New Cosmos Electric KS-7D, Instruction Manual

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3) Alarm Test
▪
Check that an alarm activates correctly by referring to 7-4-5.
“Alarm Test”.
4) Zero Adjustment
▪
Check that the displayed concentration is
“0ppm” while in clean air.
If
“0 ppm” is not displayed, perform a zero adjustment (refer to 7-4-3. “Zero Adjustment”).
5) Span Adjustment (Gas Calibration)
▪
To ensure reliable gas sensor performance, perform a span adjustment at least once a year.
6) Sensor Replacement
▪
It is highly recommended to replace the sensor every three years when used in a normal
environment. However, if any abnormality, e.g. a significant decrease in sensor sensitivity, is
found during a periodic inspection or daily check, the sensor needs to be replaced. Contact
your New Cosmos representative for sensor replacement.
▪
Perform an alarm test in accordance with applicable local laws and regulations. For
example, an applicable law in Japan specifies that alarm activation must be checked by
performing a circuit check once every month.
▪
An alarm test activates the external relay contacts of this detector. If the detector
’s
external relay contacts are used to activate external devices
’ interlocks, etc., notify the
people concerned then release the interlocks of the external devices, as needed in order
to prevent a possible activation of the external relay contacts.
CAUTION
▪
Contact your New Cosmos representative for span adjustment or sensor replacement
(fees apply). Proper gas detection is not possible without correct adjustments.
CAUTION
This device counts every one hour when the power is on. As the accumulated time
reaches one year, the buzzer will sound and
“Sensor Replacement” will be
displayed on LCD
NOTE
▪
Even if the detector is unused for a long period of time, replace the sensor three
years from the purchase date. Contact your New Cosmos representative for
sensor replacement (fees apply).
▪
This detector counts each hour while it is on. When the total operating time
reaches three years, sensor replacement alert will be notified by audio alarm and
onscreen indication. The audio alarm sounds at a one-minute interval. To mute
the audio alarm, press the RESET button. The muted audio alarm will become
audible, once the detector is power cycled. To mute the resumed audio alarm,
press the RESET button.
NOTE