Ono Sokki CF-4700, User Manual

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Optional Hardware
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Checking items when used in the low or high temperature
• The appropriate temperature range for charging the battery pack is 10°C to 35°C.
• To protect the lithium-ion battery, the charging time to the CF-4700 FFT comparator varies depending on the
ambient temperature.
The following is the necessary time for the power source backup function becomes available, along with the
corresponding ambient temperature (when started with the battery pack level 0%).
Ambient temperature Time for the power source backup function becomes available
35°C to 40°C Approx. 30 minutes
10°C to 35°C Approx. 15 minutes
5°C Approx. 1 hour
0°C Approx. 8 hours
• When continuously used in the ambient temperature 40°C or above, charging of the battery pack may be stopped
to protect the lithium-ion battery.
When the battery pack is continuously used with charging stopped, the battery pack is self-discharged gradually.
While the power source backup function is available, the time until the Normal Operation indication (
) is
switched to the Unavailabe indication ( or ) is about one and half month with a brand-new battery.
• To turn off the power source while the status of the power source backup function is Unavailable ( ),
use the CF-4700 FFT comparator’s power switch only.
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Checking items when comparator is not in use
• If the CF-4700 FFT comparator is kept unused for a long period of time, the battery pack may be fully discharged
because of the standby electricity of the CF-4700 FFT comparator. Use the power source backup function after the
battery is fully charged and the power source backup function becomes available.
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Battery replacement intervals
• Replace the battery approximately every 2 years.
• To replace the battery, purchase the original battery pack only.
• If the battery pack is fully discharged, or it is unused for a long period of time in the low/high temperature
environment, the replacement may be necessary in less than two years due to the battery deterioration.
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Internal battery status display
The following area on the screen displays the battery installation statuses and conditions.
Battery status display