Replacing the Backup Battery
Replacing the Backup Battery
The Micro OCS controller contains a run-time battery monitor that checks the voltage of the internal lithium battery.
This battery is used to run the real-time clock and maintains retentive registers when power is disconnected.
The battery will generally last seven (7) to ten (10) years. Environmental conditions, including extreme tem-
peratures and humidity, can affect battery life. If the battery older than seven (7) to ten (10) years old, it is recom-
mended that it be replaced as preventative maintenance.
WARNING: DO NOT USE IF BATTERY IS LEAKING OR HAS BEEN DAMAGED.
WARNING: LITHIUM BATTERIES MAY EXPLODE OR CATCH FIRE IF MISTREATED.
DO NOT RECHARGE, DISASSEMBLE, HEAT ABOVE 100° C (212° F) INCINERATE, OR PUNCTURE.
WARNING: EXPLOSION HAZARD – BATTERIES MUST BE ONLY BE CHANGED IN A AREA KNOWN TO
BE NON-HAZARDOUS.
WARNING: Disposal of lithium batteries must be done in accordance with federal, state, and local reg-
ulations. Be sure to consult with the appropriate regulatory agencies before disposing batteries. In addi-
tion, do not recharge, disassemble, heat or incinerate lithium batteries.
WARNING: Do not make substitutions for the battery. Be sure to only use the authorized part number to
replace the battery.
The Micro OCS controller uses a 3V lithium coin battery which can be ordered from Horner APG, part number HE-
BAT009.
Steps to Replace the Battery
1. Make sure the user program and any data stored in retentive memory is backed up.
2. Disconnect all power from the Micro OCS unit including I/O power.
3. Remove all connectors, and then use a flat head screwdriver to press and release the four (4) clips. Remove
the back cover.
4. Remove the old battery. It may require a small flat blade screwdriver to lift it from the holder.
5. Dispose of the battery properly; refer to the above warning on disposal regulations.
6. Slide the new battery into the holder. Make sure the battery is inserted with the proper polarity. The top tab of
the battery holder should contact the positive (+) terminal of the battery.
7. Place the back cover over the unit and gently press each corner evenly in order to snap the clips back into
place.
8. Apply power to the unit. Check that the battery error is no longer reported. If the unit still reports the error,
remove the battery immediately and contact "Troubleshooting" on page159.
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