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Safety Precautions
Before using this product, the user is requested to read the following precautions carefully to ensure the
safety. Safety precautions must be taken by every user to prevent accidents.
The safety requirements are classified into “warning” and “caution” according to the following interpreta-
tions:
Warning
Suggesting that the user's mishandling can
result in personal death or serious injury.
Caution
Suggesting that the user's mishandling can result
in personal injury or damage to the property.
“Any control system design should take into account that any part of the system has the potential to fail”.
“The most dangerous condition of the system equipped with this product is continued heating, and the ma-
chine should be designed to automatically stop heating even if alarm is not issued at the time of failure of this
product or due to any other reason”.
The following are the most common cases where continued heating cannot be detected with this product.
1) Failure to issuing an alarm even when this product fails
2) Disengagement of the temperature sensor from the system
3) A short circuit in the thermocouple wiring
In any application where physical injury or destruction of equipment might occur, we recommend the instal-
lation of independent safety equipment, with a separate temperature sensor, to disable the heating circuit in
case of overheating.
Digital thermostat alarm signal is not designed to function as a protective measure in case of product failure.
WARNING
Over-temperature Protection
