The other part inside the power unit is a small chamber whose function is to reduce the fluctuation in the pressure and volume of the oil and also to prevent the noise and impact of the oil inside the system, pipes and fittings. It should be noted that the direction of rotation of the electric motor and pump in the performance of the direction of rotation of the electric motor and pump is very effective in the performance of this system, therefore in the initial start-up of the motor and electric pump should be considered for its rotation. The start of the electric motor is of the star or triangle star type, and the hydraulic pumps are generally of the helical type. Due to the friction inside the hydraulic pipes as well as the bending of the pipes, it is necessary to observe some basic principles in piping.

Hydraulic elevator parts