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M3LM OPERATING MANUAL EM-2663-B Rev.4
2. SAFETY PRECAUTIONS
(that must be observed)
The following signs are used in this manual to provide precautions required to ensure safe usage of the unit. Please under-
stand these signs and graphic symbols, read the manual carefully and observe the description.
The following signs show seriousness of safety hazard or damage occurred when used wrongly with the signs ignored.
Indicates a potentially hazardous situation which, if not avoided, may result in
serious injury or death.
Indicates a potentially hazardous situation which, if not avoided, may result in
injury or in property damage.
Indicates prohibitions.
Indicates mandatory cautions.
Indicates cautions.
For safety, make sure that wiring is performed by
qualified personnel only.
• Failure to do so may result in a fire, electric
shock or injury.
Do not splash water on the unit.
• Doing so may result in a fire, electric shock or
injury.
Do not touch the terminals while the power is on.
• Doing so may result in electric shock.
Provide safety measures outside of the unit to
ensure safety in the whole system if an abnormal-
ity occurs due to malfunction of the unit or another
external factor affecting the unit’s operation.
Check the connection diagram carefully before
wire connection.
• Failure to do so may result in malfunction, a fire
or electric shock.
Stop using the unit immediately if smokes, unusual
smell or abnormal noises come(s) from it.
• Using the unit continuously may result in a fire
or electric shock.
Tighten the terminal screws of the Euro type con-
nector terminal blocks with a specified torque.
• Excessive fastening may result in damage of
the screws and loose screws may occasionally
result in ignition.
Stop using the unit if it is dropped or damaged.
• Using the unit continuously may result in a fire
or electric shock.
PROHIBITION
WET HANDS
Do not operate buttons with a wet hand or finger.
• Doing so may result in electric shock.
Do not throw the unit into the fire.
• Doing so may result in rupture of the electronic
component.
