Elevator Car Display Board DAA26800FM1/FM2: High-Definition Cab Information Interface

Proper Usage Methods of Elevator Car Display Board DAA26800FM1/FM2

1. Installation & Commissioning

• First, cut off the elevator power supply and secure the work area to ensure safety. Thoroughly clean the installation position (designated area on the cab operation panel or cab wall) to remove dust, oil stains, and debris, providing a stable and flat mounting base for the display board.
• Accurately insert the DAA26800FM1/FM2 into the installation slot, ensuring a tight fit without gaps and alignment with the cab interior surface. Fix the display board firmly using matching screws from the back of the slot. The tightening torque must comply with the elevator manufacturer’s technical requirements (typically 2–3 N·m) to avoid damaging the display’s circuit board, screen, or the cab’s decorative panel.
• Correct wiring connection: In accordance with the wiring diagram provided by Nanjing Zhuye Elevatorparts and the elevator control system guidelines, connect the display board’s power wires (usually DC 12V/24V) and signal wires to the corresponding terminals of the elevator main controller or cab control board. Ensure all connections are tight and reliable, and the wire insulation layer is intact to prevent short circuits or poor contact. Pay special attention to the positive and negative poles of the power supply and the correctness of signal pin connections to avoid irreversible damage to the display’s internal modules.
• Post-installation commissioning: Restore the elevator power supply, check if the display board lights up normally, and verify the clarity and completeness of the displayed content (floor number, running direction, fault prompts, etc.). Operate the elevator in inspection mode to confirm that the display board synchronously updates the elevator’s real-time status. Simulate fault scenarios (e.g., overload, door obstruction) to test if the display board accurately triggers corresponding prompt information. If abnormalities such as dim display, missing content, or flickering occur, recheck the wiring and installation position and adjust promptly.

2. Daily Operation & Routine Inspection

• During daily elevator operation, observe the display status regularly. Abnormal phenomena such as no display, blurred content, flickering, delayed information update, or garbled characters indicate potential faults in the display board or wiring.
• Conduct weekly visual inspections and cleaning: Use a dry, lint-free microfiber cloth to gently wipe the display surface, removing dust, fingerprints, and minor stains. Avoid using water, alcohol, acetone, or other corrosive/volatile cleaners that may damage the screen’s anti-glare coating. Check the display board’s edge, fixing screws, and wiring terminals for cracks, deformation, looseness, or oxidation, and retighten loose screws in a timely manner.
• Periodically check the wiring connections (after cutting off the power supply). Ensure the wires are not loose, aged, or damaged, and the terminals are free of oxidation. Resolve any wiring issues (such as broken wires or loose terminals) immediately to avoid display malfunctions that may confuse passengers.

3. Regular Maintenance

• Every 3 months, conduct a comprehensive inspection of the display board’s installation status and wiring connections. Check if the display board is loose or displaced due to long-term elevator vibration and adjust the fixing screws if needed. Use a multimeter to detect the power supply voltage, ensuring it remains within the standard range (typically DC 12V ± 0.5V or 24V ± 1V) to avoid component damage caused by voltage fluctuations.
• Every 6 months, perform a full performance test: Verify the display’s brightness, contrast, and color uniformity. Calibrate the brightness to ensure clear visibility under both strong light (e.g., sunlight entering the cab) and low-light conditions. Check the integrity of the display interface and confirm that all status information and prompt messages can be displayed normally.
• Annually, arrange professional maintenance with Nanjing Zhuye Elevatorparts’ technical team. Disassemble the display board to inspect internal components (including the LCD module, circuit board, and connectors), remove internal dust with professional tools, and replace aging components (such as capacitors or connectors) if necessary. This ensures the long-term stable operation of the display board and maintains its performance at the factory standard.

Recommended Replacement Cycle of Elevator Car Display Board DAA26800FM1/FM2

1. Standard Replacement Cycle

2. Scenario-Based Cycle Adjustment

• Harsh Operating Environments: For elevators in high-humidity coastal regions, high-dust construction sites, high-temperature unventilated cabs, or areas with strong electromagnetic interference (e.g., near industrial equipment), the replacement cycle should be shortened to 4–5 years. Harsh conditions accelerate the aging of LCD modules, corrosion of circuit boards, and damage to the display surface, significantly reducing the display board’s reliability and service life.
• Low-Frequency Use Scenarios: For elevators with low usage frequency (e.g., villa elevators, small office buildings with less than 3,000 monthly rides) and stable cab environments, the replacement cycle can be appropriately extended to 7–8 years—provided a professional inspection by Nanjing Zhuye Elevatorparts confirms that the display board’s brightness, clarity, signal stability, and structural integrity are intact.

3. Immediate Replacement Conditions

• The display screen is severely cracked, scratched, or the backlight is permanently damaged, resulting in unreadable information that cannot be improved by cleaning or adjustment.
• Persistent faults occur, such as no display, frequent flickering, black screen, or garbled characters—issues that cannot be resolved after checking wiring, power supply, and circuit connections.
• The display board’s signal response is significantly delayed (exceeding 2 seconds), leading to confusion for passengers and affecting the elevator’s operation monitoring.
• The display board fails the annual performance test, and key indicators (brightness, contrast, signal stability) cannot be restored to the standard range even after maintenance.