Samlex Power SEC-1215UL Manuel Du Propriétaire page 18

SECTION 6 |
6.2 SYMPTOMS: CHARGER POWERED & DISCONNECTED FROM BATTERY
6.2.1 Red LED (2 in Figs 2.1 to 2.3) is OFF
Check there is AC power in the receptacle. If there is power, check the AC side fuse
inside the unit. If the fuse is not blown, check the DC side fuse. If the DC side fuse is not
blown, the output may be shorted. In this condition, the charger is shut down by the
short circuit protection circuit. Check that the output terminals are not shorted. If the
terminals are not shorted, call Technical Support.
6.2.2 Internal AC Side Fuse Blows as Soon as Power is Turned ON
The AC input is selected for 120 VAC but the unit is plugged into 230 VAC. Always check
that the charger is set for the correct AC mains voltage (Refer to Section 5.2.1). If the AC
input voltage is correct, the charger is defective. Call Technical Support.
6.2.3 DC Side Fuse Blows As Soon As The Battery Is Connected
Wrong polarity of battery connection. Ensure Positive of the battery is connected to the
Positive of the charger and the Negative of the battery is connected to the Negative of
the charger.
6.3 SYMPTOMS WHEN THE CHARGER IS POWERED AND IS BEING USED
AS A DC POWER SUPPLY/UPS
6.3.1 The Voltage Drops When Load is Switched ON
The load is trying to draw current more than the current limit value of the charger
(the current limit value is the maximum specified charging Amps - see Specifications
at Section 7). Once the load current reaches the current limit value, the current limit
circuit is activated and the output voltage drops. Some loads like motors, compressors,
incandescent lamps, halogen lamps, heating elements, relays, coils, capacitors etc.
draw very large inrush/starting currents which may reach up to 10 times their normal
operating currents. Ensure that the starting / inrush current or the maximum operating
current of the load is lower than the current limit value of the charger.
i
INFO
Both the AC side and DC sides have fuses that are located inside the charger.
Disconnect the AC power when checking or changing the fuses. Open the
charger as follows:
1. Remove the 4 screws on the ammeter side of the top cover
2. Gently slide the top cover out by about 2 to 3 inches.
(CAUTION! The top cover will be restrained from fully sliding out by the
wires connecting the ammeter , LED and fan)
3. The fuses will now be accessible. See Specifications in Section 7 for fuse
ratings.
18 | SAMLEX AMERICA INC.
Troubleshooting