Changing The Lithium Backup Battery - Omron NT20M Operation Manual

Changing the Lithium Backup Battery

8-2 Changing the Lithium Backup Battery
Replacing the Battery
1, 2, 3... 1.
Caution Be sure not to touch the internal circuitry when replacing the battery with the
Caution The lithium battery can explode if placed into a fire, or it can explode, burn, or
A lithium battery is used in the NT20M and in the NT2000M. If the BAT LOW
indicator on the front panel lights, replace the battery within ten days.
Battery model
Battery backup time
Replacement time
Turn the power off. If the power has not been on, turn it on for at least
one minute and then turn it off again before replacing the battery.
2. Take off the battery cover on the back of the PT.
3. Remove the battery from the connector and put in a new battery. Be
sure that the connector is straight when inserted.
Note a) Do not take more than five minutes to replace the battery, other-
wise the internal memory may be lost.
b) The battery can be replaced with the PT turned on, in which case
there is no limitation for battery replacement time.
PT turned on, otherwise the internal circuitry may be short-circuited or an
electric shock accident may result.
NT20M
Battery connector
Battery Set 3G2A9-BAT08
NT2000M
4. Replace the cover.
leak if the + and – terminals are short-circuited or if the battery is recharged
or dismantled. Handle the battery with care.
Note If no battery is connected, BAT LOW indicator operation is not stable.
3G2A9-BAT08
5 years at 25°C.
Within 5 minutes from the time power is turned off.
Section 8-2
Battery Set
3G2A9-BAT08
Battery connector
69