New Cosmos Electric KD-12B, Инструкция по эксплуатации

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16. Life Expectancy

The period of designed life expectancy of the product under standard environmental
conditions is approximately five years after the date of purchase.
The period of designed life expectancy after the expiration of the warranty period is a rough
standard on the condition that the product is used with specified gas calibration performed.
New Cosmos, however, does not guarantee the specified period of designed life expectancy.
The product may become unusable before the next calibration is performed.

The life of the catalytic combustion-type sensor incorporated in the KD-12B is approximately
three years after the date of purchase.
The sensor may not detect gas correctly with the lapse of approximately three years. Replace
the sensor at intervals of approximately three years. The life of the sensor is specified on the
condition that the sensor is serviced properly and that the sensor is not exposed to
high-density gas or toxic gas. New Cosmos, however, does not guarantee the specified life of
the sensor.