Elevator Leveling Sensor SLUR-126N3.5SDPO-D: Precision Positioning Core from Nanjing Zhuye Elevatorparts

Step-by-Step Usage Guide for Elevator Leveling Sensor SLUR-126N3.5SDPO-D

1. Professional Selection & Pre-Installation Preparation

1. Professional Selection & Pre-Installation Preparation

2. Correct Installation & Position Calibration

• Old Sensor Removal: Disconnect the wiring of the old sensor according to the recorded labels (avoid wrong connection). Use a screwdriver to remove the fixing screws of the old sensor and take it off gently. Inspect the sensor installation bracket for wear or deformation (repair or replace if damaged).
• New Sensor Installation: Take the SLUR-126N3.5SDPO-D leveling sensor from Nanjing Zhuye Elevatorparts, fix it to the installation bracket with screws, and ensure the sensor’s detection surface is aligned with the leveling plate on the guide rail (gap ≤ 5mm). Use a level ruler to calibrate the sensor to be horizontal, avoiding deviation affecting detection accuracy. Connect the wiring to the corresponding terminals according to the photos and Nanjing Zhuye’s wiring manual, ensuring firm connection and correct polarity.
• Position Calibration: Restore the secondary power supply, use a multimeter to test the sensor’s signal output (refer to Nanjing Zhuye’s standard parameter range). Operate the elevator to move slowly to the landing floor, adjust the sensor’s vertical position until the controller receives the leveling signal at the correct position (car floor aligned with landing floor). Mark the sensor’s installation position to facilitate subsequent maintenance and replacement.

3. Post-Installation Testing & Daily Maintenance

3. Post-Installation Testing & Daily Maintenance

• Function Testing: Restore the main power supply, operate the elevator to run up and down between multiple floors, and check the leveling effect—ensure the car stops stably at each floor with no obvious gap between the car and landing. Use a multimeter to recheck the signal output stability after the first 100 hours of operation.
• Daily Inspection: Maintenance personnel should check the sensor during daily shaft patrols: Observe the sensor shell for damage, corrosion, or loose installation; check the wiring terminals for looseness, oxidation, or poor contact; inspect the detection surface for dust accumulation (clean with a dry cloth if necessary); check the leveling plate on the guide rail for deformation or displacement (adjust if needed).
• Regular Maintenance: Every 3 months, recheck the sensor’s installation position and detection gap, adjusting if there is any deviation. Every 6 months, use a professional detector to test the sensor’s positioning accuracy and signal response time (refer to Nanjing Zhuye’s standard range). For elevators in high-humidity, high-dust, or strong-electromagnetic-interference environments, shorten the maintenance interval to 1 month and enhance the sensor’s protective measures.

Recommended Replacement Cycle for Elevator Leveling Sensor SLUR-126N3.5SDPO-D

• High-Frequency Use & Harsh Environments: For elevators in high-traffic areas (e.g., large shopping malls, airports with daily operation time ≥ 20 hours) or harsh environments (e.g., coastal areas with high salt spray, industrial sites with strong electromagnetic interference/power fluctuations), the replacement cycle is shortened to 1–1.5 years. High-frequency brake operation accelerates probe wear, while harsh environments cause rapid corrosion and electrical component failure.
• Low-Frequency Use & Stable Environments: For elevators with low usage frequency (e.g., villa elevators, small office buildings with daily operation time < 8 hours) and stable environments (constant temperature and humidity, stable power supply), the replacement cycle can be extended to 3–4 years—only after Nanjing Zhuye Elevatorparts’ technicians inspect and confirm that the switch’s signal accuracy, probe wear degree, and insulation performance meet factory standards.

1. Standard Replacement Cycle

2. Adjustments for Special Scenarios

• High-Frequency Use & Harsh Environments: For elevators in high-traffic areas (e.g., large shopping malls, airports with daily operation time ≥ 20 hours) or harsh environments (e.g., coastal areas with high salt spray, industrial sites with strong electromagnetic interference/power fluctuations), the replacement cycle is shortened to 1.5–2.5 years. High-frequency operation increases the load on electronic components, while harsh environments accelerate corrosion and signal interference.
• Low-Frequency Use & Stable Environments: For elevators with low usage frequency (e.g., villa elevators, small office buildings with daily operation time < 8 hours) and stable environments (constant temperature and humidity, stable power supply), the replacement cycle can be extended to 4–5 years—only after Nanjing Zhuye Elevatorparts’ technicians inspect and confirm that the sensor’s positioning accuracy, signal stability, and response time meet factory standards.

3. Immediate Replacement Conditions

• The switch fails to trigger when the elevator reaches the limit position, or triggers accidentally during normal operation—affecting the elevator’s safe operation.
• The switch shell is severely damaged or corroded, the internal circuit is exposed, or the waterproof seal of ZR236-11Y fails—posing short-circuit or electric shock risks.
• The trigger lever is deformed, stuck, or cannot reset automatically—leading to abnormal switch status.
• Professional testing confirms that the switch’s contact resistance exceeds 100mΩ or the insulation resistance is lower than 1MΩ, failing to meet basic electrical performance requirements.