1, to understand the structure of escalators, tightening device, rungs, ladder rails, armrest straps, traction chain, comb plate, drive device and other major components name and role.

2, to understand the role of escalator installation protection device, installation position includes: traction chain break protection device, armrest belt entrance safety protection device, ladder subsidence protection device, drive chain break protection device, armrest belt break protection device, brake, mechanical locking device.

3, escalator basic safety operation and use;

4, rung disassembly operation;

5, comb plate adjustment;

6, comb cutting edge plate adjustment;

7, armrest belt tension adjustment;

8, the adjustment of the ladder chain tension;

9, the adjustment of the drive chain;

10, ladder anti-reversal mechanical experiments;

11, upper and lower traction chain safety experiment

12, host chain safety experiment