Electric Lift Pass Box LELP-A11

Labtron supplies premium models of Electric Lifting Pass Box LELP-A11.These units feature a dual-stage filtration system: a G4/EU5 pre-filter captures 90–95% of particles ?5?µm, while an H13/H14 HEPA filter removes ?99.97% at 0.3?µm. The motorized blower draws air through the filters and distributes it uniformly across the chamber at ~0.45?±?0.05?m/s, maintaining laminar flow and meeting ISO Class-5 standards. A magnehelic gauge continually monitors differential pressure, signaling filter performance status. Filters are easily accessible through service panels for quick replacement, preserving airflow integrity and contamination control.

Labtron supplies premium model of Electric Lift Pass Box LELP-A11.During a transfer cycle, the interlock system ensures one door opens only after the other closes, minimizing pressure disruption. The blower activates automatically when a door opens, creating positive pressure to prevent external particle ingress. Dual pressure sensors detect any deviations, triggering alarms if thresholds are breached. This dynamic control preserves room segregation even during frequent transfers and supports continuous cleanroom compliance.

Labtron supplies premium models of Electric Lift Pass Box LELP-A11.A centrifugal motor blower draws ambient clean air through the HEPA filter, delivering uniform airflow-typically 0.45?m/s-across the work surface. Velocity is maintained via balanced, statically and dynamically aligned fans. Flow is monitored continuously by pressure gauges and controlled via VFD (optional), ensuring low-velocity clean air that prevents turbulence and particle resuspension.

Labtron supplies Electric Lift Pass Box LELP-A11.State-of-the-art models employ microcontroller-based control panels that manage interlocks, blower activation, UV sterilization, door time delays, and alarms. These systems typically introduce a 2–4?second delay between door cycles, deactivate UV lamps when doors are open, and log UV lamp usage. They feature buzzers and LED indicators to alert door hold or blower malfunctions, ensuring safe and validated operation through every cycle.

Labtron supplies premium models of Electric Lift Pass Box LELP-A11.Modules often include DOP/PAO test ports for real-time HEPA integrity verification, digital differential pressure gauges with alarm functions, and UV hour meters for tracking sterilization cycles. Optional door hold alarms and clean-down timers aid procedural compliance. Controllers may also support remote PLC integration for centralized monitoring and audit-ready record keeping—vital for GMP, ISO, or FDA-regulated operations.

It employs a HEPA filtered airflow system where a built-in fan recirculates air vertically or horizontally through filters, maintaining ISO Class 5 cleanliness inside the chamber. When the lift activates, purified air enters the compartment to dilute particles from transferred items and returns via a grille—creating a continuous clean-air cycle. Dual-stage filtration (pre-filter + H13/H14 HEPA) removes both large and fine contaminants. Differential pressure monitoring ensures filter performance, while the air velocity is typically maintained. These continuous airflow dynamics keep the internal chamber sterile during the lifting process.

The unit features electronic or electromagnetic interlock mechanisms that strictly prevent both doors from being opened simultaneously, effectively stopping cross-contamination. Fan operation locks the doors, and opening a door usually triggers an automatic UV shut-off and LED-visual indicators. In addition, digital or analog differential pressure gauges with alarm thresholds alert when pressure deviates, signalling filter clogging or malfunction. Audio-visual alarms can also be set to notify operators of extended door openings or blower issues, ensuring compliance with ISO/GMP protocols.

Regular maintenance includes replacing the pre-filter every 1 to 6 months and the HEPA filter every 6 to12 months, depending on usage and particle load. After filter replacement, integrity tests using particle counters or DOP/PAO ports ensure there’s no leakage. Periodic airflow visualization (e.g., smoke test) confirms unidirectional flow. Daily or monthly differential pressure checks validate proper ventilation performance. UV-C lamps and internal chamber surfaces are cleaned weekly using approved disinfectants. Power components should be handled cautiously, with non-professional personnel restricted from circuit board access.

Yes—dynamic pass boxes are engineered to support transfers between various ISO-grade environments (e.g., non-clean to ISO 5 or C to B), acting as airtight airlocks. Some models are available in explosion-proof/ATEX-rated variants for use with combustible or hazardous materials. The airflow system is designed with variable-frequency drives to maintain consistent differential pressure, even if both doors are opened briefly. Configuration options include single-, double-, L-shaped, or multi-sided designs tailored for compartment-specific layout. Accessories like UV-C disinfection, intercom systems, and touchscreen panels increase flexibility across pharmaceutical, biotech, and industrial applications.

Equipped with differential pressure gauges (analog /digital), the pass box continually monitors HEPA filter loading and airflow performance—providing data for maintenance logs. DOP/PAO test ports allow onsite filter integrity testing, essential for GMP validation. Door completion timers and UV-hour meters track usage cycles and UV exposure durations, enabling routine documentation. Control systems often include password-protected or touchscreen interfaces for secure adjustments. Together, these systems support full lifecycle documentation—DQ/IQ/OQ/PQ protocols—and help satisfy audit requirements under ISO 14644, IEST, US cGMP, and WHO guidelines.