Irritrol Total Control-R Series - Manual (Page 6)

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This section contains general information on:
• How the backup system works
• How the electronic circuit breaker works
• How the sensor feature works
HOW THE BACKUP SYSTEM WORKS
The Total Control uses non-volatile memory to store watering
programs. This type of memory prevents the watering program
information from becoming lost in the event of a power failure. An
additional benefit of non-volatile memory is that a factory-installed
backup program is not necessary, thereby avoiding the potential for
unplanned operation.
Because the current time and date are always changing, only the most
recent date can be saved in non-volatile memory. Therefore, a battery
is required to maintain the correct time and date in the event of a
power failure. A 9-volt alkaline battery (not provided) will maintain
the correct time and date during power failures up to 90 days. In a
typical installation, the battery should last from two to four years
before replacement is necessary. Once the battery or AC power is
connected, the controller can be fully programmed for operation.
Note: For operation of the valves, AC power must be applied.
To install the battery:
1. Unlatch the hinged control module
assembly and carefully swing it
outward to open.
2. Locate and remove the battery
compartment cover from the lower
back side of the module. See Figure 3.
3. Connect a 9-volt alkaline battery to
the battery clip terminals.
4. Insert the battery into the
compartment and reinstall the battery compartment cover.
Caution: Batteries contain hazardous material. Always handle and
discard batteries properly in accordance with the battery
manufacturer’s recommendations.
GENERAL INFORMATION
General Information
Figure 3
9-Volt Alkaline
Battery