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SJ300 Inverter
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Safety Messages
For the best results with the SJ300 Series inverter, carefully read this manual and all of the
warning labels attached to the inverter before installing and operating it, and follow the instruc-
tions exactly. Keep this manual handy for quick reference.
Definitions and
Symbols
A safety instruction (message) includes a hazard alert symbol and a signal word, WARNING or
CAUTION. Each signal word has the following meaning:
This symbol indicates HIGH VOLTAGE. It calls your attention to items or operations
that could be dangerous to you and other persons operation this equipment. Read the
message and follow the instructions carefully.
This symbol is the “Safety Alert Symbol.” It occurs with either of two signal words:
CAUTION or WARNING, as described below.
WARNING: Indicates a potentially hazardous situation that, if not avoided, can result
in serious injury or death.
CAUTION: Indicates a potentially hazardous situation that, if not avoided, can result
in minor to moderate injury, or serious damage to the product. The situation described
in the CAUTION may, if not avoided, lead to serious results. Important safety
measures are described in CAUTION (as well as WARNING), so be sure to observe
them.
STEP: A step is one of a series of action steps required to accomplish a goal. The
number of the step will be contained in the step symbol.
NOTE: Notes indicate an area or subject of special merit, emphasizing either the
product’s capabilities or common errors in operation or maintenance.
TIP: Tips give a special instruction that can save time or provide other benefits
while installing or using the product. The tip calls attention to an idea that may not
be obvious to first-time users of the product.
Hazardous High Voltage
HIGH VOLTAGE: Motor control equipment and electronic controllers are connected to haz-
ardous line voltages. When servicing drives and electronic controllers, there may be exposed
components with housings or protrusions at or above line potential. Extreme care should be
taken to protect against shock.
Stand on an insulating pad and make it a habit to use only one hand when checking compo-
nents. Always work with another person in case an emergency occurs. Disconnect power before
checking controllers or performing maintenance. Be sure equipment is properly grounded.
Wear safety glasses whenever working on electronic controllers or rotating machinery.