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SKU 92708 

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For technical questions, please call 1-800-444-3353.

TroubleSHooTINg TIPS

If the low battery alarm sounds, this means that the input voltage is below the 

1. 

necessary 11 V.  The battery needs recharging.  You should stop using the 

appliance and then recharge the battery.  If this is not done, the Inverter will 

shut off automatically at around 10 V.
If you are unsure if the inverter will have the proper amount of current to run 

2. 

the device, use this rough guideline:  Take the power consumption of the load 

in watts and divide it by 12 (input voltage).  The result will be the approximate 

number of amps needed to power your device. 

Example:  Load is rated at 312 watts.  312 watts / 12 V = 26 amps needed.  

You could use this device with the inverter.
If your television will not start, it is important to keep in mind that some appli-

3. 

ances (including many televisions) may require two to six times their wattage 

to start up.
If your audio system buzzes while using this inverter, it is because some 

4. 

sound systems can not filter out the modified sine wave produced by the 

inverter.  Use a sound system that incorporates a higher quality power supply.
This inverter is made to minimize the interference with TV signals.  However, 

5. 

especially with weak TV signals, some interference may still be visible.  To 

correct this, place the inverter as far away as possible from the television 

antenna and it’s cables.  Next, adjust the orientation of the inverter to the 

antenna cables and TV power cord to minimize the interference.  Also use a 

shielded antenna cable.
If the low battery alarm is on all the time, try these corrective measures:  Re-

6. 

charge battery if in poor condition.  Next, check the battery connection.  You 

may need to clean the connectors.
If you are getting a low output voltage, try reducing the load to minimize 

7. 

watts.  You may have overloaded the inverter.  Reduce your load to 390 

watts.  Also, keep input voltage above 11 volts to maintain a constant flow of 

power.
If you are not getting any power output, turn the power switch Off and On 

8. 

again, until the green power light comes on.  Your devices may draw too 

much power to operate them.   The inverter may be in thermal shutdown.  Let 

it cool down and make sure there is adequate ventilation around the unit.

Summary of Contents for 92708

Page 1: ... serious injury Save this manual Copyright 2005 by Harbor Freight Tools All rights reserved No portion of this manual or any artwork contained herein may be reproduced in any shape or form without the express written consent of Harbor Freight Tools Diagrams within this manual may not be drawn proportionally Due to continuing improvements actual product may differ slightly from the product describe...

Page 2: ...manual Write the invoice number on the inside of the front cover Keep the manual and invoice in a safe and dry place for future refer ence Safety Warnings and Precautions WARNING When using this device basic safety precautions should always be followed to reduce the risk of personal injury and damage to equipment Read all instructions before using this product Do not 1 plug a battery charger into ...

Page 3: ...w instructions for changing accessories Inspect inverter cords periodically and if damaged have them repaired by an authorized technician Disconnect power 12 Unplug inverter when not in use Avoid unintentional starting 13 Be sure the switch is in the Off position when not in use and before plugging in any appliance Stay alert 14 Watch what you are doing use common sense Do not operate any inverter...

Page 4: ... ventilation space underneath the Inverter as well thick carpets or rugs can obstruct air flow causing the Inverter to overheat Read and adhere to all warnings and safety precautions in the owner s 21 manual for the device that this inverter is used to power A vehicle s engine must never be used in any sealed structure 22 Carbon monoxide is produced during operation and is deadly in a closed en vi...

Page 5: ...damage the inverter or the device being powered If more than one 12 volt battery is to be used the batteries must be connected in a parallel circuit batteries connected in a series circuit will produce too much voltage Place the Power Inverter on a flat surface Make sure it has adequate venti 1 lation and is not in direct sunlight Fasten the inverter securely to the surface using screws or some ot...

Page 6: ...d every hour to recharge the battery Doing this will help prevent any unexpected shutdown of the equipment This will also help ensure that there will be enough battery power to start the vehicle Due to the risk of carbon monoxide inhalation see Warning 23 on page 4 do not run the vehicle s engine within an en closed area After use disconnect the appliances flip the Power Switch to the Off O 4 posi...

Page 7: ...er out the modified sine wave produced by the inverter Use a sound system that incorporates a higher quality power supply This inverter is made to minimize the interference with TV signals However 5 especially with weak TV signals some interference may still be visible To correct this place the inverter as far away as possible from the television antenna and it s cables Next adjust the orientation...

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