Elevator Door Knife FED-0701 & Door Lock Device 0702: Linked Safety Core from Nanjing Zhuye Elevatorparts

Step-by-Step Usage Guide for Elevator Door Knife FED-0701 & Door Lock Device 0702

1. Professional Installation & Linkage Debugging

• Safety Preparation: Cut off the elevator’s main power supply and the power supply of the door system, and hang a “Maintenance in Progress—Do Not Power On” sign at the power switch. Fix the elevator car to a safe position aligned with the floor using a safety clamp. Clean the installation areas of the car door (for FED-0701) and landing door (for 0702) to remove dust, oil stains, and debris that may affect installation accuracy.
• Device Installation: Install the FED-0701 door knife on the car door hanging bracket using high-strength bolts provided by Nanjing Zhuye Elevatorparts, ensuring it is horizontally aligned (tilt angle ≤ 1°) and the knife edge is correctly oriented toward the landing door lock roller. Install the 0702 door lock device on the landing door frame, fixing it firmly and ensuring the lock hook aligns with the lock roller and the electromagnetic interlock is properly connected to the elevator control system. Connect the signal lines of both devices to the elevator main control panel according to the wiring diagram.
• Linkage Calibration: Adjust the position of the FED-0701 door knife to ensure the gap between the knife edge and the landing door lock roller is 3–5mm when the car door is closed. Operate the car door manually to check the engagement: when the door opens, the door knife should smoothly engage with the lock roller to drive the 0702 door lock device to unlock; when the door closes, the door knife should disengage from the roller, and the 0702 lock hook should lock the landing door immediately. Use a force gauge to verify the 0702 lock-up force (≥ 1500N) and ensure the interlock signal is transmitted accurately to the control system (the elevator cannot start if the landing door is unlocked).
• Post-Installation Testing: Restore the power supply and conduct comprehensive functional tests. Operate the elevator to run to different floors, checking the linkage performance of FED-0701 and 0702: the landing door should unlock synchronously with the car door when aligned with the floor, and lock immediately after the doors close. Test the emergency unlocking function of the 0702 device (using the dedicated key) to ensure it can be unlocked manually in case of emergencies. Verify there is no abnormal noise during operation and the door opening/closing speed meets the standard. If there is linkage jamming, incomplete locking, or abnormal signal transmission, recheck the installation and calibration immediately.

2. Daily Operation & Routine Inspection

• Daily Visual Inspection: During on-site patrols, check the external state of FED-0701 and 0702. Ensure the FED-0701 door knife has no cracks, deformation, or severe wear (wear depth ≤ 0.5mm); the 0702 door lock device’s lock hook is intact, the electromagnetic coil has no overheating discoloration, and the wiring terminals are tight. Check the engagement gap between the door knife and lock roller to confirm it is within the 3–5mm range.
• Weekly Functional Check: Operate the elevator to open and close the doors multiple times at each floor, listening for abnormal noise (such as friction or collision) from the door knife and lock device. Verify the landing door is tightly locked when the elevator is running and cannot be opened manually from the outside (except with the dedicated key). Check the interlock signal: the elevator should fail to start if the landing door is not fully locked.
• Monthly Parameter Monitoring: Use a caliper to measure the wear degree of the FED-0701 door knife edge and the 0702 lock hook. Clean the door knife, lock roller, and lock hook with a dry, lint-free cloth to remove dust and oil stains. For elevators in harsh environments, apply a small amount of special lubricant (recommended by Nanjing Zhuye Elevatorparts) to the moving parts of both devices to reduce wear and ensure smooth operation.

3. Regular Maintenance Schedule

• Quarterly Maintenance: Disconnect the power supply, remove the FED-0701 door knife and 0702 door lock device (if necessary), and thoroughly clean all components with a professional cleaner. Inspect the door knife for wear (replace if wear depth exceeds 0.5mm) and the lock hook for deformation or wear (replace if lock-up force is less than 1500N). Recheck and tighten all fixed bolts and wiring terminals.
• Semi-Annual Performance Test: Conduct a comprehensive performance test, including linkage accuracy, lock-up reliability, and interlock signal transmission. Simulate elevator overrun and power failure scenarios to verify that the 0702 door lock device can remain locked and the FED-0701 door knife does not malfunction. For elevators in high-traffic areas (e.g., shopping malls, airports) or harsh environments (high humidity, dust), increase the test frequency and check the door system rail for deformation that may affect device performance.
• Annual Professional Overhaul: Arrange a professional inspection with Nanjing Zhuye Elevatorparts’ certified technical team. Replace worn components of FED-0701 and 0702 with genuine parts. Recalibrate the linkage gap between the door knife and lock roller and the lock-up force of the 0702 device to meet the original factory performance standards. Inspect the electromagnetic interlock of the 0702 device for sensitivity and replace the coil if necessary.

Recommended Replacement Cycle for Elevator Door Knife FED-0701 & Door Lock Device 0702

1. Standard Replacement Cycle

2. Adjustments for Special Scenarios

• Harsh Environments: For elevators in high-humidity coastal areas (salt spray corrosion), high-dust construction sites, or elevators with frequent door operation (more than 2000 times per day), the replacement cycle should be shortened to 1.5–2 years. Harsh conditions accelerate the wear of the door knife edge, corrosion of the lock device, and aging of the electromagnetic coil, significantly reducing the reliability of the linked system.
• Low-Frequency Use Scenarios: For elevators with low usage frequency (e.g., villa elevators, small office buildings with daily operation time < 8 hours) and clean, stable environments, the replacement cycle can be extended to 3–4 years—only if Nanjing Zhuye’s professional inspection confirms that the linkage accuracy, lock-up reliability, and component integrity of FED-0701 and 0702 are all intact.

3. Immediate Replacement Conditions

• The FED-0701 door knife is severely worn (wear depth > 0.5mm) or deformed, leading to failure to engage with the lock roller or jamming during door opening/closing.
• The 0702 door lock device’s lock-up force is less than 1500N, or the lock hook is deformed/cracked; the electromagnetic interlock fails, leading to incorrect signal transmission or inability to lock the landing door.
• The linked system malfunctions (e.g., landing door fails to unlock when the car door opens, or car door fails to close when the landing door is locked), and the fault cannot be eliminated through maintenance and debugging.
• The door knife or lock device components are severely rusted (affecting structural strength) or damaged due to impact, posing obvious safety hazards.