User's Manual

Maintenance
Series 4000 Maintenance and Operations Manual 35
MAINTENANCE
The Series 4000 MTU is designed to be largely maintenance free. Periodic replacement of the
battery, however, will be necessary over the life of the MTU. The Series 4000 MTU is powered
by a 3.6V lithium, D cell battery (Aclara part number 042-0049). The NCC reports regular battery
voltage readings, and also provides a low battery warning to provide ample time for the utility to
replace a battery without loss of data. Use the following procedure to replace the battery in a
Series 4000 MTU.
WARNING:
EXPLOSION HAZARD - BATTERIES MUST ONLY BE CHANGED IN AN AREA KNOWN TO
BE NON-HAZARDOUS
AVERTISSEMENT: RISQUE D'EXPLOSION - AFIN D’ÉVITER OUT RISQU D’EXPLOSION, S’ASURER QUE
L’EMPLACEMENT EST DÉSIGNÉ NON DANGEREUX AVANT DE CHANGER LA BATTERIE.
1) Remove any security hardware from the
MTU door.
2) Open the door of the MTU.
3) Note the polarity orientation of the battery.
4) Press in on the tab to release the battery tie.
5) Remove the battery from the battery holder.
6) Insert the new battery into the battery
holder. The holder is keyed so the battery
can only be installed in one direction.
N
OTE: A backup capacitor will maintain MTU
memory during battery replacement
provided power is not removed for
longer than 10 minutes. Extended
power outages may require
recommissioning the MTU.
7) Secure the new battery into the holder by
threading the tapered end of the tie through
the open end and pulling until snug against
the battery.
8) Use the STAR Programmer to log the
battery replacement.
• Connect the STAR Programmer and select
Read MTU to record the battery
replacement in the activity log. Please see
Read MTU on page 17 for more
information.
• If the MTU was without power for an
extended period of time, use the Replace
MTU option on the STAR Programmer
Main Menu. Please see Replace MTU on
page 20 for more information.
9) Close and secure the MTU door according
to utility standard practices.
DRAFT