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3.5.4 Battery replacement (Rechargeable battery)
<How to replace the rechargeable battery>
·
Always turn off the main power supply to the facility before carrying out the following procedures.
(1) Remove the controller and the binding bands
q
~
e
fastening the harnesses and the harness of the
rechargeable battery.
(2) Disconnect connector
r
from the CPU board.
(3) Remove the harness of the rechargeable battery from wire saddle
t
.
(4) Remove Velcro tape
y
and rechargeable battery
u
.
Check the remaining voltage on the LCD in the battery mode after turning OFF the sensor display mode or
the breaker.
In case the unit is connected to the commercial power supply
·
When the battery is being recharged, the voltage is indicated 0.5 to 1.5V higher because of the
power supply.
(While the battery is being recharged, the characters indicated on the LCD screen blink. Similarly,
when the dry cell battery is used, the characters will blink on the LCD screen. But the battery is not
being recharged.)
·
When no battery is recharged, the voltage is indicated about 1.0V higher because the load is small.
7.6V or more: The battery is being recharged.
Less than 7.6V: Turn ON the commercial power supply to recharge the battery for 14 hours and recheck
the battery voltage. Follow the instructions shown below depending on the result.
7.6V or more: The battery recharge is complete.
Less than 7.6V: The battery may have deteriorated. It is recommendable to replace the battery.
Less than 7.2V: The battery has deteriorated. The battery must be replaced.
(The voltage values are indicated based on the standard temperature at 20˚C. The lower the temperature
becomes, the lower the voltage is.)
Rechargeable battery
⑦
Velcro tape fixing the rechargeable battery
⑥
connector
④
CN48 (BAT)
Binding band
①
Wire saddle
⑤
Binding band
②
Binding band
③
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