Working principle of elevator 

Villa elevator inspection 

Villa elevators do not require mandatory acceptance, but the time interval for comprehensive inspection of household elevators should not exceed 12 months, especially regarding the effectiveness of the following items; 

a) Door lock device (for sliding doors) 

b) Electrical safety devices; 

c) Grounding continuity; 

d) Support and suspension system; 

e) Drive device and brake; 

f) Devices to prevent free fall and overspeed descent, such as speed limiters and safety clamps; 

g) Alarm system; 

h) Door protection devices (such as safety touch panels and light curtains); 

i) Inspection of the inner surface of the shaft (such as distance, surface, and sharp edges); 

j) Guide rails and boots; 

k) Lighting and emergency lighting; 

l) Emergency operation device; 

m) All identification.