User's Manual

Sistema FIREMASTER III "Millennium" Manuale di istruzioni
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1) Avoid exposing the battery to extreme temperatures (below
0°C or OVER 45°C) for long periods.
2) When the SYSTEM is NOT IN USE, provide to charge regularly
the batteries: the lead-acid batteries have a much longer life if
maintained ALWAYS FULLY CHARGED. It is suggested a
charge cycle of 12 hours every 30 days. The internal
microprocessor system will take care to maintain the optimum
charge level in any condition.
3) When the System is NORMALLY USED (periodic duty), it is
suggested to have a 12-hour charge before all shows.
4) If the batteries have been DEEPLY DISCHARGED it is
suggested to have a full charge for at least 24 hours (eventually
repeat TWICE the automatic charge cycle).
5) Make periodic controls of the battery status at least every 2-3
months by visual inspection after removing it from the container:
if any swelling, spot, salt or liquid spill are noticed, DISCARD
IMMEDIATELY THE SUSPECT DEVICE even if apparently it
does still give energy enough.
6) If measured OPEN CIRCUIT (without any load applied) all lead-
acid batteries, when a common voltmeter (tester) is used, always
give 12V even if quite completely discharged . It will be then
necessary to always measure the battery voltage while a suitable
load is applied. To do that, REMOVE the batteries from the Unit
case, measure the voltage across the terminal with a voltmeter
and connect momentarily a load sinking about 1A current. For
a 12V battery a common wire-wound resistor rated 10ohm 10W
can be used or optionally a 12V car bulb (e.g.: the one used for
the headlight). The DIFFERENCE between the voltage measured
OPEN CIRCUIT and UNDER LOAD shouldn't be MORE
THAN 10% - 15%. E.g.: if a battery measured OPEN CIRCUIT
gives a reading of 12,2V and, when LOADED with the resistor
or the lamp, the reading decreases to 11,5V, it can be still
regarded as a GOOD ONE. On the contrary, if the voltage
measured UNDER LOAD should fall below 11V (or less), it will
be then necessary to have a full charg for at least 12 hours and
then the test will be repeated. If, after the charge, the test above is
passed, OK: the battery was just discharged and can be still used.
If otherwise the battery still exhibits an excessive voltage
reduction under load, then it MUST BE IMPERATIVELY
DISCARDED AND REPLACED WITH A NEW ONE.
NOTE: all batteries installed inside the Battery Pack of the
SYSTEM, are AUTOMATICALLY TESTED with the
method above.
7) The MEAN LIFE of a lead-acid battery is ABOUT 2 YEARS. It
is thus suggested, in a prudential way, to REPLACE ANYWAY
YEARLY all batteries giving test results LESS THAN
PERFECT (even if apparently acceptable). EVERY TWO
YEARS ALL SYSTEM BATTERIES MUST BE
REPLACED. The recovered batteries, if still passing the load
test, can be used as EMERGENCY EXTERNAL BATTERIES.