Always connect the grounding lead, if supplied in a power line cable, to the grounded switch box or
building ground. If not provided, use a separate grounding lead. Ensure that the current
(amperage)
capacity of the grounding lead will be adequate for the worst fault current situation. Refer to the
National Electrical Code ANSI/NFPA 70 for details. Do not remove plug ground prongs. Use
correctly mating receptacles.
b. Output Cables and Terminals
Inspect cables frequently for damage to the insulation and the connectors. Replace or repair
cracked or worn cables immediately. Do not overload cables. Do not touch output terminal while
equipment is energized.
3.
Service and Maintenance
This equipment must be maintained in good electrical and mechanical condition to avoid hazards
stemming from disrepair. Report any equipment defect or safety hazard to the supervisor and
discontinue use of the equipment until its safety has been assured. Repairs should be made by
qualified personnel only.
Before inspecting or servicing electrically-powered equipment, take the following precautions:
a. Shut OFF all power at the disconnecting switch or line breaker before inspecting or servicing
the equipment.
b. Lock switch OPEN
(or remove line fuses)
so that power cannot be turned on accidentally.
c. Disconnect power to equipment if it is out of service.
d. If troubleshooting must be done with the unit energized, have another person present who is
trained in turning off the equipment and providing or calling for first aid.
4.
Fire And Explosion Prevention
Fire and explosion are caused by electrical short circuits, combustible material near engine exhaust
piping, misuse of batteries and fuel, or unsafe operating or fueling conditions.
a. Electrical Short Circuits and Overloads
Overloaded or shorted equipment can become hot enough to cause fires by self destruction or by
causing nearby combustibles to ignite. For electrically-powered equipment, provide primary input
protection to remove short circuited or heavily overloaded equipment from the line.
b. Batteries
Batteries may explode and/or give off flammable hydrogen gas. Acid and arcing from a ruptured
battery can cause fires and additional failures. When servicing, do not smoke, cause sparking, or
use open flame near the battery.
c. Engine Fuel
Use only approved fuel container or fueling system. Fires and explosions can occur if the fuel tank is
not grounded prior to or during fuel transfer. Shut unit
DOWN
before removing fuel tank cap.
DO
NOT
completely fill tank, because heat from the equipment may cause fuel expansion overflow.
Remove all spilled fuel
IMMEDIATELY
, including any that penetrates the unit. After clean-up, open
equipment doors and blow fumes away with compressed air.
5.
Toxic Fume Prevention
Carbon monoxide - Engine exhaust fumes can kill and cause health problems. Pipe or vent the exhaust
fumes to a suitable exhaust duct or outdoors. Never locate engine exhausts near intake ducts of air
conditioners.
6.
Bodily Injury Prevention
Serious injury can result from contact with fans inside some equipment. Shut
DOWN
such equipment
for inspection and routine maintenance. When equipment is in operation, use extreme care in doing
necessary trouble-shooting and adjustment. Do not remove guards while equipment is operating.
OM-2084 / Operation and Maintenance Manual
90CU24 / Series 500392 Generator Sets
Safety Warnings
November 27/1997
Page 2
