanced Therapy Medicinal Product) regulatory frameworks
• Medical device assembly lines governed by ISO 13485 and FDA QSR 21 CFR Part 820
• Research laboratories conducting nanomaterial handling or ultra-low-bioburden microbiological studies

FAQ

Does the FLB-1200 meet international cleanroom certification requirements?
Yes—it is engineered to support validation against ISO 14644-1, ISO 14644-3, and national equivalents including GB/T 25915.1–2021. Final certification requires site-specific testing by an accredited third-party body.
Can the unit be integrated into existing facility access control systems?
Yes—via its native Modbus RTU interface or optional Ethernet gateway, enabling synchronization with card readers, biometric terminals, and central security databases.
What maintenance intervals are recommended for filters and mechanical components?
Pre-filters require replacement every 3–6 months depending on ambient dust load; HEPA filters are rated for 5–7 years under continuous operation with scheduled pre-filter maintenance. Fan motor and interlock solenoids are rated for ≥50,000 cycles.
Is stainless steel construction necessary for GMP compliance?
Not universally—but full 304 stainless steel is strongly recommended for Grade A/B areas due to its resistance to disinfectant corrosion, ease of surface residue verification, and absence of paint chipping or polymer degradation risks.
How is airflow uniformity verified during commissioning?
Per ISO 14644-3 Annex B, airflow mapping is conducted using thermal anemometers or constant-temperature hot-wire probes at defined grid points across the nozzle plane, with acceptance criteria of ±15% velocity deviation from nominal setpoint.