Technician Team Exam - BioPak 240R Taken from the 2018 National Mine Rescue Contest held in Lexington, Kentucky Progress Indicator: Question 1 of 30 1.  As stated in the BioPak 240 R Cautions and Limitations, which of the following is TRUE: Choices: Never substitute, modify, and, or omit parts All users of the SCBA must be trained by Biomarine qualified instructors All repairs beyond the scope of this manual must be performed by Biomarine or qualified Biomarine representative