Multi Lift is operated by Electro Hydraulic.
・Upper Side Lift - through hydraulic valve
・Lower Side Lift - direct connection of both side cylinders
When pushing "Up" button, motor runs and gear pump feed the oil to cylinder,
and lift goes up. And Lowering Stop Hook is 『
IN
』position. When releasing
the button, oil flow stops at Check Valve and lift (Cylinder) stops.
When pushing "Down" button, Lowering Stop Hook would be released first, then
Lowering Valve opens and lift goes down. When releasing the button, Lowering
Stop Hook engage and Lowering Valve close and lift stops.
Upper Lift and Lower Lift is to be switched by operating electric valve.
Because the lift is raised through hydraulic cylinder, lift is naturally to be lowering slightly.
Therefore the lift height can not be kept at same height for long time which should be noted.
