Samlex Power PST-150-12 Manuel Du Propriétaire page 37

SECTION 9 | Operation
Switch on the AC load(s). The Status LED (2, Fig 6.1) should remain GREEN for normal
operation of the load.
9.2 POWERING ON THE LOADS
After the inverter is switched ON, it takes a finite time to become ready to deliver full
power. Hence, always switch on the load(s) after a few seconds of switching on the
inverter. Avoid switching on the inverter with the load already switched ON. This may
prematurely trigger the overload protection.
When a load is switched ON, it may require initial higher power surge to start. Hence, if
multiple loads are being powered, they should be switched ON one by one so that the
inverter is not overloaded by the higher starting surge if all the loads are switched ON at
once.
9.3 TEMPERATURE CONTROLLED COOLING FAN
Forced air cooling is provided by one thermostatically controlled cooling fan that is
located behind fan air discharge opening (4, Fig, 6.1). Temperature of a critical hot spot
inside the inverter is monitored to activate the fan and the over temperature shut-
down. When the temperature of this hot spot reaches 48°C, the fan is switched ON. The
fan will be automatically switched OFF once the hot spot cools down to 42°C. Please
note that the fan may not come ON at low loads or if the ambient temperature is cooler.
This is normal.
9.4 INDICATIONS FOR NORMAL OPERATION
When the inverter is operating normally and supplying AC load(s), the Status LED (2, Fig
6.1) will be GREEN. In case of abnormal operation, the Status LED (2, Fig 6.1) will turn
ORANGE and buzzer will sound. Please see under Section 10,"Protections" for more
details.
9.5 NO LOAD DRAW (IDLE CURRENT)
When the ON/OFF switch is turned ON, all the circuitry inside the inverter becomes
alive and the AC output is made available. In this condition, even when no AC load is
being supplied (or, if a load is connected but has been switched OFF), the inverter draws
a small amount of current from the batteries to keep the circuitry alive and ready to
deliver the required power on demand. This is called the Idle Current or the No Load
Draw. Hence, when the load is not required to be operated, switch OFF the inverter by
switching OFF the ON/OFF Switch (3, Fig 6.1) to prevent unnecessary current drain from
the battery.
SAMLEX AMERICA INC. | 37