213.5(1)No person shall alter a mobile crane in such a way as to render ineffective a safety device or limit switch installed on the crane.

213.5(2)Notwithstanding subsection (1), a person may alter a mobile crane to render ineffective a safety device or limit switch installed on the crane if the alteration is certified in writing by the manufacturer of the device or switch, or an engineer, as affording protection equal to or greater than the protection afforded by the safety device or limit switch.

213.5(3)An operator shall not use, and an employer shall not permit to be used, a mobile crane if the crane has been altered so as to render ineffective a safety device or limit switch installed on the crane.

213.5(4)Subsection (3) does not apply where the alteration has been certified in writing by the manufacturer of the safety device or limit switch, or an engineer, as affording protection equal to or greater than the protection provided by the safety device or limit switch.