GE Industrial Solutions H2007001 G11 Series - Manual (Page 15)

Infinity D Power System Installation Guide: +24V Systems H2007001
Issue 2.0, June 4, 2009 15
Precautions
When working on or using this type of equipment, the following precautions should be
noted:
• This unit must be installed, operated, and serviced, only by qualified technical
personnel, who have the necessary knowledge and practical experience with electrical
equipment and who understand the hazards that can arise when working on this type
of equipment. Equipment in these locations will contain parts at HAZARDOUS
energy levels that can be directly accessed and are only protected by guarding and/or
warning.
• The equipment may be powered by multiple ac inputs. Disconnect all AC branch
circuits before servicing. Do not disconnect grounding, bonding conductors, or
permanent bonding provisions unless all ac inputs are disconnected.
• High leakage current exists. Grounding/Earth connection must be provided before
connecting supply.
• Batteries may be connected in parallel with the output of the rectifiers. Turning off
the rectifiers will not necessarily remove power from the bus. Make sure the battery
power is also disconnected and/or follow safety procedures while working on any
equipment that contains hazardous energy/voltage.
• Hazardous energy and voltages are present in the unit and on the interface cables that
can shock or cause serious injury. Follow all safety warnings and practices when
servicing this equipment. When equipped with ringer modules, hazardous voltages
will be present on the ringer output connectors.
In addition to proper job training and safety procedures, the following are some basic
precautions that should always be used:
• Use only properly insulated tools.
• Remove all metallic objects (key chains, glasses, rings, watches, or other jewelry).
• Wear safety glasses. Fuses can produce sparks. High energy levels on buses and
distribution components can produce severe arcing.
• Test circuits before touching.
• Lock out and tag circuit breakers/fuses when possible to prevent accidental turn on.
• Be aware of potential hazards before servicing equipment.
• Identify exposed hazardous electrical potentials on connectors, wiring, etc. (note the
condition of these circuits, especially wiring).
• Use care when removing or replacing covers; avoid contacting circuits.