5.5　Removable Guard Board and Fixed Guard Board

5.5.1　The lower track and upper guide rail of the removable guard board shall be installed in accordance with the following requirements:

1　The longitudinal and horizontal center lines shall be adjusted，and the measurement by ruler should be carried out，with the allowable deviation of 10.0mm.

2　The elevation shall be adjusted，and the measurement by optical instrument should be carried out，with the allowable deviation of±10.0mm.

5.5.2　During lifting of removable guard board，its verticality shall be adjusted，and the measurement by suspension wire should be carried out，with the allowable deviation of 1.0/1000.

5.5.3　The drive device of removable guard board shall be installed according to the requirement of the design technical document.

5.5.4　The fixed guard board shall be installed according to the following requirements:

1　The longitudinal and horizontal center lines shall be adjusted，and the measurement by ruler should be carried out，with the allowable deviation of 10.0mm.

2　The elevation shall be adjusted，and the measurement by optical instrument should be carried out，with the allowable deviation of±10.0mm.

3　The verticality shall be adjusted，and the measurement by suspension wire should be carried out，with the allowable deviation of 1.0/1000.The deviation direction shall be consistent with that of corresponding items of removable guard board.