Please find bellow the response from a friend of mine who is a Chinese native (PRC), professor at The Hong Kong Polytechnic University (PolyU), very fluent in Chinese dialects. Hope that would help.
'(...) Some traditional characters in your pictures lead me to believe that it is Taiwanese. Why that ? The entire mainland China or PRC is writing in simplified characters, while Taiwan, Hong Kong, Macau are the only places still using sometimes traditional ones. There are 2 traditional characters which I seem to sense Taiwanese.
There are about 10 native languages of Taiwan, about a dozen different languages spoken on the island of Taiwan, the difference is similar to the difference between Spanish - Italian - French even if these 3 European languages have the same alphabet.
If a few characters appear to be correct at first glance, the whole text is actually misspelled. Perhaps the text was based on a clear original idea but the way of writing is very confusing therefore the instructions are simply not to be trusted.
I would give up with the experimentation of translation then I'd surround myself with a good marine qualified electrician'.