Escalator Handrail Speed Mismatch with Steps
Why Is the Escalator Handrail Speed Not Synchronized with the Steps? During escalator operation, the escalator handrail should maintain the same speed as the steps to provide stable support for passengers. If the handrail speed is significantly faster or slower than the steps, passengers may feel a pulling sensation when holding the handrail, and in […]
Elevator Door Opening & Closing Speed Issues
Why Does Elevator Door Operator Opening and Closing Speed Become Abnormal? In modern elevators, the elevator door operator is responsible for driving the car door during opening, closing, and speed control. It is the core actuator of the elevator door system. Under normal conditions, the door operator should achieve smooth acceleration, deceleration, and accurate positioning […]
Problems Caused by Worn Escalator Step Edge Strips
Why Should Escalator Skirt/Step Edge Strips Not Be Ignored When They Fall Off or Wear Out? In escalators, escalator decorative strips, also known as escalator step edge strips or yellow step demarcation lines, are installed on the edges of escalator steps. Their main purpose is to improve step boundary visibility and help passengers better identify […]
Elevator Control Cabinet Upgrade: Key Components Check
Why Should the Mainboard, Inverter, and Contactor Be Checked Together During Elevator Control Cabinet Upgrades? With the increasing demand for modernization of old elevators, elevator control cabinet upgrades have become an important solution to improve operating safety and reliability. However, in actual elevator modernization projects, some projects only replace the control cabinet while ignoring the […]
Problems Caused by Loose Escalator Tension Chains
What Problems Can Loose or Worn Escalator Tension Chains Cause? In the escalator drive system, the escalator tension chain is an important component of the escalator tensioning device. It mainly transfers the movement of the tensioning mechanism to ensure that the step chain maintains stable tension. When the tension chain becomes loose, elongated, or worn, […]
Problems Caused by Incorrect Elevator Button Size
What Installation Problems Can Be Caused by Incorrect Elevator Button Size? In elevator modernization and maintenance projects, elevator buttons may be small components, but their size compatibility directly affects installation performance and service life. Due to differences in elevator models, control panel structures, and button panel designs, selecting the wrong elevator button size can easily […]
Why Can’t the Elevator ARD Start Normally?
Why Can’t the Elevator ARD Start Normally? The elevator ARD (Automatic Rescue Device) is an important safety system in modern elevators. When the main power supply suddenly fails, the ARD uses the elevator emergency power supply to drive the traction machine, move the elevator car to the nearest floor, and automatically open the doors to […]
Why Do Elevator Button LED Lights Fail Frequently?
Why Do Elevator Button LED Lights Fail Frequently? In modern elevator systems, elevator button LED lights are not only used to indicate button status but also play an important role in improving passenger experience and displaying floor registration. Compared with traditional bulbs, LEDs offer advantages such as longer service life, lower energy consumption, and stable […]
Why Step Roller Bearing Failure Causes Noise
Why Does Escalator Step Roller Bearing Failure Cause Operating Noise? In an escalator operating system, the escalator step roller plays a vital role in supporting the steps and ensuring smooth movement along the guide rails. At the heart of the step roller is the escalator bearing, which enables low-friction rotation. When the bearing becomes worn, […]
Why Worn Traction Sheave Grooves Cause Rope Slippage
Why Does Worn Elevator Traction Sheave Grooves Cause Steel Wire Rope Slippage? In an elevator traction system, the elevator traction sheave transmits power through the friction between its rope grooves and the elevator steel wire ropes, allowing the car and counterweight to move smoothly. The traction sheave does not simply support the ropes—it relies on […]
Why Does Escalator Step Chain Elongate?
Why Does Escalator Step Chain Pitch Increase? How to Determine Whether Replacement Is Needed? The escalator step chain is a core transmission component that drives the continuous circulation of escalator steps. Its condition directly affects step synchronization, transmission accuracy, and overall escalator safety. During long-term operation, many maintenance engineers notice that the step chain becomes […]
Why Do Escalator Steps Develop Cracks or Breakage?
Escalator steps are one of the most important load-bearing components of an escalator system. They must continuously withstand passenger weight, impact loads, and repeated fatigue stress during operation. Once cracks or breakage occur, they can reduce operating safety and may lead to step jamming, comb plate collision, or unexpected shutdowns. Therefore, during escalator maintenance, the […]
