Samlexpower PST-15S-12E Owner's manual - Section 9 |
42 | SAMLEX AMERICA INC.
SAMLEX AMERICA INC. | 43
seCtIOn 9 |
Operation
!
cAUtion!
Please note that the ON/Off switch is not switching the high power battery
input circuit. Parts of the DC side circuit will still be alive even when the switch is
in the off position. Hence, disconnect the DC and AC sides before working on
any circuits connected to the inverter.
When the inverter is switched oN, the Green LED marked "POWER" (2, fig 6.1a) will be
lighted. This LED indicates that the input section of the inverter is operating normally. Under
normal operating conditions, AC output voltage will now be available at the Schuko Recepta-
cle (6, fig 6.1a) and at the AC output terminals for hardwiring (13, fig 6.1b).
Switch on the AC load(s). The Green LED marked "POWER" (2, fig 6.1a) should remain
lighted for normal operation of the load.
9.3 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 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.
9.4 teMPeRAtURe contRoLLeD cooLinG FAn
One thermostatically controlled cooling fan (18, fig 6.1c) has been provided for forced air
cooling. Temperature of a critical hot spot inside the inverter (Power Transformer T6) 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
switch oN at low loads or if the ambient temperature is cooler. This is normal.
9.5 inDicAtionS FoR noRMAL oPeRAtion
When the inverter is operating normally and supplying AC load(s), the Green LED marked
"POWER" (2, fig 6.1a) will be lighted. Please see Section 10 "Protections" and Section 11
"Troubleshooting Guide" for symptoms of abnormal operation.
9.6 no LoAD DRAW (iDLe cURRent)
When the unit is switched 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. This is called the "Idle Current" or the "No Load Draw". Hence, when the load is
not required to be operated, turn off the inverter to prevent unnecessary current drain
from the battery.