NE-M Installation Guide
H5692448
850050111
Issue 03 August 2017
87
Precautions
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Install, service, and operate equipment only by professional, skilled and qualified 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.
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Disconnect batteries from outputs and/or follow safety procedures while working on equipment. Batteries may be connected in
parallel with the output of the rectifiers. Turning off the rectifiers will not necessarily remove power from the bus.
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Do not disconnect permanent bonding connections unless all power inputs are disconnected.
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Verify that equipment is properly safety earth grounded before connecting power. High leakage currents may be possible.
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Exercise care and follow all safety warnings and practices when servicing this equipment. Hazardous energy and voltages are present
in the unit and on the interface cables that can shock or cause serious injury. When equipped with ringer modules, hazardous voltages
will be present on the ringer output connectors.
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Use the following precautions in addition to proper job training and safety procedures:
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Use only properly insulated tools.
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Remove all metallic objects (key chains, glasses, rings, watches, or other jewelry).
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Follow Lock Out Tag Out (LOTO) procedures: customer specified, site specific, or general as appropriate.
Disconnect all power input before servicing the equipment. Check for multiple power inputs.
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Wear safety glasses.
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Follow Personal Protective Equipment requirements: customer specified, site specific, or general as appropriate.
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Test circuits before touching.
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Be aware of potential hazards before servicing equipment.
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Identify exposed hazardous electrical potentials on connectors, wiring, etc.
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Avoid contacting circuits when removing or replacing covers;
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Use a personal ESD strap when accessing or removing electronic components.
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Follow procedures for working at heights more than 4ft above the floor: customer specified, site specific, or general as appropriate.
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Personnel with electronic medical devices need to be aware that proximity to DC power and distribution systems, including batteries
and cables, typically found in telecommunications utility rooms, can affect medical electronic devices, such as pacemakers. Effects
decrease with distance.
