12 Safety Precautions and Instructions TP-6356 4/12
Grounding electrical equipment.
Hazardous voltage can cause
severe injury or death. Electrocution
is possible whenever electricity is
present. Ensure you comply with all
applicable codes and standards.
Electrically ground the generator set,
transfer switch, and related equipment
and electrical circuits. Turn off the main
circuit breakers of all power sources
before servicing the equipment. Never
contact electrical leads or appliances
when standing in water or on wet
ground because these conditions
increase the risk of electrocution.
High voltage test. Hazardous
voltage can cause severe injury or
death. Follow the instructions of the
test equipment manufacturer when
performing high-voltage tests on t he
rotor or stator. An improper test
procedure can damage equipment or
lead to generator set failure.
Testing the photo transistor circuit
board. Hazardous voltage can
cause severe injury or death. When
the end cover is removed, do not
expose the photo transistor circuit
board mounted on the generator set
end bracket to any external light
source, as exposure to light causes
high voltage. Keep foreign sources of
light away from the photo transistor
circuit board during testing. Place
black electrical tape over the LED on
the circuit board before starting the
generator set.
Installing the photo transistor
circuit board. Hazardous voltage
can cause severe injury or death.
Ensure that the foil side of the photo
transistor circuit board, the end of the
shaft, and the threaded holes are clean
and free of metal particles and chips.
Metal debris may short-circuit the
photo transistor circuit boardand cause
hazardous voltage in the generator set.
Do not reconnect the generator set to
the load until the AC voltmeter shows
the correct output.
Welding on the generator set. Can
cause severe electrical equipment
damage. Before welding on the
generator set perform the following
steps: (1) Remove the battery cables,
negative (--) lead first. (2) Disconnect
all engine electronic control module
(ECM) connectors. (3) Disconnect all
generator set controller and voltage
regulator circuit board connectors.
(4) Disconnect the engine battery-
charging alternator connections.
(5) Attach the weld ground connection
close to the weld location.
Installing the battery charger.
Hazardous voltage can cause
severe injury or death. An
ungrounded battery charger may
cause electrical shock. Connect t he
battery charger enclosure to the ground
of a permanent wiring system. As an
alternative, install an equipment
grounding conductor with circuit
conductors and connect i t to the
equipment grounding terminal or the
lead on the battery charger. Install the
battery charger as prescribed in the
equipment manual. Install the battery
charger in compliance with local codes
and ordinances.
Connecting the battery and the
battery charger. Hazardous voltage
can cause severe injury or death.
Reconnect the battery correctly,
positive to positive and negative to
negative, to avoid electrical shock and
damage to the battery charger and
battery(ies). Have a qualified
electrician install the battery(ies).
Short circuits. Hazardous
voltage/current can cause severe
injury or death. Short circuits can
cause bodily injury and/or equipment
damage. Do not contact electrical
connections with tools or jewelry while
making adjustments or repairs.
Remove all jewelry before servicing the
equipment.
Engine block heater. Hazardous
voltage can cause severe injury or
death. The engine block heater can
cause electrical shock. Remove the
engine block heater plug from the
electrical outlet before working on the
block heater electrical connections.
Electrical backfeed to the utility.
Hazardous backfeed voltage can
cause severe injury or death. Install
a transfer switch in standby power
installations to prevent the connection
of standby and other sources of power.
Electrical backfeed into a utility
electrical system can cause severe
injury or death to utility personnel
working on power lines.
Testing live electrical circuits.
Hazardous voltage or current can
cause severe injury or death. Have
trained and qualified personnel take
diagnostic measurements of live
circuits. Use adequately rated test
equipment with electrically insulated
probes and follow the instructions of the
test equipment manufacturer when
performing voltage tests. Observe the
following precautions when performing
voltage tests: (1) Remove all jewelry.
(2) Stand on a dry, approved electrically
insulated mat. (3) Do not touch the
enclosure or components inside the
enclosure. (4) Be prepared for the
system to operate automatically.
(600 volts and under)
Airborne particles.
Can cause severe injury or
blindness.
Wear protective goggles and clothing
when using power tools, hand tools,
or compressed air.
WARNING
Servicing the generator set when it
is operating. Exposed moving parts
can cause severe injury or death.
Keep hands, feet, hair, clothing, and
test leads away from the belts and
pulleys when the generator set is
running. Replace guards, screens, and
covers before operating the generator
set.
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