Description

Elevator Door Lock Device Core-AP – Usage, Replacement Cycle & Maintenance Guide
By Nanjing Zhuye Elevatorparts

Introduction
The Core-AP elevator door lock device is a precision-engineered, electromechanical safety component that prevents car movement when landing doors are not fully closed. Manufactured and distributed worldwide by Nanjing Zhuye Elevatorparts, this IP65-rated unit meets EN 81-20/50, ASME A17.1 and UL standards, delivering 1 million+ cycles of reliable, low-noise operation. This 800-word guide covers correct installation, daily operation, and the recommended replacement cycle to keep every elevator safe, smooth and code-compliant.

1. Product Highlights
– Lock Type: Rotary vane, 3-point locking, 90° operation
– Contacts: 2-pole change-over, 10 A @ 250 V AC, silver-plated
– Roller: Ø17 mm, 304 stainless, grease-packed
– Housing: IP65 ABS, anti-UV, –20 °C to +70 °C
– Mechanical Life: 1 million+ cycles, 50 Nm torque
– Weight: 0.18 kg, snap-fit 30 mm backset

2. Installation Method
Step 1 – Preparation
De-energise the lift; lock-out/tag-out main breaker. Record serial number and key code.

Step 2 – Mounting
Mount on door header 5 mm before full closure, vane perpendicular to striker (±2°). Use M5 screws, torque 8 N·m.

Step 3 – Wiring
Route 3-core 1.5 mm² cable through PG9 gland. Connect NC contact in series with safety chain; earth housing.

Step 4 – Commissioning
Power-up; door must close fully, contacts change within 1 mm. Log trip distance and technician signature.

3. Daily & Preventive Maintenance
Daily (Technician)
Visual check – vane straight, no cracks, grease present.

Monthly
Clean vane and striker with 70 % IPA; grease vane sparingly.

Quarterly
Measure contact resistance (<0.1 Ω), insulation (>10 MΩ). Cycle lock 50× under load.

Annually
Replace grease pack and torque screws. Full safety-chain test including governor.

4. Replacement Cycle & Indicators
| Duty Cycle | Replace Every | Cycles | Warning Signs |
| Standard | 5–7 years | 1 M | Vane wear >1 mm, >1 Ω resistance |
| Commercial | 3–4 years | 0.6 M | Contact welding, IP65 failure |
| High-speed | 2–3 years | 0.4 M | Track scoring, temp >70 °C |

Replace immediately if:
– Contact welding or housing cracks
– Repeated “lock fault” without mis-alignment
– Vane temperature >70 °C during normal run

Maintain one spare Core-AP per 25 locks for <4-hour response.

5. Why Choose Nanjing Zhuye Elevatorparts?
• Full traceability – laser-etched serial & QR code
• Same-day global dispatch via DHL/FedEx Express
• 24/7 multilingual hotline and on-site training
• Competitive tiered pricing and custom roller sizes for OEM projects

6. Conclusion
The Core-AP door lock device is small but mission-critical. By following the installation, testing, and replacement guidelines—and sourcing only from Nanjing Zhuye Elevatorparts—you guarantee code compliance, reduce downtime, and ensure every passenger enters and exits smoothly.