Electrical Hazards - Guardian 4721 Repair Manual

• For safety reasons, Generac recommends that this equipment be installed, serviced and repaired by an
authorized service dealer or other competent, qualified electrician or installation technician who is
familiar with applicable codes, standards and regulations. The operator also must comply with all
such codes, standards and regulations.
• Installation, operation, servicing and repair of this (and related) equipment must always comply with
applicable codes, standards, laws and regulations. Adhere strictly to local, state and national electrical
and building codes. Comply with regulations the Occupational Safety and Health Administration
(OSHA) has established. Also, ensure that the generator is installed, operated and serviced in accor-
dance with the manufacturer's instructions and recommendations. Following installation, do nothing
that might render the unit unsafe or in noncompliance with the aforementioned codes, standards, laws
and regulations.
• The engine exhaust fumes contain carbon monoxide gas, which can be DEADLY. This dangerous gas, if
breathed in sufficient concentrations, can cause unconsciousness or even death. For that reason, ade-
quate ventilation must be provided. Exhaust gases must be piped safely away from any building or
enclosure that houses the generator to an area where people, animals, etc., will not be harmed. This
exhaust system must be installed properly, in strict compliance with applicable codes and standards.
• Keep hands, feet, clothing, etc., away from drive belts, fans, and other moving or hot parts. Never
remove any drive belt or fan guard while the unit is operating.
• Adequate, unobstructed flow of cooling and ventilating air is critical to prevent buildup of explosive
gases and to ensure correct generator operation. Do not alter the installation or permit even partial
blockage of ventilation provisions, as this can seriously affect safe operation of the generator.
• Keep the area around the generator clean and uncluttered. Remove any materials that could become
hazardous.
• When working on this equipment, remain alert at all times. Never work on the equipment when physi-
cally or mentally fatigued.
• Inspect the generator regularly, and promptly repair or replace all worn, damaged or defective parts
using only factory-approved parts.
• Before performing any maintenance on the generator, disconnect its battery cables to prevent acciden-
tal start-up. Disconnect the cable from the battery post indicated by a NEGATIVE, NEG or (–) first.
Reconnect that cable last.
• Never use the generator or any of its parts as a step. Stepping on the unit can stress and break parts,
and may result in dangerous operating conditions from leaking exhaust gases, fuel leakage, oil leakage,
etc.
• All generators covered by this manual produce dangerous electrical voltages and can cause fatal electri-
cal shock. Utility power delivers extremely high and dangerous voltages to the transfer switch as well as
the standby generator. Avoid contact with bare wires, terminals, connections, etc., on the generator as
well as the transfer switch, if applicable. Ensure all appropriate covers, guards and barriers are in place
before operating the generator. If work must be done around an operating unit, stand on an insulated,
dry surface to reduce shock hazard.
• Do not handle any kind of electrical device while standing in water, while barefoot, or while hands or
feet are wet. DANGEROUS ELECTRICAL SHOCK MAY RESULT.
• If people must stand on metal or concrete while installing, operating, servicing, adjusting or repairing
this equipment, place insulative mats over a dry wooden platform. Work on the equipment only while
standing on such insulative mats.
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GENERAL HAZARDS

ELECTRICAL HAZARDS

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