The height of the sub-lift shall not be greater than that of the main lift
2.3.5 Taking the main lift as the benchmark, lift the sub-lift to place the main lift and sub lift at the same level, and turn the red handle to close the
high-pressure valve. When the Main Lift and Sub Lift are adjusted properly, set the Work/Adjust switch to Work, and set the time relay to 1.5~2s.
Main lift
Sub-lift
Oil filling instructions for Sub Lift
2.3.6 Turn the changeover switch on the control panel to the "Main Lift"position, set the time relay to 0, and connect the air supply.
Main Lift
Sub Lift
2.3.7 Press the Up button to lift the main lift to about 30cm (i.e., below the height where the safety device is to be locked, rather
than the highest position; at this time, the two oil-filling ball valves shall be at the Close position).
During oil filling of Sub Lift 30-35cm
Do not lift the main lift to the highest position
2.3.8 Turn the Work/Adjust switch to the Adjust position and set the red handle of the Sub Lift high-pressure valve to the Open position.