Description
Elevator Door Operator Motor DM-75
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Product Name |
Elevator Door Operator Motor |
| Model Number |
DM-75 |
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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 Operator Motor DM-75: High-Quality Drive Component from Nanjing Zhuye Elevatorparts
The Elevator Door Operator Motor DM-75 is a high-performance permanent magnet synchronous motor (PMSM), specially designed as the core power unit for elevator door systems, especially compatible with TKE K400 door operators. It delivers stable, quiet, and efficient power to control the synchronous opening and closing of car doors and landing doors, directly determining the safety, comfort, and operational efficiency of the elevator door system. Exclusively supplied byNanjing Zhuye Elevatorparts, this motor fully complies with international standards such as EN 81-1 and national standard GB/T 18488-2015, with reliable performance and strong adaptability. It is widely compatible with mainstream elevator brands including Kone, Otis, Mitsubishi, LG Sigma, Hyundai, and Hitachi, applicable to residential buildings, commercial complexes, hotels, office towers, and other public facilities[3].
Nanjing Zhuye Elevatorparts upholds stringent quality control standards, and the DM-75 door operator motor is a prime reflection of this commitment. Each motor undergoes rigorous pre-delivery testing, including high-low temperature (-25℃ to 85℃) resistance tests, noise level detection (≤55dB under no-load condition), insulation resistance verification (≥2MΩ with 500V megohmmeter), and torque performance calibration. It adopts high-quality metal materials, a durable permanent magnet core, and high-purity copper windings, ensuring long-term stable operation and excellent energy efficiency. The enclosed cast aluminum shell ensures excellent dustproof and waterproof performance (IP54 protection grade), adapting to harsh operating environments in elevator hoistways, while the sealed bearing with high-temperature resistant lubricating grease supports long-term stable operation without abnormal noise, backed by a standard one-year warranty[4].
Usage Guide for Elevator Door Operator Motor DM-75
Proper installation, wiring, debugging, and daily maintenance are crucial to maximizing the service life and performance of the DM-75 motor. Nanjing Zhuye Elevatorparts strongly recommends that all operations be performed by certified elevator maintenance technicians to avoid door system failures or safety hazards. Before installation, confirm that the motor model DM-75 matches the elevator door operator and control system specifications, especially for TKE K400 door operators. For detailed wiring diagrams, terminal definitions, and parameter settings, refer to the product manual provided by Nanjing Zhuye Elevatorparts or contact our professional technical support team for timely assistance. Note: Always cut off the elevator’s main power supply and lock the switch before operation, wear professional protective gear, and ensure the installation environment is dry, well-ventilated, and free of dust and oil stains.
1. Pre-Installation Preparation
First, cut off the elevator’s main power supply and lock the switch to prevent accidental startup, then manually move the car to the middle floor to ensure a safe operation space. Prepare professional tools: torque wrench, cross screwdriver, 500V megohmmeter, level ruler, wire strippers, and insulation tape. Clean the installation position on the door operator bracket thoroughly to remove dust, rust, and oil stains that may affect installation accuracy—an essential step to ensure installation quality. Carefully inspect the DM-75 motor for external damage, such as cracked shell, loose terminals, or damaged connectors. Use a megohmmeter to test the insulation resistance and winding continuity of the motor to ensure no internal faults. Meanwhile, check matching components such as transmission belts, pulleys, and door operator controllers for wear or deformation, and replace damaged parts in advance to ensure smooth coordination with the new motor.
2. Installation & Wiring
Fix the DM-75 motor on the door operator bracket with high-strength hexagon bolts, and use a level ruler to adjust the motor to be horizontally installed (tolerance ≤±1mm) to avoid vibration during operation. Tighten the fixing bolts according to the specified torque (M8 thread: 8-10N·m) to prevent loosening caused by long-term vibration. Follow the wiring diagram provided by Nanjing Zhuye Elevatorparts to connect power wires, control signal wires, and encoder wires to the corresponding terminals of the door operator controller, complying with standard electrical wiring principles. Use shielded cable for stable signal transmission, control the wire stripping length to 6-8mm, ensure firm terminal connections, and wrap the connection with insulation tape to prevent short circuit. Separate power wires and signal wires to reduce electromagnetic interference, and use cable ties to organize the wires neatly for easy maintenance. After wiring is completed, install the motor protective cover to prevent dust and foreign objects from entering the motor[4].
3. Debugging & Daily Maintenance
After installation and wiring, restore the elevator’s main power supply and start debugging. Use the door operator controller to set parameters such as rated speed, acceleration/deceleration time, and torque limit to match the DM-75 motor, ensuring precise speed regulation and smooth door operation. First, run the motor under no-load condition for 5-10 minutes to check for abnormal noise, vibration, or overheating. Then perform load testing: operate the elevator in maintenance mode to run through all floors, verifying that the car doors and landing doors open and close smoothly without jamming. For daily maintenance, strictly follow TSG T5002—2017 regulations and Nanjing Zhuye Elevatorparts’ recommendations: Clean the motor shell with a dry cloth monthly; inspect the fixing bolts, wiring terminals, and transmission belt for abnormalities. Every 6 months, use a megohmmeter to test the insulation resistance of the motor and replace the bearing lubricating grease. For elevators in harsh environments, increase the inspection frequency to twice a month and spray anti-rust agent on the motor’s metal parts.
Replacement Cycle of Elevator Door Operator Motor DM-75
The replacement cycle of the DM-75 motor mainly depends on usage frequency, operating environment, and maintenance quality, referring to industry average service life data, field test results, and practical application experience. Under normal operating conditions—12-24 hours of daily operation, regular maintenance, and a dry, clean operating environment—Nanjing Zhuye Elevatorparts recommends a replacement cycle of 5-7 years. This cycle is formulated based on extensive field test data and relevant industry standards, fully considering key factors such as permanent magnet aging, bearing wear, and insulation performance degradation during long-term operation.
For elevators in high-traffic areas (such as airports, subway stations, and large shopping malls) with daily operation time exceeding 20 hours, or harsh operating environments (high humidity, heavy dust, frequent vibration), the replacement cycle should be shortened to 3-5 years. High-frequency door opening and closing actions will accelerate the wear of the motor’s internal components, while harsh environments easily cause shell corrosion and internal circuit faults. For low-usage elevators (such as villas and small office buildings) with daily operation time less than 8 hours, proper daily maintenance can extend the replacement cycle to 7-9 years. However, for motors that have been in service for more than 6 years, Nanjing Zhuye Elevatorparts recommends that professional technicians conduct semi-annual comprehensive inspections to assess whether replacement is needed in advance.
Regardless of the service life, the DM-75 motor should be replaced immediately if any of the following situations occur: Abnormal noise, severe vibration, or frequent overheating (surface temperature exceeding 85℃) during operation; insulation resistance drops below 0.5MΩ, indicating internal insulation damage; it fails to drive the door system normally due to insufficient torque; the shell is severely corroded or cracked, affecting the protective performance; the motor causes frequent door system faults and cannot be repaired effectively; it fails to pass the annual elevator safety inspection. It is crucial to use 100% genuine DM-75 motors from Nanjing Zhuye Elevatorparts to ensure compatibility with the elevator door system and guarantee operational safety.
The Elevator Door Operator Motor DM-75 from Nanjing Zhuye Elevatorparts integrates reliability, efficiency, and strong compatibility, making it an ideal choice for elevator door system maintenance, renovation, and new installation projects. Backed by strict quality control, mature production technology, and comprehensive after-sales service, Nanjing Zhuye Elevatorparts provides 24/7 technical support and fast delivery, winning wide trust from elevator maintenance companies, property management enterprises, and elevator manufacturers around the world. We are committed to providing genuine, high-quality elevator components, as well as professional technical support including model matching, on-site installation guidance, and fault diagnosis. Choose Nanjing Zhuye Elevatorparts and the DM-75 door operator motor to ensure the long-term safe, stable, and efficient operation of your elevator door system.
