4©2016. All Rights Reserved. Jeio Tech Co., Ltd• When not in use, turn off the power switch or cut off the power to the instrument bydisconnecting the power plug.1.2.3 Preventative MaintenanceProper maintenance is essential for safety. The maintenance personnel must be awareof the importance of safety in maintenance of the equipment for effectiveness of the unit.Before removing or adjusting parts of the device, shut off all the electrical supply, removeaccessories. The unit must display a warning that it is working.Please ensure that the device is properly connected to a grounded outlet.After repair and maintenance, check the work performed and clean tools.Do not apply the power to the unit until all workers clean the area. The device must bechecked if there are no problems with the unit before operating the machine.1.3 Symbols used in this ManualThe following signal word panels, safety symbols and non-safety symbols are used to alertyou to potential personal injury hazards or information of importance. Obey all safetymessages that follow these symbols to avoid possible personal injury or death.1.3.1 Signal word panelsSignal word panels are a method for calling attention to a safety messages or propertydamage messages and designate a degree or level of hazard seriousness. It consists ofthree elements: a safety alert symbol, a signal word and a contrasting rectangularbackground. The following signal word panels are in accordance with ANSI Z535.4-2007and ISO 3864 standards.Indicates a hazardous situation which, if notavoided, will result in death or serious injuryIndicates a hazardous situation which, if notavoided, could result in death or serious injury.Indicates a hazardous situation which, if notavoided, may result in minor or moderate injuryIndicates a property damage message..