SWDM40 OPERATION & MAINTENANCE MANUAL
1.8.4 Safety Handle
Safety handle is installed on the left operating box of the cab.When the safety handle is
turned into a vertical position,the hydraulic system is cut off and all hydraulic action stops.The
hydraulic system is connected and all hydraulic functions are restored when the handle is pulled
to the horizontal state.(The figure is vertical state.)
1.8.5 Height Limit
In the construction of the rig,the height limit switch can prevent the overlifting of the
winch,avoid touching between the drill bar and mast cathead.
Main winch
height limit
switch
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