Cooling - Samlexpower SEC-1245A Owner's Manual

CAUTION!
3 stage charging is recommended for charging stand-alone unloaded batteries (there is no
load connected to the battery when it is being charged). If a load is also connected
simultaneously, a part of the charger's output current will be diverted to this load. Thus,
the charger may remain locked in Stage 2 if the current drawn by the load is more than
the preset value of threshold current determining transition from Stage 2 to Stage 3 .This
will lead to overcharging and loss of electrolyte
For charging a battery when a load is also connected simultaneously, Stage 2 voltage
should be same as Stage 3. Select "Loaded Battery" with the help of Dip Switches (5) –
See under "Selecting the Type of Battery and Charging Stages"

COOLING

The charger is cooled by convection and in addition, has a fan (11) for forced air cooling.
The fan will automatically switch on when the charger enters the Boost / Absorption
Stage 2 (Charging Indicator LED (4) will be Orange) or the Bulk Charging Stage 1
(Charging Indicator LED (4) will be Red). The fan will automatically stop when the
charger enters Float Stage 3 (Charging Indicator LED will be Green). Please note that the
fan will be off in the Float Stage 3 (The Charging Indicator LED will be Green).
The fan will generate audible noise when it is on. If a quiet operation is required, the fan
can be temporarily disabled by pressing the "Mute Mode" push switch. As the fan will be
switched off during the "Mute Mode", the current output during this mode will be
automatically reduced (16 to 18 A for SEC-1245A and 8 to 10 A for SEC-2425A) to limit
the temperature rise. Please see details under "Mute Mode / Reduction of Maximum
Charging Capacity"
In case the fan fails or if the cooling is not adequate due to higher ambient temperature,
inadequate air circulation or blockage of air ventilation openings, the thermal sensor for
over-temperature protection will shut down the output voltage of the charger. The
Charging Indication LED on the front panel will turn red ( On the Remote Panel, the red
LED "I Phase" will light, the green LED "Power" will, however, remain lighted). The
charger will be latched in this shut down condition and will not reset automatically even
after the unit has cooled down. To reset, the AC input power on / off switch (9) at the
again.
back of the unit has to be switched off and on
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