Elevator Brake Switch 1045/48 ACT WEAR: Safety Control Core from Nanjing Zhuye Elevatorparts

Step-by-Step Usage Guide for Elevator Brake Switch 1045/48 ACT WEAR

1. Professional Selection & Pre-Installation Preparation

1. Professional Selection & Pre-Installation Preparation

2. Correct Installation & Signal Calibration

• Old Switch Removal: Disconnect the wiring of the old switch according to the recorded labels (avoid wrong connection). Use a screwdriver to remove the fixing screws of the old switch and take it off gently. Inspect the switch installation seat and brake contact surface for wear or deformation (repair or replace if damaged).
• New Switch Installation: Take the 1045/48 ACT WEAR brake switch from Nanjing Zhuye Elevatorparts, fix it to the installation seat with screws, and ensure the wear detection probe is closely attached to the brake disc (gap ≤ 0.5mm). Connect the wiring to the corresponding terminals according to the photos and Nanjing Zhuye’s wiring manual, ensuring firm connection and correct polarity. Use cable ties to organize the signal line, avoiding contact with high-temperature components and moving parts.
• Signal Calibration: Restore the secondary power supply, use a multimeter to test the switch’s signal output (refer to Nanjing Zhuye’s standard parameter range). Operate the brake manually to open and close, confirming the switch transmits accurate signals to the main controller (the controller’s indicator light changes synchronously). Adjust the probe position if the signal is abnormal until calibration is completed.

3. Post-Installation Testing & Daily Maintenance

• Function Testing: Restore the main power supply, switch the elevator to inspection mode, and operate it to run up and down slowly. Confirm the brake opens/closes normally and the switch’s signal transmission is stable (no false alarms). Use a multimeter to recheck the signal output after the first 100 hours of operation.
• Daily Inspection: Maintenance personnel should check the switch during daily machine room patrols: Observe the switch shell for damage, corrosion, or loose installation; check the wiring terminals for looseness, oxidation, or overheating; inspect the wear detection probe for wear or deviation; clean the switch surface and probe with a dry cloth to remove dust and oil stains.
• Regular Maintenance: Every 3 months, recheck the switch’s signal accuracy and probe gap, adjusting if there is any deviation. Every 6 months, perform a comprehensive inspection of the internal circuits (by professional technicians) to check for component aging. For elevators in high-humidity, high-temperature, or strong-electromagnetic-interference environments, shorten the maintenance interval to 1 month and apply anti-rust treatment to the switch’s metal parts.

Recommended Replacement Cycle for Elevator Brake Switch 1045/48 ACT WEAR

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 1–1.5 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.

3. Immediate Replacement Conditions

• The switch transmits inaccurate signals (e.g., false alarms of brake wear, failure to detect brake opening/closing) and cannot be restored through calibration.
• The detection probe is severely worn (wear amount > 2mm) or deformed, failing to closely attach to the brake disc for normal detection.
• The switch shell is severely damaged or corroded, the internal circuit is exposed, or the wiring terminals are oxidized and cannot be connected firmly—posing short-circuit or electric shock risks.
• Professional testing confirms that the switch’s response time is longer than 100ms (standard ≤ 50ms) or the signal-to-noise ratio is lower than 40dB, failing to meet emergency safety control requirements.

3. Immediate Replacement Conditions

• The belt has obvious cracks, peeling, or thinning (thickness reduced by more than 30% compared to the new belt), losing its tensile strength.
• The belt slips frequently during door operation, leading to delayed door opening/closing or uneven door alignment.
• The belt’s elongation exceeds 5% (measured against the standard length of 1400mm), and tension adjustment cannot restore its normal transmission performance.
• The belt is contaminated by corrosive substances (e.g., strong acid, strong alkali) or burned by high temperature, with obvious damage to the surface and internal structure.

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.