Notes about UPS software installation on rrc00:

All important scripts are in /etc/apcupsd:

apccontrol -- Main script which handle all incoming events. Avoid modyfying it.

onbattery -- Script executed when system start using battery power 
(power failure). You can add your e-mail if you want to be notified about 
any power failures.

Mainsback -- Similar to onbattery, but it's power back event.

Commfailure -- Communications failure - UPS daemon cannot communicate with 
UPS (other host if it's remote UPS)

Commok -- Communication restored.

All events scripts are executed by /etc/apcupsd/apccontrol. Some lines are
added to /etc/rc.local to start UPS daemon automatically at boot time.
/etc/rc.shutdown is modified, too (to shutdown system when there is not 
enough power in batteries).

This installation was done by Marcin. In case of a problem, you can contact
him or other OPS guys.