User's Manual

FIREMASTER IV " MillenniumThree " radio shooting system User’s manual
5.3.4 CHARGE
The BPK-48A Battery Pack must be first connected to the mains with the line
cord: the blue LINE LED will turn immediately ON and the TEST
OK/FAULT yellow LED will start to blink. The BATTERY#1 (SYSTEM)
LED will turn ON (green): during 10 seconds the battery is tested (the
corresponding green LED is steady). If the battery is present and its voltage is
above the minimum required voltage, the charge will start (the corresponding
LED will start to BLINK). If otherwise the battery is NOT PRESENT or its
open-circuit voltage is BELOW the minimum allowed limit, the LED will turn
RED and this battery will be DISCONNECTED (the battery is not present or
is failed and requires service).
The process described above is repeated for the BATTERY#2 and
BATTERY#3 (FIRE batteries). When all batteries have been tested, all the
battery LED should BLINK GREEN, the TEST OK/FAULT yellow LED is
turned OFF and the red CHARGE led is turned ON. From this moment
begins the charge cycle of 12 hours.
The charge cycle (independently for each battery) can terminate in two possible
ways:
- The charging current remains BELOW the preset limit (preset end-of-
charge minimum current) for at least 1 minute.
- The charge is terminated ANYWAY after 12 hours (even if the end-of-
charge minimum current is not reached)
While the first case is the correct way to terminate the charge cycle, the second
case should be regarded as quite irregular. In any case if a battery doesn’t reach
the end-of-charge minimum current within the allotted period of 12 hours, not
necessarily this battery should be regarded as FAILED one. It is quite
common for this type of batteries, after a long use and several charging cycles,
TO HAVE THE CHARGE CAPACITY REDUCED: this battery can be still
used but it will be User’s care to replace this battery as soon as possible with a
NEW ONE. Remember as a sealed Lead-Acid battery has a reliable mean life
of TWO YEARS and it should be replaced ANYWAY after this period (even
if apparently still efficient).
Since the BPK 48-A Unit IS NOT PROVIDED with a LINE SWITCH,
the Unit itself, during the charging process, must be suitably placed in
order to allow the easy removal of the LINE CORD at any moment, in
case of emergency.
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