Maintenance of Hydraulic Lifts

DateNovember-December, 2017 Bülent Özbelli - Pera Engineering General Manager Print

No matter how well a lift has been produced, it will not have secure and reliable operation unless it is well maintained.

Regular maintenance and inspection by experts on the lifts used by millions of people every day are compulsory for the reliable operation of the lift and human safety.

Hydraulic lifts are safer, as they do not require maintenance and replacement of parts and the counterweight and complex rope system not involved during the repair process. In addition, wear is quite low, as the ropes and pulleys do not run with friction. The need for replacement of parts is rare.

It is the most important detail when comparing the maintenance operation of friction-driven lifts with hydraulic lifts. As it is also understood from its name, the friction ensures the friction process of the driven ones, and ensures the decrease of friction of hydraulic lifts.

There is always an effort to prevent the friction within the shaft, car guidance and both lift models. In order to ensure cozy and proper car movement for the drive process:

  • As the car movement in electric lifts is provided by the friction between the steel rope and drive pulley, sufficient amount of vibration-free friction must be ensured.
  • On the other hand, as the car movement in hydraulic lifts is provided by oil flow, easy oil flow must be ensured with a hose at an appropriate diameter and shortest length and the minimum twist (crooked), thus ensuring the minimum friction.

Special attention must be paid to the following for the maintenance operation of hydraulic lifts:

  • Operating oil heat,
  • Oil leakage (dribble),
  • System pressure control

With the checks to be performed easily on these three points, problems that could arise later may be eliminated.

During maintenance, the person involved in the process must perform the task carefully with the awareness and responsibility in view of the fact that, first, his/her own and other persons’ health are at risk. Installation and maintenance of lifts must be carried out with great attention, due to the environment of the lifts. The staff involved in the installation and maintenance processes of the lift are at risk of electrical accidents, being caught between the cab and shaft, or falling into the shaft pit, all of which may result in death. All employees are responsible for preventing such accidents. The employer should establish an occupational health and safety policy for the employees, and ensure that the employees adopt it.

Some companies, unfortunately, employ unqualified workers, use unsecure equipment, provide inappropriate working clothes and take improvident and careless steps in order to lower costs due to the growth of sector and increasing competition, thus increasing the risk of working accidents. Similarly, the working accidents may be caused by failing to pay the necessary attention to these processes, especially given the increasing number of elevators and the need of maintenance. In recent years, the surveillance of Human Health and Occupational Safety has been more significant and strict, in order to eliminate such accidents. 🌐