GPSW-600/1500
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13
When determining whether a microwave oven can be operated by the 1500 W
inverter, remember that the power commonly advertised for microwave ovens is
the cooking power (the power delivered to the food) not the power actually
consumed by the microwave oven. The microwave oven will consume 40% to
100% more than its advertised cooking power. Check the rating sticker on the
back of the oven to determine its actual power draw. The 1500 W inverter will
operate a small microwave oven (0.2 to 3.0 cubic foot capacity) that draws up to
1800 watts. It will provide 10 to 15 minutes of cooking time, depending on battery
capacity. Some induction motors used in refrigerators, freezers, pumps, and
other motor-operated equipment require very high surge currents to start. The
power inverter may not be able to start some of these motors even though their
rated current draw is within the power inverter.
If the motor refuses to start, observe the battery voltage indicator while trying to
start the motor. If the battery voltage indicator drops below 11 volts while the
inverter is attempting to start the motor, this may be why the motor won’t start.
Make sure that the battery connections are good and the battery is charged, but
if the voltage still drops below 11 volts, you may need to use a larger battery.
6.2 Input voltage:
The power inverter will operate from input voltage ranging 10-15V (GPSW-600W-
12V ver.) and 10 V – 16 V (GPSW-1500-12V ver.) or 20 V-32 V (24 V ver.) If the
voltage drops below 10.5 V (12 V ver.) or 21 V (24 V ver.), an audible low battery
warning will sound and the voltage indicator will be in the lower red zone. The
power inverter will shut down if the input voltage drops below 10 V (12 V ver.) or
20 V (24 V ver.). This protects your battery from being overly discharged.
The power inverter will also shut down if the input voltage exceeds 16 V (12 V
ver.) or 32 V (24 V ver.). This protects the inverter against excessive input
voltage. The voltage indicator will be in the upper red zone. Although the power
inverter incorporates protection against over voltage, it may still be damaged if
the input voltage is allowed to exceed 20 V (12 V ver.) or 40 V (24 V ver.).
7. Troubleshooting
7.1 Common problems
Television interference: Operation of the power inverter can interfere with
television reception on some channels. If this situation occurs, the following steps
may help to alleviate the problem.
• Make sure that the chassis ground lug on the back of the power inverter is
solidly connected to the ground system of your vehicle, boat or home.
• Do not operate high power loads with the power inverter while watching
television.
