viiBHT-500BSAFETY PRECAUTIONSBe sure to observe all these safety precautions. Please READ through this manual carefully. It will enable you to use the BHT and CU correctly. Always keep this manual nearby for speedy reference.Strict observance of these warnings and cautions is a MUST for preventing accidents that could result in bodily injuryand substantial property damage. Make sure you fully understand all definitions of these terms and symbols givenbelow before you proceed to the text itself.Alerts you to those conditions that could cause serious bodily injury or death if the instructionsare not followed correctly.Alerts you to those conditions that could cause minor bodily injury or substantial propertydamage if the instructions are not followed correctly.Meaning of SymbolsA triangle ( ) with a picture inside alerts you to a warning of danger. Here you see the warning for electricalshock.A diagonal line through a circle ( ) warns you of something you should not do; it may or may not have a pictureinside. Here you see a screwdriver inside the circle, meaning that you should not disassemble.A black circle ( ) with a picture inside alerts you to something you MUST do. This example shows that youMUST unplug the power cord.