During the use of hydraulic freight elevators, some users encounter the problem that the hydraulic freight elevators cannot move up and down, which delays the progress of the work. So what are the factors that cause the hydraulic freight elevators to be unable to lift?
Although each hydraulic freight elevator has a function to prevent overload, and small overload won’t affect the motion of the freight elevator, when it comes to long-term overload operation, the hydraulic freight elevator will not be able to move up and down, it is necessary to control the load itself.
Insufficient cylinder oil
When the oil in the cylinder is insufficient, the rail lift pump station can’t generate required lifting pressure to drive the hydraulic freight elevator rise and fall.
Damaged limit switch and low voltage
The damage of the hydraulic freight elevator limit switch and the insufficient voltage is also the reasons why the hydraulic freight elevator cannot go up and down.
Loose emergency oil valve
If the emergency oil valve is not tightened, the oil of the rail lift pump station can only circulate in the oil reservoir, it can not be pumped into the rail oil cylinder, check whether the delay device has been reset, if not, press the stop button directly before lifting.
The above are the factors that cause the hydraulic freight elevator to be unable to lift. We hope you will understand it after reading it. Meanwhile, you must pay attention to the above issues during use to ensure the normal use of the hydraulic freight elevators.