CAB MACH 4.3S/200B Service Manual

Also see for MACH 4.3S/200B: Operator's manual

6 61 Introduction1.3 Handling ElectricityThe following operations may only be performed by qualified electricians:• Any labor performed on electrical component groups.• Operations performed on the opened device while it is connected to the power grid.General precautions when commencing maintenance operations:• Locate the emergency power and/or mains switch so it is reached quickly should the need arise.• Disconnect the power when performing the following tasks:- Removing or installing the power supply.- Performing work in the vicinity of opening power connectors.- Mechanical testing of power units.- Altering anything to do with the circuitry.• Check that the device is not live.• Check the work area for any potential hazards such as damp or wet floors, defective extension cords or protectiveconductors.Additional precautions when dealing with open voltage supply:• Request a second person to stay in the vicinity and operate the emergency powers or mains switch if and whenrequired.• Only use one hand when working with electronic circuits. Keep the other hand behind your back or in a pocket. Bydoing so you prevent electricity from flowing though the body.1.4 Conduct during Accidents• Act with exception caution and calmness.• Do not put yourself at risk.• Switch off the power.• Request medical assistance or call an emergency doctor.• If required and possible perform first aid.