52 | SAMLEX AMERICA INC.
SAMLEX AMERICA INC. | 53
SECTION 9 |
Operation
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 mul-
tiple 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
The cooling fan is thermostatically controlled. The fan sucks air from the ventilation open-
ings at the bottom of the unit (6A, Fig 6.1) and discharges through opening at the back of
the unit (6B, 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 55°C ± 3°C, the fan is switched ON. The fan will be automatically switched
OFF once the hot spot cools down to 45°C ± 3°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 GREEN "POWER ON"
LED (2, Fig 6.1) and the Status LED on the GFCI (5C in Fig 6.1) will be lighted Green. Please
see under "Protections" (Section 10) and "Troubleshooting Guide" (Section 11) for symp-
toms of abnormal operation.
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 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 (<600mA for PST-600-12 and <450mA for PST-600-24). This is
called the "idle current" or the "no load draw". Hence, when the load is not required to
be operated, turn OFF the ON/OFF switch on the inverter to prevent unnecessary current
drain from the battery.
i
INFO
When the inverter is turned OFF using the optional Remote Control RC-15A,
some control circuitry in the inverter is still alive and will draw very low current.
Therefore, to prevent any drain from the battery, switch OFF the inverter from
the ON/OFF switch provided on the front panel of the inverter.
i
INFO
Si l'onduleur est fermé avec la Télécommande RC-15, quelques circuits rester-
ont actifs et continueront à tirer un faible courant. Afin de prévenir une perte
de tension de la batterie, fermez l'onduleur en utilisant l'interrupteur ON/OFF
situé sur le devant de l'onduleur.