1-1
1. Safety precautions
Before using the unit, thoroughly read this “Safety precautions” to properly use the product. Information
described below is vital to safe and proper use of the unit and prevention of hazard and/or damage.
1.1
Explanation of safety indications and graphic symbols
This instruction manual divides safety indications into four categories according to the level of hazard (the
extent of damage/losses and the urgency). In addition, the type of user instructions is indicated with a
graphic symbol.
This manual uses the following signs. Fully understand these terms and symbols before reading this manual
further.
Explanation of the safety indications
Explanation of the graphic symbols
Indications
Meaning
Danger
Indicates an imminently hazardous
situation. Failure to observe this will result
in death or serious injury.
Don’ts
Do not touch
Do not
disassemble
Do not touch
with wet hand
Do not expose
to water
These graphic symbols indicate prohibited actions
(that must not be done).
Warning
Indicates a potentially hazardous
situation. Failure to observe this will result
in death or serious injury.
Do’s
This graphic symbol indicates mandatory actions
(that must be done).
Caution
Indicates a potentially hazardous
situation. Failure to observe this will result
in minor or moderate injury or property
damage.
Caution
Electric shock
hazard
Rotation
hazard
Hot surface
Note
Indicates information that is in particular
to be noted or emphasized.
These graphic symbols indicate existing hazards
to beware of.
1.2 Safety
precautions
The following are important instructions about safety. Be sure to observe these precautions.
Danger
Once the main power is turned on, do not touch any live parts inside or outside the control panel.
A high voltage applied to live parts causes a serious electric shock.
Warning
Properly move the unit according to lifting
instructions.
Otherwise, the unit may fall, resulting in injury and/or
damage.
Do not carry out any work by/on the water supply
unit that is being lifted.
Otherwise, the unit may fall, resulting in injury and/or
damage.
Only those who are authorized by the site
manager may operate the water supply unit.
Operation by unskilled personnel may lead to an unforeseen
accident.
Only those who are trained to handle the water
supply unit may install, maintain, and inspect it.
Operation by unskilled personnel may lead to an unforeseen
accident.
Only qualified personnel, such as licensed
electrical engineers, are allowed to carry out any
electric work.
Otherwise, it may lead to an electric shock, fire, failures,
and/or other problems.
Use the wiring equipment and devices compliant
with the use conditions, and carry out wiring work
safely and securely according to the technical
standards for electrical facilities, as well as the
indoor wiring regulations.
Otherwise, it may lead to an electric shock, fire, and/or other
problems.
Before starting wiring work, be sure to turn off the
main power and confirm that the pilot lamp is
turned off. Take measures to prevent erroneous
power supply.
Otherwise, it may lead to an electric shock.
At the power supply source, be sure to install a
ground fault interrupter dedicated to this unit.
Otherwise, it may lead to an electric shock, fire, and/or other
problems.
