FS Box
User’s Manual
Version 1.5 | 17/06/19
Page 4
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Power
Mains power
The FS Box can work on mains power (230 volts) or on the built-in battery. If it is connected to mains power
and the mains power switch is turned on, then the '230V' signal lamp will light up. The FS Box will then
operate on mains power, and the battery will also be charged.
The signal lamp 'Charging' is then lit up, or if the battery is completely charged, then the signal lamp 'Full'
will light up.
If the signal lamp 'Empty' lights up, then the battery is almost empty, and the FS Box should be connected
to the mains power as soon as possible in order to recharge the battery.
Attention: the FS- BOX should be connected only to a grounded wall socket.
Battery
The battery used in the FS Box is a so-called closed, gas-tight lead battery. This type of battery is often
used for applications such as alarm installations and may be charged or discharged in any position. The
lifetime of this type of battery is 3 to 5 years, and it can be completely discharged about 200 to 250 times. If
it is only partially discharged, then the number of times increases proportionately.
Attention: never store an FS Box with an empty battery.
If the battery is empty, the plates may become sulphated, strongly reducing the capacity of the battery. In
actual use, you should make sure - if the FS Box battery has been completely discharged - that it is
connected to the mains power as soon as possible. If the battery has deteriorated, then the so-called
residual charging current will also increase. As a result, the signal lamp 'charging' will continue to light up
even after a long interval of charging.
Battery charging circuit
The charging circuit in the FS Box is dimensioned in such a way that one may allow it to be connected to
the mains power continually. In order to prevent damage, you should make sure that the battery is charged
at least once every month by connecting the FS Box to the mains power for about one day. If the battery is
empty after being used, then the FS Box should be connected to the mains power as quickly as possible.
Fuses
The mains power circuit in the FS Box is protected by a special slow 0.4 ampere fuse, which can withstand
the large switch-on currents that can sometimes occur when switching on the box. For protecting the power
supply of the light circuit and the slaves, a slow 3.15 ampere fuse is used.
Attention: the fuses may be replaced only by types with the proper value and characteristic!
