Section V – Maintenance
MN06135 Issue/Rev. 1.3 (6/17) 83
Maintenance
Recommended backup battery replacement interval - 5 years
T
he following procedure applies to ALIII units with KDC.net boards.
T
he life of the battery used for the backup RAM can vary due to operational conditions, particularly the amount of
time that the unit is left in a powered off state. It is suggested the backup battery be replaced approximately every
five years or during a regularly scheduled maintenance period. For applications that are under strict metrological
control it may be convenient to replace the battery whenever a W&M official will be on site since the cover seal
will need to be broken and must then be reapplied.
F
ield replacement of the battery is only possible with AccuLoad III.net models (firmware versions 11.00 and up); it
is NOT possible to field upgrade pre- .net AccuLoad III units (firmware revisions less than 11.00) as the battery is
soldered directly to the KDC board. To facilitate replacement of this battery, the KDC board must be removed
from the unit to gain access to the rear side of the board to unsolder and replace the battery. Only qualified tech-
nical personnel that are familiar with printed circuit board de-soldering / soldering procedures should attempt this
procedure. The KDC board should be returned to TechnipFMC for battery replacement or consider complete re-
placement of the board assembly with an upgrade to the new KDC.net board.
C
aution: Any soldering work will need to be performed in a safe (non-hazardous) area to prevent ignition of haz-
ardous atmospheres. In addition, ESD controls should be employed to avoid damaging sensitive electronic com-
ponents.
N
ote: The KDC.net board utilizes a special capacitor that was designed to maintain power to the battery backed
up memory during the time of battery replacement when the mains power is disconnected. However, as a precau-
tionary measure, prior to replacing the battery, it recommended to download all parameter data, custom config-
ured print reports, Boolean equations, and or language translations from the AccuLoad via the AccuMate. These
files should be saved to be used for the restoration of the AccuLoad in the unlikely event that the battery backed
up memory becomes corrupt during the battery exchange.
In t
he case of a complete board replacement, for example exchanging a KDC board for a KDC.net board, the
above procedure must be performed to create the files needed to restore the AccuLoad configuration.
I
n any case, transaction records should be downloaded for archival purposes if required by local agencies as
these cannot be reloaded back into the AccuLoad. The AccuMate companion tool provides a facility for transfer-
ring the transaction log records; the transaction log will be converted to a .CSV file and imported into an Excel
workbook when utilizing the AccuMate.
Battery replacement procedure:
1. R
etrieve all configuration information and data logs as detailed above using the AccuMate program, s
ee
MN
06136 for specific instructions on the use of AccuMate.
2. Power down the AccuLoad III.
3. B
reak the W&M seal wire on the two corner cover bolts.
4. Remove the AccuLoad III front cover bolts and open the front cover.
5. R
emove the seven barrier screws and barrier plate (Figure 1) from the KDC.net board located on the
cover.
6. R
eplace battery with ENERGIZER P/N CR2032 (substitutes not allowed), TechnipFMC P/N 64458141
8
(
refer to Figure 1 of AB06071 for location of the battery on the KDC.net board).
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