Electric Lift Pass Box LELP-A13

Labtron supplies premium models of Electric Lifting Pass Box LELP-A13.These units feature a dual-stage filtration system: a G4/EU5 pre-filter captures 90–95% of particles while an H13/H14 HEPA filter removes. The motorized blower draws air through the filters and distributes it uniformly across the chamber, 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-A13.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-A13.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 advanced models like Electric Lift Pass Box LELP-A13.Apart from visible alarms and lights, the system includes audio beeps for door-hold, blower failure, or UV lamp issues, as well as vibration sensors in motor-blowers to detect bearing wear. Magnehelic gauges may include alarms if the pressure differential crosses set thresholds. Blower current sensing can indicate motor failure or filter clogging. Some models even send remote alerts via PLC systems. These feedback systems enable maintenance without opening the chamber or waiting for visual cues.

Labtron supplies premium electric lift pass box LELP-A13. Manufacturers offer a range of standard interior sizes and can produce L-shaped, multi-door, or stacked two-floor configurations. Wall-, floor-, and flush-mount styles adapt to various cleanroom partitions. Accessories like intercoms, pressure gauges, UV disinfection, DOP ports, and flame-proof fittings can be integrated. Blower types range from AC to EC/DC with variable-speed drives. For unique applications-like drum transfers or high-throughput labs-custom dimensions and features are routinely engineered to order.

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.