Samplex America PSE-1260A Owner's Manual - page 8
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8
OPERATION
To operate the power inverter, turn it on using the ON/OFF switch on the front panel. The power
inverter is now ready to deliver AC power to your loads. If you are operating several loads from the
power inverter, turn them on separately after the inverter has been turned on. This will ensure
that the power inverter does not have to deliver the starting currents for all the loads at once.
1. Controls and indicators
The ON/OFF switch turns the control circuit in the power inverter on and off. It does not
disconnect power from the power inverter.
When the switch is in the OFF position, the power inverter draws no current from the
battery. When the switch is in the ON position but with no load the power inverter draws less
than 400mA (12V version) or 230mA (24V version) from the battery.
2. Fan control and over temp. alarm and protection
This unit is cooled by a temp. controlled fan and is provided with over temp. alarm and
protection circuitry.
Temperature sensing is done from the surface of the Power Transformer T2 located inside the
unit. When it's temp reaches more than 40
o
C, the cooling fan is switched on. (Note that
the fan will not cut in on no load or on light loads as the temp of T2
will be below 40
o
C). In case the cooling fan fails or there is overload or the ambient
temp. is very high, the cooling will not be adequate and the temp. of T2 will start rising. At
around 57
o
C, an audible alarm will be sounded and at the same time, the power output of the
inverter will be shut down. Once T2 cools down to around 47
o
C, the unit will be reset
automatically.
3. Over-load indicator
The overload indicator indicates that the power inverter has shut itself down because its
output circuit has been short circuited or drastically overloaded. Switch the ON/OFF switch
to OFF, correct the fault condition, and then switch the ON/OFF switch back to ON.
Operating limits: Input voltage protection and alarm
The power inverter will operate from input voltage ranging from 10V-15V (12V version) or 20V-
30V (24V version). If the voltage drops below 10.7V (12V version) or 21.5V (24V version) an
audible low battery warning will sound. The power inverter will shut down if the input voltage
drops below 10V (12V version) or 20V (24V version). This protects your battery from being over-
discharged.
The power inverter will shut down and also produce an audible alarm if the input voltage exceeds
15V (12V version) or 30V (24V version). This protects the inverter from excessive input voltage.
Although the power inverter incorporates protection against over-voltage, it may still be damaged
if the input voltage is allowed to exceed 15V (12V version) or 30V (24V version).
TROUBLESHOOTING
1. Common problems
Television interference: Operation of the power inverter can interfere with television
reception on some channels. If this situation occurs, the following steps may help to alleviate
the problem.
n
Make sure that the chassis ground lug on the back of the power inverter
is solidly connected to the ground system of your vehicle, boat or home.
n
Do not operate high power loads with the power inverter while watching
television.
n
Make sure that the antenna feeding your television provides an
adequate (Snow- Free) signal and that you are using good quality
cable between the antenna and the television.
n
Move the television as far away from the power inverter as possible.
n
Keep the cables between the battery and the power inverter as short
as possible and twist them together with about 2 to 3 twists per foot.
This minimizes radiated interference from the cables.