Escalator main function,
Broken drive-chain device
;
Wrong
、phase failure;
Broken step chain device
;
Handrail exit-entry guard
;
Working brake
;
Emergency stop button
;
Direction reversal device
;
Comb safety device
;
Skirt safety device
;
Step trap safety device
;
Motor overpower protection
;
Over speed governor switch
;
Safety grounding protection,
Break-down display function
;