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ISM Installation, Programming & Operation Guide
Page 8
Installing the Battery
The battery back-up feature retains time,
date, and programming information during
power outages. The battery also lets you
program the timer under battery power
before it is connected to an AC power
supply.
For best results, use a long-life, 9-Volt
alkaline battery. A new battery will normally
provide power for up to one year. Replace
the battery yearly to ensure an uninterrupted
power supply.
NOTE:
Make sure the timer is
connected to an AC power supply
when replacing the battery, or you
will lose all programming information
including date and time.
To install the battery:
1. Remove the timer’s lower access cover to
expose the battery compartment.
2. Snap the two-wire battery clip onto the
terminals of the new battery. If you are
replacing an old battery, dispose of the old
battery properly.
3. Insert the new battery snugly into the
battery compartment.
4. Replace the lower access cover.
NOTE:
If no battery is installed, short
circuit detection may not function as
desired. Please ensure the battery is
installed prior to the operation.
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