Description
Elevator door lock device LL-3 Brief Introduction
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Product Name |
Elevator door lock device |
| Model Number | LL-3 |
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Quality
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Original.Brand New
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Payment
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T/T. Paypal. Western Union
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Delivery
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3-5 Working Days
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Packaging
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Packed by carton
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Elevator Door Lock Device LL-3 – Nanjing Zhuye Elevatorparts
The elevator car top emergency power supply is a critical safety component that ensures the elevator’s emergency systems (such as lighting, communication, and door opening) operate normally when the main power supply fails. The Elevator Car Top Emergency Power Supply DJW12-4.5/7.0 provided byNanjing Zhuye Elevatorparts is a high-reliability power supply device tailored for mainstream elevator systems. It supports two capacity specifications (4.5Ah and 7.0Ah) to meet the needs of different elevator models, widely compatible with brands such as Schindler, OTIS, and KONE. Crafted with high-performance lithium-ion batteries, intelligent charging management modules, and flame-retardant casings, this emergency power supply meets international elevator safety standards (EN 81-20, GB 7588) and has become a trusted choice for global elevator maintenance teams and manufacturers.
The elevator leveling system is a key component that ensures the elevator car aligns accurately with the floor, providing safe and comfortable access for passengers. The elevator leveling sensor serves as the “eye” of this system, detecting the car’s position in real time. The Elevator Leveling Sensor TNC-121 provided by Nanjing Zhuye Elevatorparts is a high-precision position-sensing component tailored for mainstream elevator systems. It is widely compatible with elevator brands such as Schindler, OTIS, and KONE, suitable for both passenger and freight elevators. This sensor adopts advanced photoelectric sensing technology, featuring high detection accuracy, fast response speed, and strong anti-interference ability, ensuring the elevator stops stably and accurately at each floor. Crafted with high-quality optical components, sealed metal shells, and precision electronic circuits, it meets international elevator safety standards (EN 81-20, GB 7588) and has become a trusted choice for global elevator maintenance teams and manufacturers.
The elevator lock is a core safety component that ensures the elevator car door and landing door remain locked during operation, preventing accidental opening and ensuring passenger safety. The Elevator Lock CV50 180 JK406-001 provided by Nanjing Zhuye Elevatorparts is a high-reliability safety lock tailored for mainstream elevator systems. It is widely compatible with elevator brands such as Schindler, OTIS, and KONE, suitable for both passenger and freight elevators. This elevator lock integrates precise mechanical structure and stable electrical control, achieving reliable locking when the elevator is running and smooth unlocking when it reaches the floor. Crafted with high-strength alloy steel, flame-retardant plastic, and precision electronic components, it meets international elevator safety standards (EN 81-20, GB 7588) and has become a trusted choice for global elevator maintenance teams and manufacturers.
The elevator’s electrical control system is prone to arc generation during switch-on and switch-off of contacts, which may cause damage to electrical components or even fire hazards. The elevator arc extinguisher serves as a “safety barrier” to suppress and eliminate arcs. The Elevator Arc Extinguisher HD1.211 provided by Nanjing Zhuye Elevatorparts is a high-performance arc suppression component tailored for elevator electrical systems. It is widely compatible with mainstream elevator brands such as Schindler, OTIS, and KONE, suitable for arc suppression of elevator contactors, relays, and other electrical contacts. Crafted with high-quality arc-extinguishing materials, flame-retardant shells, and precision structural design, this arc extinguisher meets international electrical safety standards (IEC 60947, GB/T 14048) and has become a trusted choice for global elevator maintenance teams and manufacturers.
The elevator door operator is the “power core” of elevator door opening and closing, and the door operator belt serves as a critical transmission component that connects the motor and door pulley system. The Elevator Door Operator Belt L075 provided by Nanjing Zhuye Elevatorparts is a high-performance transmission belt tailored for mainstream elevator door operator systems. It is widely compatible with elevator brands such as Schindler, OTIS, and KONE, playing a vital role in ensuring smooth, quiet, and stable operation of elevator doors. Crafted with high-strength polyurethane (PU) material and embedded with high-tensile polyester cords, this belt features excellent wear resistance, tensile strength, and flexibility, meeting international elevator safety standards (EN 81-20, GB 7588) and becoming a trusted choice for global elevator maintenance teams and manufacturers.
The elevator door lock device is a core safety component that ensures the elevator door remains locked during operation and prevents accidental opening when the elevator is not at the landing. The Elevator Door Lock Device LL-3 launched by Nanjing Zhuye Elevatorparts is a high-performance device tailored for mainstream elevator systems, widely compatible with renowned brands such as Schindler, OTIS, and KONE. It integrates door locking, unlocking, and safety circuit control functions, featuring a precise mechanical structure, sensitive triggering, and stable performance. Crafted with high-strength steel, wear-resistant alloy components, and corrosion-resistant materials, the LL-3 strictly complies with international elevator safety standards (EN 81-20, GB 7588-2003), making it a trusted choice for global elevator maintenance teams and manufacturers.
Nanjing Zhuye Elevatorparts adheres to the “quality first, safety-oriented” principle, implementing strict quality control throughout the production process of the LL-3 elevator door lock device. Each unit undergoes rigorous testing, including locking force verification, unlocking sensitivity testing, durability assessment, and corrosion resistance inspection. The device’s main locking mechanism adopts a precision gear design, ensuring a locking force of not less than 1000N to prevent the door from opening accidentally. The contact points are made of high-conductivity copper alloy with gold plating treatment, ensuring stable electrical signal transmission and long service life. The shell and key components are treated with anti-corrosion and anti-rust processes, enabling the device to work stably in harsh environments such as elevator shafts with high humidity and dust (operating temperature range: -10℃ to 60℃).
Usage Guide for Elevator Door Lock Device LL-3
Correct installation, debugging, and daily inspection of the LL-3 elevator door lock device are crucial to ensuring the elevator’s door system safety. Nanjing Zhuye Elevatorparts strongly recommends that only certified elevator maintenance technicians perform installation and maintenance, as improper operation may lead to door lock failure, resulting in serious safety accidents such as elevator door opening during operation.
1. Pre-Installation Preparation
First, confirm that the A3N53390 display board matches the elevator model (check parameters such as voltage, interface type, and installation dimensions). Consult Nanjing Zhuye Elevatorparts’ technical team immediately if there is any doubt about compatibility. Then, cut off the elevator’s main power supply and control cabinet power supply, lock the switch, and place a “Maintenance in Progress” warning sign at the elevator entrance. Remove the old display board from the cab or landing hall panel, and take photos to record the wiring direction and terminal connections for future reference. Finally, prepare professional tools including a screwdriver, wire stripper, multimeter, and anti-static gloves, and clean the installation area to remove dust, debris, and oil stains.
First, confirm that the LL-3 door lock device matches the elevator door system model (check parameters such as installation dimensions, locking stroke, and electrical interface). Consult Nanjing Zhuye Elevatorparts’ technical team immediately if there is any uncertainty about compatibility. Then, cut off the elevator’s main power supply and door system power supply, lock the switch, and place a “Maintenance in Progress” warning sign at the elevator entrance. Fix the elevator car at a flat floor position and block the door to prevent accidental closing. Finally, prepare professional tools including a screwdriver, wrench, torque wrench, and multimeter, and clean the door lock installation area (on the landing door or car door) to remove dust, debris, and oil stains.
Remove the old door lock device from the elevator door, and take photos to record the installation position and wiring connections for future reference. Take the new LL-3 door lock device from Nanjing Zhuye Elevatorparts, install it on the door frame, and fix it firmly with screws (the torque should comply with Nanjing Zhuye’s specifications to avoid damaging the device). Connect the door lock’s electrical wires to the corresponding terminals of the door system controller strictly according to the recorded photos and wiring manual, ensuring firm connections and correct polarity. After installation, manually open and close the door to check if the locking mechanism acts smoothly—ensure the door is locked reliably when closed and unlocked flexibly when opened. Use a multimeter to test the on-off state of the door lock’s safety contacts (contacts should be closed when locked, open when unlocked). Switch on the power, enter the elevator’s debugging mode, and test the door lock’s interlock function: the elevator should not start if the door is not locked, and the door should unlock automatically when the elevator reaches the landing.
3. Daily Use & Maintenance
According to the “Elevator Maintenance Rules” (TSG T5002-2017) and Nanjing Zhuye’s recommendations, the LL-3 door lock device should be inspected monthly and undergo professional comprehensive testing annually. For daily maintenance: Check the door lock’s external structure for cracks, deformation, or loose screws; manually test the door opening and closing to ensure the locking mechanism is flexible without jamming. Regularly clean the door lock’s moving parts and contact points with a dry cloth to remove dust and debris—apply a small amount of high-temperature resistant lubricant to the moving parts every 3 months (use the lubricant recommended by Nanjing Zhuye). Check the electrical contacts for oxidation; if oxidation is found, clean them with fine sandpaper. If the door lock makes abnormal noises during operation or the elevator reports a door lock fault, stop using the elevator immediately and contact Nanjing Zhuye’s after-sales team for maintenance.
Replacement Cycle of Elevator Door Lock Device LL-3
The replacement cycle of the LL-3 elevator door lock device is closely related to operating frequency and working environment. Under normal conditions (elevator daily operation 12-24 hours, door opening and closing ≥500 times/day, dry and clean environment), Nanjing Zhuye Elevatorparts recommends a replacement cycle of 3-5 years. This cycle is determined based on long-term field operation data and component aging tests, fully considering the wear of mechanical parts, oxidation of electrical contacts, and attenuation of locking performance.
For elevators in high-traffic areas (e.g., large shopping malls, airports with door opening and closing ≥1000 times/day) or harsh environments (high humidity, heavy dust, frequent vibration, or large temperature fluctuations), the replacement cycle should be shortened to 2-3 years. High-frequency use accelerates the wear of the locking mechanism and contacts, while harsh environments cause corrosion of components and affect the device’s sensitivity. For low-usage elevators (e.g., villa elevators, small office buildings with door opening and closing <200 times/day) in stable environments, the cycle can be extended to 5-6 years, but only after inspection and confirmation by Nanjing Zhuye’s technicians that the door lock’s locking force, triggering sensitivity, and contact performance meet safety standards.
Replace the LL-3 door lock device immediately if any of the following issues occur, regardless of its service life: The locking mechanism is stuck or fails to lock/unlock, leading to abnormal door opening and closing; the locking force is less than 1000N (tested by professional equipment); the electrical contacts are severely oxidized or burned, causing frequent safety circuit faults; the device’s shell or key components are severely cracked, deformed, or corroded; the door lock fails to pass the annual professional safety test; the device malfunctions repeatedly and cannot be repaired.
The Elevator Door Lock Device LL-3 from Nanjing Zhuye Elevatorparts integrates high reliability, durability, and strong compatibility, providing a critical safety guarantee for the elevator door system. By following the correct usage, maintenance, and replacement guidelines, you can effectively prevent door lock-related faults, ensure the safe operation of the elevator, and protect the lives and property of passengers. Choosing Nanjing Zhuye Elevatorparts means you get 100% authentic LL-3 door lock devices, as well as professional services including model matching, on-site installation guidance, and timely after-sales support. Trust Nanjing Zhuye Elevatorparts for the safe and stable operation of your elevator.
