What is mechanical problem of lift/elevator?
Answers
Answer:
Hope This Will Help You
Explanation:
Problems with elevators
1. Problem: Worn Sheaves
Worn sheaves place extra wear on ropes, which in turn increases the level of wear on sheaves. This creates a cycle of destruction for both key components.
Sheaves can be regrooved or replaced to prevent premature hoist rope failure, so be sure to check groove profiles to verify the fit between the ropes and the sheave. Simple tools are available with magnetic standards and a straight edge to visually check if the grooves on the sheave a wearing evenly.
2. Problem: Power failure
Elevators demand a great deal of power from commercial building utility systems, so updates to the system’s voltage can affect motor operations or potentially even damage the elevator system. Elevators with any history of motor failures or operation issues should undergo a power quality survey.
Infrared thermography measures drastic temperature changes and can identify possible trouble spots before they cause costly system failures. Common faults such as over/under voltage can be seen easily with power quality surveys and fuses that are running hot can be quickly seen with infrared imaging before a motor loses a phase.
3. Problem: Noisy bearings or bearing malfunction
Bearing malfunction causes more than half of all motor failures. Noisy bearings are often attributed to vibrations within the motor. While variable frequency drives are helpful for decreasing your motor’s energy use, they introduce common mode current — a damaging byproduct that can increase these vibrations to dangerous levels through premature bearing wear caused by stray current.
To address this challenge, consider using an inductive absorber, such as CoolBLUE, to absorb the currents and protect your system from potential breakdowns. Additionally, ensure that all grounds are secured and connected to minimize troubles caused by electrical noise on the ground that may trip out systems or cause false counts in the system.