1-1
1. Safety precautions
1.1 Types and meanings of warning terms
This instruction manual divides precautions into the following four categories according to the
level of hazards (or the severity of the accident).
Be sure to understand the meanings of the following terms and comply with the content
(instructions) of the instruction manual.
Warning Term Meaning
Danger
Indicates an imminently hazardous situation. Failure to observe the
procedures or instructions will result in death or serious injury.
Warning
Indicates a potentially hazardous situation. Failure to observe the
procedures or instructions may result in death or serious injury.
Caution
Indicates a potentially hazardous situation. Failure to observe the
procedures or instructions will result in minor or moderate injury or cause
damage to equipment or devices.
Note Indicates information that is in particular to be noted or emphasized.
1.2 Safety precautions
1.2.1. Precautions for placement and installation
(1) Move and place the fan considering the center of gravity and weight.
(2) Ensure the installment work according to the instruction manual.
(3) Do not install it in any places where is exposed to direct flame or high temperature.
(4) Do not install it in any places with high humidity such as bath room.
(5) Do not install it in any places where toxic gases are produced from acids, alkalis, organic solvent,
paint or other substances or where corrosive gases are produced, for example in machine room
or chemical plant.
(6) Install the outdoor air intake in a position far away from the exhaust vents of combustion gas, etc.
(7) Be sure to install a ground fault interrupter to the main power.
(8) Only qualified personnel such as electrical engineers are allowed to carry out the electrical wiring
work. Before working, be sure to turn off the main power.
(9) Do not expose the motor to water.
If it gets wet, the resulting short circuit and/or insulation degradation of the electric circuit may
damage the fan.
(10) Do not place any combustibles or obstacles that may hinder ventilation around the motor.
(11) Arrange parts with a drain outlet such that proper drainage is ensured.
(12) Install a protective wire mesh etc. to the open air intake.
1.2.2. Precautions for operation
(1) Before starting the fan, ensure that all the relevant workers are informed of the operation and that
there are no workers in the dangerous zone.
(2) Only those who are authorized by the site manager are allowed to operate the fan.
(3) Before turning on the power, be sure to attach the cover to the terminal box of the motor.
(4) Ensure to apply the rated voltage to the fan.
(5) When the fan is running, never touch any parts of the unit unless it is absolutely necessary.
(6) Do not insert your finger or a rod-like object into the air intake or outlet.
(7) Do not insert your fingers or other objects into the opening of the motor. Failure to observe this
may cause an electric shock, injury, or fire.
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