Handling Electricity; Conduct During Accidents - CAB MACH 4.3S/200B Service Manual

1 Introduction
6
1.3

Handling Electricity

The 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 protective
•
conductors.
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 when
required.
• Only use one hand when working with electronic circuits. Keep the other hand behind your back or in a pocket. By
doing 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.
•
6