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LiftMaster LM21-AFCB: Advanced Fire Control Release Device
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LiftMaster LM21-AFCB Advanced Fire Control Release Device
The LiftMaster LM21-AFCB is an advanced fire control release device designed to enhance the safety and functionality of motorized fire doors. This device integrates seamlessly with commercial electromechanical or solid-state operators, providing a reliable solution for automated fire door closure in emergency situations. Its compliance with UL 864 Revision 9 standards ensures adherence to stringent safety regulations, making it an essential component in fire protection systems.
Key Features of the LiftMaster LM21-AFCB
- UL 864 Revision 9 Compliance: Meets rigorous safety standards for fire detection and control equipment.
- Internal Battery Backup System: Ensures continuous operation during power outages, maintaining fire door functionality.
- Programmable Delay Settings: Offers selectable delay times of 10, 20, 30, or 60 seconds before door release, allowing for safe evacuation.
- Obstruction Cycling: Works with the door’s electric safety edge to reverse the door if an obstruction is encountered during closure.
- Motor Voltage Sensing: Monitors motor voltage to ensure proper operation and prevent potential malfunctions.
- Test Key Switch: Facilitates floor-level testing of the system, ensuring readiness without triggering the entire fire alarm system.
- Form C Relay Output: Provides versatile connectivity options for integration with other safety and alarm systems.
- Lower Limit Detection: Ensures the door reaches its fully closed position, maintaining the integrity of the fire barrier.
- Safety Timer: Prevents prolonged door operation, reducing wear and potential system failures.
- Diagnostic Capabilities: Features LED indicators for easy troubleshooting and system status monitoring.
- Supports Multiple Smoke Detectors: Powers up to four smoke detectors and two horn/strobes or speaker/strobes, enhancing fire detection capabilities.
- 120VAC Operating Voltage: Compatible with standard power supplies, simplifying installation and integration.
Technical Specifications
- Voltage Rating: 120VAC, 60Hz
- Standby Current: 0.20A
- Alarm Current: 0.6A
- Battery Rating: 12V 4.5Ah or 5.0Ah sealed lead-acid batteries (two required)
- Battery Standby Time: 48 hours for LM21-AFCB; 36 hours for LM21-AFCBVB
- Initiating Device: Maximum line impedance of 20 ohms; maximum current not to exceed 0.010A; maximum voltage 24VDC
- Common Alarm Relay: 0.5A at 125VAC, 60Hz; 1A at 24VDC resistive load
- Auxiliary Power: 24VDC at 0.75A maximum
- Physical Dimensions: 10 inches (H) x 10 inches (W) x 5 inches (D)
- Weight: 18 lbs
Applications of the LiftMaster LM21-AFCB
The LM21-AFCB is suitable for various commercial and industrial settings where fire safety is paramount:
- Warehouses and storage facilities
- Manufacturing plants
- Commercial kitchens and food processing units
- Retail spaces and shopping centers
- Educational institutions and campuses
- Healthcare facilities and hospitals
- Parking garages and automotive service centers
Benefits of the LiftMaster LM21-AFCB
- Enhanced Safety: Provides automated fire door closure, reducing the risk of fire spread and protecting occupants and property.
- Regulatory Compliance: Meets industry standards, aiding in adherence to fire safety regulations and building codes.
- Reliability: Robust design and internal battery backup ensure dependable operation even during power failures.
- Ease of Integration: Compatible with various fire detection systems and door operators, facilitating seamless installation.
- Cost-Effective: Offers advanced features typically found in specialized fire door operators at a more accessible price point.
- User-Friendly Testing: Test key switch allows for convenient system checks without disrupting normal operations.
Why Choose the LiftMaster LM21-AFCB?
The LiftMaster LM21-AFCB stands out as a reliable and efficient solution for fire door automation. Its advanced features, compliance with safety standards, and ease of integration make it an excellent choice for enhancing fire safety measures in commercial and industrial environments. By ensuring prompt and controlled fire door closure during emergencies, the LM21-AFCB plays a vital role in safeguarding lives and property.
Contact Us for Professional Installation
Enhance your facility’s fire safety with the LiftMaster LM21-AFCB Advanced Fire Control Release Device. For more information or to schedule a professional installation, contact us today. Our experienced team is ready to assist you in selecting and implementing the best fire safety solutions tailored to your specific needs.