Connection And Operation; Cooling And Fan Control - Samlexpower SEC-1212 Installation & Operating Manual

CONNECTION AND OPERATION

WARNING ! Before plugging the unit to the AC outlet, please check that
your local supply voltage is 120 VAC. If your local supply voltage is 240
VAC, change the internal voltage selection to 240 VAC ( SEE " INPUT
VOLTAGE CONVERSION FROM 120 VAC TO 240 VAC" IN THE PREVI-
OUS SECTION )
Ensure that the power supply's ON/OFF switch is off and it is unplugged
from the AC outlet.. Switch off your 12 V DC device and connect it's positive
and negative to the RED ( Positive ) and WHITE ( Negative ) terminals re-
spectively. Ensure that the connections are secure and tight. Plug the power
supply into the AC outlet. Press the ON/Off switch of the power supply to ON
and observe that the neon indicator in the switch illuminates. If the indicator
fails to light , recheck the connection, AC outlet and the fuse inside the
power supply.
Your 12 V DC device may now be switched on.
COOLING AND FAN CONTROL / THERMAL SHUT DOWN (SEC-1223)
SEC-1212 is cooled by convection.
PLACE THE UNIT IN A WELL VENTILATED OPEN AND COOL AREA.
DO NOT BLOCK THE VENTILATION OPENINGS ON THE SIDES
SEC-1223 is cooled by convection and forced air. A temperature controlled
fan has been provided to improve cooling at higher loads. The fan is con-
trolled by a sensor mounted on the power transformer. THE FAN WILL BE
OFF AT LOWER LOADS. It will come on only when the temperature of the
power transformer is above 70ºC due to higher loads. In case the fan fails or
the air flow is blocked, a second temperature sensor mounted on the power
transformer will activate over temperature shut down at 100ºC. The output
voltage will be automatically resumed once the unit cools down.
PLACE THE UNIT IN A WELL VENTILATED OPEN AND COOL AREA.
DO NOT BLOCK THE OPENINGS AT THE FAN SUCTION ON THE BOT-
TOM AND THE DISCHARGE OPENINGS ON THE SIDES .
3.