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13 OPERATION OPERATION pro1200to3000w.4/30/2010 8:54 AM Page 17 Note: • Loose connections can result in a severe decrease in voltage which may cause damage and insulation. • Failure to make proper connection between the inverter and the power source will result in reverse polarity. Reverse polarity will blow the internal fuses in the inverter and may cause permanent damage to the inverter. Damage caused by reverse polarity is not covered under the Whistler warranty. • Making the connection between the Positive (+) terminals may cause a spark as a result of current flowing to the capacitors in the inverter. This is a normal occurrence. Due to the potential for sparking, however, it is extremely important that both the inverter and the 12 volt battery be well removed from any possible source of flammable fumes or gases. Failure to heed this warning could result in fire or explosion. 6. Run a ground from the Ground Lug Terminal at the rear of the inverter to a proper grounding point using the shortest practical length of 18 AWG wire. Selection of the grounding point will depend on where you are using the inverter. The ground wire may be connected to the chassis of your vehicle or to the grounding system in your boat or to the earth* if you are operating the inverter in a remote location. Before connecting the ground, make certain that the inverter is turned off. Operating the inverter without properly grounding it may result in electrical shock. * This ground can’t be the same ground as the AC ground. 14 7. Confirm that the equipment or appliance operated is turned off. Plug the equipment or appliance into one of the AC receptacles on the front panel of the the inverter. 8. Turn the inverter to the ON (I) position. Turn on the equipment or appliance. 9. Plug the USB powered device into the inverter’s USB power port. Note: • The audible alarm may make a momentary “chirp” when the inverter is turned OFF (O). The same alarm may also sound when the inverter is being connected to or disconnected from the 12 volt power source. • The use of an extension cord from the inverter to the appliance or equipment being operated will decrease the power being delivered to the load. For best operating results, the extension cord should be no more than 50 feet long. 15 OPERATION OPERATION pro1200to3000w.4/30/2010 8:55 AM Page 19 • Check frequently to ensure that the input and output connections are secure. Loose connections may damage the inverter, the power source, or may generate excessive heat. To generate the maximum output, the Pro-3000W watt model (for example) should be connected to a power supply which has the capacity to produce up to 300 amps. The loads should be distributed between the receptacles to ensure that each outlet is producing no more than its maximum 1500 watt output. If more than one piece of equipment or appliance is to be operated at the same time, first turn on the inverter and then turn on each piece of equipment or appliance separately to enable the inverter to produce the required start up loads. Important Information on Battery Chargers Using your inverter with battery chargers for power tools, flashlights, video cameras and laptop computers may cause damage to the inverter or the charging unit. Check with the appliance manufacturer for compatibility with modified sine wave inverters if you’re unsure. Although we advise against it, if you attempt to use a charging unit, monitor the temperature of the charging unit for approximately 10 minutes. If the charging unit becomes unusually warm, disconnect it from the inverter immediately. 16 The Power Source. When the engine is off, most batteries will provide ample power to the inverter for one to two hours. The actual of time is a function of several variables including condition of the battery, the number of batteries and the power demand being placed on it by the equipment with the inverter. If you are using the inverter while the engine is off, we recommend you start the engine every 30 to 60 minutes and let it run for at least 10 minutes to recharge the battery. We also recommend that the device plugged into the inverter be turned off before turning over the engine. Although it is not necessary to turn off the inverter when turning over the engine, the inverter may momentarily cease operation as the battery voltage decreases. When the inverter is not supplying power, and is turned on, it draws low amperage from the battery (see specifications). For You Television Fans & Audiophiles. Although the inverter is shielded and filtered to minimize signal interference, some interference with your television picture may be unavoidable, especially with weak signals. However, here are some suggestions that may improve the reception. 1. First, make certain that the television antenna produces a clear signal under normal operating conditions (i.e., at home plugged into a standard 110 AC wall outlet). Also, ensure that the antenna cable is properly shielded and of...

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