Omron CP1L CPU UNIT - 06-2007 Operation Manual page 529

Replacing User-serviceable Parts
1,2,3...
!WARNING
!Caution You must complete this procedure within five minutes after turning OFF the
!Caution UL standards require that batteries be replaced by experienced technicians.
496
Procedure
1. Turn OFF the power to the CPU Unit.
or If the CPU Unit has not been ON, turn it ON for at least five minutes and
then turn it OFF.
Note If power is not turned ON for at least five minutes before replacing the
battery, the capacitor that backs up memory when the battery is re-
moved will not be fully charged and memory may be lost before the
new battery is inserted.
2. Open the compartment on the CPU Unit and carefully draw out the battery.
3. Remove the battery connector.
4. Connect the new battery, place it into the compartment, and close the cov-
er.
CPU Units with 14 or 20 I/O Points
CPU Units with 30 or 40 I/O Points
Never short-circuit the battery terminals; never charge the battery; never dis-
assemble the battery; and never heat or incinerate the battery. Doing any of
these may cause the battery to leak, burn, or rupturing resulting in injury, fire,
and possible loss of life or property. Also, never use a battery that has been
dropped on the floor or otherwise subject to shock. It may leak.
power to the CPU Unit to ensure memory backup. If the procedure is not com-
pleted within 5 minutes, data may be lost.
Always place an experienced technician in charge or battery replacement.
Section 10-2