GBC 34.0133.00 User Manual page 7

3. As the battery is used up, battery voltage begins to fall. When the inverter senses that the voltage at its DC input has
dropped to 10.0~10.5V (12VB inverter) or 19.5~20.0V (24V inverter), an audible alarm sounds. This allows time for
computers or other sensitive devices to be shut down.
4. If the audible alarm is ignored the inverter will automatically shut down when the battery voltage drops to 9.0~9.5V
(12V inverter) or 18.0~19.0V (24V inverter) . This prevents battery damage from excessive discharge. After auto shut
down, the red FAULT light illuminates.
IMPORTANT: Vehicle batteries are designed to provide brief periods of very high current needed for engine starting.
They are not intended for constant deep discharge. Regularly operating the inverter from a vehicle battery until the
low voltage alarm sounds will shorten the life of the battery .Consider connecting the inverter to a separate deep
discharge type battery if you will be frequently running electrical products for extended period of time.
5. If an AC product rated higher than the rated continuous power (or which draws excessive surge power) is
connected, the inverter will shut down. The red FAULT light will turn on.
6. If the inverter exceeds a safe operating temperature, due to insufficient ventilation or a high temperature
environment, it will automatically shut down. The red led light will turn on and the audio warning will sound.
7. Should a defective battery charging system causes the battery voltage to rise to dangerously high levels, the
inverter automatically shuts down.
CAUTION! Although the inverter incorporates protection against over-voltage, it may still be damaged if the
input voltage exceeds 16.2 VDC (12V inverter) or 31V DC (24V inverter).
8. The cooling fan is designed to operate only when the temperature is higher than 40°C.
9. In the event of an overload, low battery voltage or overheating, the inverter will automatically shut down(See
Section 4 Troubleshooting).
10. The inverter will need to be manually reset when shut down by overload.
Battery Operating Time
Operating time will vary depending on the charge level of the battery, its capacity and the power level drawn by the
particular AC load. When using a vehicle as a power source, it is strongly recommended to start the vehicle every hour or
two to charge the battery before its capacity drops too low. The inverter can operate while the engine is running, but the
normal voltage drop that occurs during starting may trigger the inverter's low voltage shutdown feature.
Because the inverter draws less than the no load current draw with the ON/OFF ("—"/"O")
switch in ON ("—") position and with no AC products connected, it has minimal impact on battery operating times.
Interference with Electronic Equipment
Generally, most AC products operate with the inverter just as they would with household AC power. Below is information
concerning two possible exceptions.
Buzzing Sound in Audio Systems and Radios
-some inexpensive stereo systems, boom boxes, and AM-FM radios have inadequate internal power supply filtering and
buzz slightly when powered by the inverter. Generally, the only solution is audio product with a higher quality filter.
Television Interference
-The inverter is shielded to minimize its interference with TV signals. However, with weak TV signals interference may be
visible in the form of lines scrolling across the screen. The following should minimize or eliminate the problem:
 Use an extension cord to increase the distance between the inverter and the TV, antenna and cables.
7