The construction elevator always jumps
The starting current is more than three times the running current, and your air switch is low in the maximum current
Possible causes include: 1, the area that has broken skin in the line, leak the electric trip. There's something wrong with the switch Loose contact points in the line, and bad contact may also jump. It is best to do a thorough examination before closing the lock, and the forced closing is dangerous
The construction elevator of our construction site always jump at the start of the building, always can't find the reason, the reason that can be so, have a person encounter this thing But it used to be normal, and sometimes it's jump, start, jump, start, and sometimes you can do it over and over again,
