Mitsubishi Electric JR Series Instruction Manual page 3

3-PHASE SQUIRREL-CAGE INDUCTION MOTOR
Thank you for purchasing the Mitsubishi motor.
Before starting use of this 3-phase squirrel cage motor (before starting installation, operation, maintenance
or inspection, etc.), always read this manual and other enclosed documents thoroughly to ensure correct
use. After reading, always store this manual where it can be accessed easily.
The safety precautions are ranked as "DANGER" and "CAUTION" in this Instruction Manual.
DANGER :
CAUTION :
Note that some items described as
situation. In any case, important information that must be observed is described.
[General]
• Do not use this motor in an explosive atmosphere. Use an explosion-proof motor for that type of
atmosphere.
Failing to observe this could lead to injuries or fires, etc. (Refer to page 2.)
• Do not work with a live wire state. Always turn the power OFF before starting work.
Failing to observe this could lead to electric shocks. (Refer to page 7.)
• Only trained persons must perform transportation, installation, piping and wiring, operation,
maintenance and inspection.
Failure to observe this could lead to damage and faults, as well as injuries, electric shocks, or
fires, etc. (Refer to page 7.)
[Piping and wiring]
• Always follow the connection drawing in the terminal box or the instruction manual when
connecting the power cable.
Failure to do so could lead to electric shocks or fires. (Refer to page 8.)
• Do not bend, pull or catch the power cable or motor lead wires with force.
Doing so could lead to electric shocks. (Refer to page 8.)
[Installation and adjustment]
• Always ground the grounding terminal.
Failure to do so could lead to electric shocks. (Refer to page 7.)
• When installing the motor on a ceiling or wall, it could fall depending on the circumstances. Refer
to the catalog or technical documents for details on the applicable range.
Failure to observe this could lead to injuries. (Refer to page 2.)
[Operation]
• Do not operate the motor with the terminal box cover removed. After work, return the terminal box
cover to its original position.
Failure to do so could lead to electric shocks. (Refer to page 9.)
• Never go near or touch the rotating parts (shaft, etc.) during operation.
Failure to observe this could lead to entanglement or injures. (Refer to page 9.)
• Always turn the power switch OFF if a power failure occurs.
Failure to do so could lead to injuries. (Refer to page 9.)
[Maintenance and inspection]
• Always follow the connection diagram in the terminal box or the instruction manual when
connecting the power cable.
Failure to do so could lead to electric shocks or fires. (Refer to page 8.)
SAFETY PRECAUTIONS FOR 3-PHASE SQUIRREL
When a dangerous situation may occur if handling is mistaken leading to fatal or
major injuries.
When a dangerous situation may occur if handling is mistaken leading to medium or
minor injuries, or physical damage.
CAUTION may lead to major results depending on the
CAGE MOTOR
DANGER