POWER INVERTER
400 WATT / 800 WATT PEAK
92708
ASSEMBLY AND OPERATING INSTRUCTIONS
3491 Mission Oaks Blvd., Camarillo, CA 93011
TO PREVENT SERIOUS INJURY,
READ AND UNDERSTAND ALL WARNINGS
AND INSTRUCTIONS BEFORE USE.
©
®
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.
For technical questions and replacement parts, please call 1-800-444-3353
use electrically powered products in the presence of flammable gases or liq-
uids.
5. Keep children away. Children must never be allowed in the work area. Do
not let them handle machines, equipment, or extension cords.
6. Store idle equipment. When not in use, this product must be stored in a dry
location to inhibit rust.
7. Use the right inverter for the job. Do not attempt to force a small inverter or
attachment to do the work of a larger industrial inverter. There are certain
applications for which this inverter was designed. It will do the job better and
more safely at the rate for which it was intended. Do not modify this inverter
and do not use this inverter for a purpose for which it was not intended.
8. Dress properly. Do not wear loose clothing or jewelry as they can be caught
in moving parts. Protective, electrically nonconductive clothes and nonskid
footwear are recommended when working. Wear restrictive hair covering to
contain long hair.
9. Use eye protection. Always wear ANSI approved impact safety goggles when
using inverters.
10. Do not overreach. Keep proper footing and balance at all times. Do not reach
over or across running machines.
11. Maintain inverters with care. Keep inverters clean for better and safer per-
formance. Follow instructions for changing accessories. Inspect inverter cords
periodically and, if damaged, have them repaired by an authorized technician.
12. Disconnect power. Unplug inverter when not in use.
13. Avoid unintentional starting. Be sure the switch is in the Off position when
not in use and before plugging in any appliance.
14. Stay alert. Watch what you are doing, use common sense. Do not operate
any inverter when you are tired.
15. Check for damaged parts. Before using any inverter, any part that appears
damaged should be carefully checked to determine that it will operate properly
and perform its intended function. Check for alignment and binding of moving
parts; any broken parts or mounting fixtures; and any other condition that may
affect proper operation. Any part that is damaged should be properly repaired
or replaced by a qualified technician. Do not use the inverter if any switch does
not turn On and Off properly.
16. Servicing. This device should be serviced only by a qualified technician. Aside
from the fuse, this item does not have any user-replaceable parts.
SKU 92708 For technical questions, please call 1-800-444-3353.
Page 3
17. Do not operate inverter if under the influence of alcohol or drugs. Read
warning labels on prescriptions to determine if your judgment or reflexes are
impaired while taking drugs. If there is any doubt, do not operate the inverter.
18.
Guard against electric shock.
Do not open the metal case; risk of electric shock.
Prevent body contact with grounded surfaces such as pipes, ra-
diators, ranges, and refrigerator enclosures during installation.
Connect all wires securely and cover the connections with insulat-
ing rubber boots (not included).
Store inverters and metal objects away from the inverter.
19. People with pacemakers should consult their physician(s) before using
this product. Electromagnetic fields in close proximity to a heart pacemaker
could cause interference to or failure of the pacemaker.
20. Keep the Inverter well-ventilated. Do not place any objects on top of or next
to the Inverter or allow anything to cover the cooling fans; doing so can cause
the Inverter to overheat, causing a potential fire hazard and/or damage to the
Inverter. Leave adequate ventilation space underneath the Inverter as well;
thick carpets or rugs can obstruct air flow, causing the Inverter to overheat.
21. Read and adhere to all warnings and safety precautions in the owner’s
manual for the device that this inverter is used to power.
22. A vehicle’s engine must never be used in any sealed structure. Carbon
monoxide is produced during operation and is DEADLY in a closed envi-
ronment. Early signs of carbon monoxide poisoning resemble the flu, with
headaches, dizziness, or nausea. If you have any of these signs, get fresh air
immediately.
Note: Performance of this unit may vary depending on the available battery power
or appliance wattage.
Warning:The warnings, cautions, and instructions discussed in this instruc-
tion manual cannot cover all possible conditions and situations that may occur.
It must be understood by the operator that common sense and caution are
factors which cannot be built into this product, but must be supplied by the
operator.
Unpacking
When unpacking, check to make sure that the Inverter is in good condition.
If any parts are missing or broken, please call Harbor Freight Tools at the number
on the cover of this manual as soon as possible.
SKU 92708 For technical questions, please call 1-800-444-3353.
Page 4
BACK
WARNING!
Risk of Fire!
The positive battery
terminal connection
must be the LAST
connection and must
be done with the
inverter’s switch off.
Negative
Positive
Connection
For the power inverter to work properly, your power source must provide 12 volts
DC, and the power source must provide enough current (i.e., 32 amps to operate
the load of 384 Watts or under).
Caution: This inverter must only be connected to batteries with a nominal
output voltage of 12 volts. Lower voltage will not operate the inverter prop-
erly, and more voltage could damage the inverter or the device being pow-
ered. 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 pro-
duce too much voltage.
1. Place the Power Inverter on a flat surface. Make sure it has adequate ventilation
and is not in direct sunlight. Fasten the inverter securely to the surface, using
screws or some other means. If holes are to be drilled, follow safe, proper
installation techniques.
2. Connect the Battery Cable lugs to the (Positive) red and (Negative) black
terminals on the back of the Inverter. Securely tighten.
3. The Power Inverter can be used either while the engine is running or off.
Connect the Battery Cables to the Negative (black) and Positive (red) terminals
of the battery.
REV 06/06
SKU 92708 For technical questions, please call 1-800-444-3353.
Page 5
FRONT
Power
Indicator
Outlets
Switch
Operation
1. Plug the 115VAC device(s) you wish to power into the 3-prong AC Receptacles.
See FRONT above.The appliance(s) must not use more than 400 (total) watts
during continuous operation, otherwise it may overload the Inverter.
Caution: Some rechargeable appliances may damage the Power Inverter or
the appliance. When first using a rechargeable device, check the inverter’s
temperature for the first 10 minutes. If it becomes abnormally hot, do not use
this device with the Inverter.
2. Flip the Power Switch to the On (I) position to turn on. Do not use the appliance
until the green power LED indicator is on.
3. Turn on appliance. If an alarm sound is heard, turn off the appliance.
Caution: It is recommended that the vehicle be started 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 Warn-
ing # 23 on page 4), do not run the vehicle’s engine within an enclosed area.
4. After use, disconnect the appliances, flip the Power Switch to the Off (O) position.
Maintenance
1. Keep this unit clean and dry. Unplug the unit before cleaning. Clean only the
outside of this unit with a soft, dry cloth; never clean this unit with water or
harsh cleaners.
2. Aside from the fuse, this device does not contain any user replaceable parts. If
it needs service, take it to a qualified technician.
3. If the fuse needs replacement, simply disconnect the inverter, remove the fuse
cover on the back panel (see Back, page 5), remove the old fuse, and replace
it with another 40 Amp fuse of the same type. Replace the fuse cover and
reconnect the inverter before use.
SKU 92708 For technical questions, please call 1-800-444-3353.
Page 6
TroubleshootingTips
1. If the low battery alarm sounds, this means that the input voltage is below the
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.
2. If you are unsure if the inverter will have the proper amount of current to run
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.
3. If your television will not start, it is important to keep in mind that some appliances
(including many televisions) may require two to six times their wattage to start
up.
4. If your audio system buzzes while using this inverter, it is because some 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.
5. This inverter is made to minimize the interference with TV signals. However,
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.
6. If the low battery alarm is on all the time, try these corrective measures:
Recharge battery if in poor condition. Next, check the battery connection. You
may need to clean the connectors.
7. If you are getting a low output voltage, try reducing the load to minimize 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.
8. If you are not getting any power output, turn the power switch Off and On
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.
SKU 92708 For technical questions, please call 1-800-444-3353.
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