Are you the go-to person for the technician team? Perhaps you are referred to as being a subject matter expert on particular types of equipment. Are you confident in your skills and abilities? If so, then you might be ready to write manuals for new biomedical technicians. Let the interviewer know if this task has ever interested you or how you have worked towards it already. If sitting behind a desk writing manuals is not your thing, don't worry! Just state that although you have the knowledge and skills to share with others, you prefer to do so in a hands-on teaching atmosphere.
"I would love the opportunity to share my knowledge with others in the field. Although I have not yet written a manual, this is a challenge I would certainly be up for."
"I'm not quite ready to write a manual but I'm confident with a few more years of experience and some further mentorship, I will be ready."
"I am considered an expert in this field and would have no issues writing a manual for your newcomers. I have written many short training manuals for specific pieces of equipment as well as more formal policy and procedure based manuals for my existing team."