Elevator Sensor Leveling Switch YG-28: Precise Leveling Control from Nanjing Zhuye Elevatorparts

Step-by-Step Usage Guide for Elevator Sensor Leveling Switch YG-28

1. Professional Installation & Trigger Calibration

• Safety Preparation: Cut off the elevator’s main power supply and fix the elevator car to a safe position aligned with the floor using a safety clamp. Locate the switch mounting position (usually on the car frame, corresponding to the leveling plate or induction plate in the shaft) and clean the installation area to remove dust, oil stains, and debris that may affect trigger accuracy.
• Switch Installation: Fix the YG-28 leveling switch to the dedicated mounting bracket using high-strength bolts provided by Nanjing Zhuye Elevatorparts. Adjust the switch’s height and angle to ensure the trigger contact or sensing surface aligns with the leveling plate in the shaft. For mechanical contact models, set the trigger gap to 1–2mm; for photoelectric models, ensure the sensing distance is 5–8mm (based on Nanjing Zhuye’s technical parameters). Connect the switch’s power terminal (24VDC) and signal terminal to the elevator main control system according to the wiring diagram, ensuring correct polarity and tight connections.
• Leveling Accuracy Calibration: After wiring, restore the power supply and switch the elevator to inspection mode. Operate the car to move up and down slowly, and use a level gauge to check the leveling accuracy when the YG-28 switch sends a stop signal. Adjust the switch’s position slightly if the leveling error exceeds 2mm until the error is within the standard range. Verify that the switch’s signal is transmitted stably—there should be no false triggers or signal loss during the car’s movement.
• Post-Installation Testing: Conduct comprehensive functional tests under different working conditions. Operate the elevator to run at normal speed to different floors, checking the leveling accuracy and signal response speed; simulate shaft vibration and dust accumulation to verify the switch’s anti-interference ability. Ensure the elevator can stop stably and accurately at each floor, and the control system can receive clear stop signals from the switch. If there is inaccurate leveling, false triggers, or no signal transmission, recheck the installation and debugging immediately.

2. Daily Operation & Routine Inspection

• Daily Visual Inspection: During shaft patrols, check the external state of the YG-28 leveling switch. Ensure the zinc alloy shell is free of cracks, deformation, or rust; the wiring terminals are tight with no looseness, corrosion, or poor contact; the trigger contact (for mechanical models) is intact with no wear or deformation, and the sensing surface (for photoelectric models) is clean and free of dust or scratches.
• Weekly Functional Check: Operate the elevator to stop at each floor, observe the leveling effect (no obvious gap between the car floor and landing floor). Use a multimeter to detect the switch’s input voltage (ensure it is 24VDC ± 10%) and output signal voltage, confirming the signal is stable. Check the leveling plate in the shaft for deformation or displacement that may affect the switch’s trigger accuracy.
• Monthly Parameter Monitoring: Clean the switch’s shell, trigger contact, and sensing surface with a dry, lint-free cloth to remove dust and debris. For mechanical models, apply a small amount of special lubricant (recommended by Nanjing Zhuye Elevatorparts) to the trigger mechanism to ensure flexible operation. For elevators in harsh environments (high humidity, strong electromagnetic interference), check the switch’s grounding status to ensure effective anti-interference.

3. Regular Maintenance Schedule

• Quarterly Maintenance: Disconnect the power supply, remove the switch from the mounting bracket, and thoroughly clean the shell, wiring terminals, and trigger/sensing components with a professional cleaner. Inspect the trigger contact (for mechanical models) for wear (replace if wear depth exceeds 0.3mm) and the sensing module (for photoelectric models) for aging. Reinstall the switch and recheck the trigger gap/sensing distance and signal transmission stability.
• Semi-Annual Performance Test: Conduct a comprehensive performance test, including trigger accuracy, signal response speed, and anti-interference ability. Use a professional signal tester to verify the switch’s output signal accuracy; simulate different car speeds to check the switch’s trigger timeliness. For elevators in high-traffic areas (e.g., shopping malls, airports) or harsh environments (high humidity, dust), increase the test frequency.
• Annual Professional Overhaul: Arrange a professional inspection with Nanjing Zhuye Elevatorparts’ certified technical team. Replace the switch if it shows signs of aging, excessive wear, or reduced trigger accuracy. Inspect the mounting bracket and leveling plate for wear or deformation and replace them with genuine parts if necessary. Recalibrate the switch’s positioning accuracy and trigger parameters to meet the original factory performance standards and the elevator’s actual operating requirements.

Recommended Replacement Cycle for Elevator Sensor Leveling Switch YG-28

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 shafts with strong electromagnetic interference (near large electrical equipment), the replacement cycle should be shortened to 2–3 years (mechanical models) and 3–4 years (photoelectric models). Harsh conditions accelerate the wear of mechanical contacts, corrosion of the shell and terminals, and aging of photoelectric modules, significantly reducing the switch’s reliability.
• 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 shaft environments, the replacement cycle can be extended to 4–5 years (mechanical models) and5–6 years (photoelectric models)—only if Nanjing Zhuye’s professional inspection confirms that the switch’s trigger accuracy, signal transmission stability, and component integrity are all intact.

3. Immediate Replacement Conditions

• The switch’s leveling error exceeds 5mm, and the error cannot be corrected through calibration and maintenance, posing a tripping risk to passengers.
• The switch has unstable signal transmission (frequent false triggers or signal loss), leading to abnormal elevator leveling (e.g., overshooting or undershooting the floor) or operation failure.
• The switch’s shell is severely cracked, deformed, or corroded; the mechanical trigger contact is severely worn or stuck; the photoelectric sensing surface is damaged, resulting in inability to trigger normally.
• The switch has no signal output (confirmed by multimeter testing), and the fault cannot be eliminated by checking the power supply and wiring, affecting the normal operation of the elevator.