Schumacher PID-760 User manual

Model: PID-760
Power Inverter
Converts 12V DC battery power
to 120V AC household power
OWNERS MANUAL
PLEASE SAVE THIS OWNERS MANUAL AND READ BEFORE EACH USE.
This manual will explain how to use the inverter safely and effectively. Please
read and follow these instructions and precautions carefully.

CONTENTS
IMPORTANT SAFETY INSTRUCTIONS..................................................................5
PERSONAL SAFETY PRECAUTIONS....................................................................6
BEFORE USING YOUR INVERTER........................................................................6
CONNECTING INVERTER CABLES.......................................................................8
OPERATING INSTRUCTIONS.................................................................................8
POWER SOURCE..................................................................................................10
HOW POWER INVERTERS WORK ......................................................................10
LED DISPLAY .........................................................................................................10
IF THE INVERTER FUSE BLOWS.........................................................................11
TROUBLESHOOTING............................................................................................11
SPECIFICATIONS ..................................................................................................13
REPLACEMENT PARTS ........................................................................................13
LIMITED WARRANTY ............................................................................................14

• 5 •
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS – This manual will show you how to use
your inverter safely and effectively. Please read, understand and follow these
instructions and precautions carefully, as this manual contains important safety
and operating instructions.
WARNING: The inverter output is 120V AC and can shock or electrocute the
same as any ordinary household AC wall outlet.
WARNING: Pursuant to California Proposition 65, this product contains
chemicals known to the state of California to cause cancer and birth defects or
other reproductive harm. Wash hands after handling.
•Do not cover or obstruct the inverter’s vents.
•Use the inverter in a well-ventilated area.
•This inverter is not intended for use by children.
•Do not expose the inverter to rain or snow.
•Ensure that the inverter is located away from normal trafc areas.
•Use only accessories recommended or sold by the manufacturer.
•Do not operate the inverter with damaged or undersized wiring.
•Do not operate the inverter if it has received a sharp blow, been dropped or
otherwise damaged in any way; take it to a qualied service person.
•Do not disassemble the inverter; take it to a qualied service person when
service or repair is required. Incorrect reassembly may result in a risk of re or
electric shock.
•Make sure the inverter is not close to any potential source of ammable
fumes, gases or clothing.
•Do not place the inverter in areas such as battery compartments or engine
compartments where fumes or gases may accumulate.
•Disconnect both AC and DC power from the inverter before attempting any
cleaning.
•DO NOT operate the inverter if you, the inverter, the device being operated
or any other surfaces that may come into contact with any power source are
wet. Water and many other liquids can conduct electricity, which may lead to
serious injury or death.
•Do not place the inverter in direct sunlight. The ideal air temperature for
operation is between 50° and 80°F.
•Only connect the power inverter to a 12 volt accessory outlet or 12 volt battery.
•Do not attempt to connect the inverter to any other power source, including an
AC power source. Connecting to a 6 volt or 16 volt battery will cause damage to
the inverter.

• 6 •
•Do not modify the AC or USB receptacle in any way.
•Do not try extending or otherwise changing the 12 volt power cord attached to
your inverter.
•Incorrect operation of your inverter may result in damage and personal injury.
•This device does not include an internal Ground Fault Circuit Interrupter
(GFCI). For GFCI protection, use a Coleman Cable 02822 GFCI outlet.
PERSONAL SAFETY PRECAUTIONS
•Wear complete eye and clothing protection when working near lead-acid
batteries. Always have someone nearby for help.
•Remove all personal metal items from your body, such as rings, bracelets,
necklaces and watches. A lead-acid battery can produce a short circuit current
high enough to weld a ring to metal, causing a severe burn.
•Never smoke or allow a spark or ame in the vicinity of the battery or engine.
BEFORE USING YOUR INVERTER
•This inverter is designed to be used with a single battery, up to group 31
(130 Ah or smaller). The recommended source of power is a 12 Volt deep-
cycle battery, due to their high reserve capacity. Automotive batteries are
recommended for only a short period of time of an hour or less.
•Do not use the inverter with a product that draws a higher wattage than the
inverter can provide, as this may cause damage to the inverter and product.
When you turn on a device or a tool that runs on a motor, the device goes through
two stages:
1. Start Up – Requiring an initial surge of power (commonly known as the
“starting” or “peak” load).
2. Continuous Operation – Power consumption drops (commonly known as
the “continuous load”).
The wattage (WATTS) or amperes (AMPS) can normally be found stamped or
printed on most devices and equipment, or in the user’s manual. Otherwise,
contact the manufacturer to nd out whether the device you want to use is
compatible with a modied sine wave.
To calculate the wattage: Wattage = AMPS x 120 (AC Voltage).
To calculate the starting load: Starting Load = 2 x wattage.
In general, the startup load of the device or power tool determines whether your
inverter has the capability to power it.
Always run a test to establish whether the inverter will operate a particular piece of
equipment or device. In the event of a power overload, the inverter is designed to
automatically shut down.
This safety feature prevents damaging the inverter while testing devices and
equipment within the wattage range of the inverter.

• 7 •
When using the vehicle’s 12 volt accessory port, this inverter is designed to supply
60 to 70 watts when the vehicle is not running. With the vehicle’s engine running,
it can supply up to 100 watts. To use the full output, you must connect the inverter
directly to your battery.
NOTE: The 100 watt limit is to accommodate the fuse ratings for all vehicles.
Some vehicles may allow the full output. If the vehicle fuse blows when you
switch on the device you are trying to use, you have to either use a smaller
device or you must connect the inverter directly to the battery.
IMPORTANT: This inverter uses a modied sine waveform (diagram A) which is
not quite the same as power company electricity (diagram B). For the following
devices, we strongly recommend that you use caution and check the device’s
manual to make sure it is compatible with modied sine waveform.
1. Switch mode power supplies
2. Linear power supplies
3. Class 2 transformers
4. Line lter capacitors
5. Shaded pole motors
6. Fan motors
7. Microwave ovens
8. Fluorescent and high intensity lamps (with a ballast)
9. Transformer less battery chargers
Using the inverter with any of these devices may cause the device to run
warmer or overheat.
Modiedsinewaveform
produced by inverter
DiagramA DiagramB
Puresinewaveform
typicalofhomeACoutlet
IMPORTANT:Ifyouareusingthepowerinvertertooperateabattery
charger,monitorthetemperatureofthebatterychargerforabout10
minutes.Ifthebatterychargerbecomesabnormallywarm,disconnectit
fromtheinverterimmediately.
NOTE: You can use an extension cord from the inverter to the device without
signicantly decreasing the power being generated by the inverter. For best
operating results, the extension cord should be no longer than 50 feet.

• 8 •
CONNECTING INVERTER CABLES
The inverter and power source must be in the OFF mode.
IMPORTANT: Make sure to connect your inverter only to a 12 volt power supply.
INVERTER CONNECTION:
1. Locate the positive and negative plastic terminals on the right side of the
inverter and remove the terminal caps completely.
2. Install the positive (red) cable ring lug onto the positive (red) terminal screw.
Install the negative (black) cable ring lug onto the negative (black) terminal
screw. Tighten each terminal so that the cable cannot come loose.
CONNECTING INVERTER CABLETOAVEHICLE(100wattsmaximum):
1. Remove the cigarette lighter from its outlet.
2. Push the 12 volt power plug rmly into the outlet.
CONNECTING INVERTER CABLES TO 12V BATTERY OR 12V POWER
SOURCE:
1. Keep hands, hair, clothing and jewelry clear of battery terminals.
2. Wear eye protection and clothing protection.
3. Connect the negative (black) inverter terminal cable to the power source
negative (-) or battery terminal. Make sure the connection is secure.
4. Connect the positive (red) inverter terminal cable to the power source
positive (+) or battery terminal. Make sure the connection is secure.
5. To disconnect the inverter, reverse the above steps.
NOTE: The internal speaker may make a brief “beep” when the inverter is being
connected to or disconnected from the 12 volt power source.
CAUTION: Failure to make the correct connections will result in blown fuses and
permanent damage to the inverter.
OPERATING INSTRUCTIONS
1. Connect the inverter (see Connecting Inverter Cables section).
2. Press and hold the ON/OFF switch to turn the inverter on. (The internal
speaker will make a brief “beep”. This is normal.)
3. The digital display turns on.
4. Make sure the device to be operated is turned OFF.
5. Plug the device into the inverter AC outlet.
6. Turn the inverter on. The Watts LED will glow and the digital display will
show O.
7. Turn the device on. The display will now show the total wattage used by the
device. To change the digital display, press the ON/OFF switch.

• 9 •
8. To disconnect, reverse the above procedure.
9. Press and hold the ON/OFF switch to turn the inverter off.
NOTE: If more than one device is to be powered, start one device at a time to
avoid a power surge and overloading the inverter. The surge load of each device
should not exceed the inverter’s Continuous Operation wattage rate.
CAUTION: If there is a short circuit or power surge in the device,  will display
and the alarm will sound. Press the ON/OFF switch to turn off the alarm. If the 
displays after several attempts, there is a short circuit or the device requires more
“starting” or “peak” load than the inverter is capable of providing.
USING THE USB PORT
TheUSBportprovidesupto2.0Aat5VDC.
1. Plug the device into the USB port.
2. Press and hold the ON/OFF switch to turn the inverter on. (The internal
speaker will make a brief “beep”. This is normal.)
3. Turn the USB device on.
4. Reverse these steps when nished using the USB port.
USING THE INVERTER TO OPERATE A TV OR AUDIO DEVICE:
The inverter is shielded and ltered to minimize signal interference. Despite this,
some interference may occur with your television picture, especially with weak
signals. Below are some suggestions to try and improve reception.
1. Try altering the position of the inverter, antenna cables, and television
power cord. Add an extension cord from the inverter to the TV, to isolate its
power cord and antenna cables from the 12 volt power source.
2. Try coiling the television power cord and the input cables running from the
12 volt power source to the inverter.
3. Afx one or several “Ferrite Data Line Filters” to the television power cord.
Ferrite Data Line Filters can be purchased at most electronic supply stores.
4. Try grounding the inverter with an 18 AWG (minimum) wire, using as short
a length as possible.
NOTE: You may hear a “buzzing” sound being emitted from inexpensive
sound systems when operated with the inverter. This is due to ineffective lters
in the sound system’s power supply. Unfortunately, this problem can only be
resolved by purchasing a sound system with a higher quality power supply or
higher quality lter.
WARNING: The inverter draws power, even when the switch is OFF.
To avoid battery drain, disconnect the inverter when not in use.

• 10 •
POWER SOURCE
Your average automobile or marine battery at full charge will provide an ample
power supply to the inverter for approximately 3 hours when the engine is off.
The actual length of time the inverter will function depends on the age and
condition of the battery and the power demand being placed by the device
being operated with the inverter.
If you decide to use the inverter while the engine is off, we recommend you
turn OFF the device plugged into the inverter and disconnect the inverter’s
plug from the 12 volt accessory outlet before starting the engine. To
maintain battery power, start the engine every 2 to 3 hours and let it run for
approximately 10 minutes to recharge the battery.
Although it is not necessary to disconnect the inverter when turning over the
engine, it may briey cease to operate as the battery voltage decreases. While
the inverter draws very low amperage when not in use, it should be unplugged
to avoid battery drain.
HOW POWER INVERTERS WORK
There are two stages involved in transforming 12 volt DC (battery) power into
120 volt AC (household voltage):
STAGE 1: The power inverter uses a DC to DC transformer to increase the 12
volt DC input voltage from the power source to 145 volt DC.
STAGE 2: The inverter then converts the 145 volt DC into 120 volts AC
(household voltage) using advanced MOSFET transistors in a full bridge
conguration. A modied sine wave is generated by this conversion.
LED DISPLAY
The LED display identies the current status of the inverter.
VOLTS DC: The voltage of the vehicle’s battery, Portable Power jump starter
or DC power source.
VOLTS AC: The voltage supplied to the device through the AC receptacle.
WATTS: The power or wattage supplied to the device plugged into the inverter.
An audio alarm will sound when any of the following codes display. To stop the
alarm, press the ON/OFF switch:
 – The inverter is not functional.
 – The vehicle’s battery voltage is more than 15.5 volts. The inverter will
automatically restart after the voltage drops below 15.0 volts.
 – The continuous load demand from the device exceeds the inverter’s
wattage output.

• 11 •
 – The inverter is overheated and automatically turns off for a period of 1 to
3 minutes to cool. Make sure the inverter is well ventilated. It will automatically
restart after it cools.
 – The vehicle’s battery voltage is less than 10.5 volts.
 – Short circuit, power surge or overload in the device.
IF THE INVERTER FUSE BLOWS
Your power inverter is tted with a fuse, which should not have to be replaced
under normal operating conditions. A blown fuse is usually caused by reverse
polarity or a short circuit within the device or equipment being operated.
If the fuse does blow, take the inverter to a qualied technician for repair.
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE REASON/SOLUTION
Alarm is on. Display shows . Device
demands too much surge
power.
Device has a short circuit
Display shows . 12 volt
battery is too low.
Display shows voltage
between 10.5 and 11.0
volts.
Display shows . 12 volt
voltage is too high.
Cycle the inverter power OFF
and ON. If problem persists,
use a larger inverter or a
smaller device.
Remove the defective device.
Recharge/replace battery.
12V battery is low. Recharge or
replace battery. The inverter will
automatically shut off after battery
voltage reaches 10.5 volts.
If in a vehicle, repair/replace
the alternator or charging
system. Use a properly sized
and rated 12 volt battery. If
the input voltage returns to 15
volts or less, the inverter will
automatically restart.

• 12 •
PROBLEM POSSIBLE CAUSE REASON/SOLUTION
Alarm is on.
(continued)
Display shows . Device
demands more than the
inverter’s continuous
power rating.
Display shows .
Inverter is too hot.
Cycle the inverter power OFF
and ON. If problem persists,
use a larger inverter or a
smaller device.
Increase the ventilation to the
inverter. Move the inverter to a
cooler area. Reduce the power
consumption of the device. The
inverter will automatically reset
after cooling.
Inverter does not
turn on.
Poor contact at terminals
Fuse is blown.
Check for poor connection to
battery or power supply. Make
sure connection points are
clean. Rock clamps back and
forth for a better connection.
A blown fuse is usually caused
by reverse polarity or a short
circuit within the inverter. To
replace, contact a qualied
service technician who will
diagnose the problem and
replace the fuse(s) with the
appropriate replacement(s).
Device does not
operate properly
when rst
connected to the
inverter.
The inverter may not have
the required capacity to
operate the device.
Turn the inverter switch OFF
and ON, to reset the inverter.

• 13 •
SPECIFICATIONS
Maximum Continuous Power ..........................................................760 Watts
Surge Capability (Peak Power).....................................................1520 Watts
No Load Current Draw .......................................................................... <0.6A
Wave Form......................................................................Modied Sine Wave
Input Voltage Range..............................................................10.5V-15.5V DC
Output Voltage Range............................................................... 120V±5% AC
Low Battery Alarm ....................................................... Audible, 11V±0.3V DC
Low Battery Shutdown ...........................................................10.5V±0.3V DC
High Battery Shutdown ..........................................................15.0V±0.5V DC
Optimum Efciency ............................................................................... >85%
AC Outlet......................................................................Two, NEMA 5-15 USA
USB Port ............................................................................. One, 5V 2.0 Amp
Dimensions .................................................................. 8.5" L x 4" W x 2.2" H
Weight ..........................................................................approximately 3.5 lbs.
REPLACEMENT PARTS
12V Accessory plug with cable....................................................3899001511
Battery cable with clamps ...........................................................3899001513

• 14 •
LIMITED WARRANTY
SCHUMACHERELECTRICCORPORATION,801BUSINESSCENTERDRIVE,
MOUNTPROSPECT,IL60056-2179,MAKESTHISLIMITEDWARRANTYTO
THE ORIGINAL RETAIL PURCHASER OF THIS PRODUCT. THIS LIMITED
WARRANTY IS NOT TRANSFERABLE OR ASSIGNABLE.
Schumacher Electric Corporation (the “Manufacturer”) warrants this inverter
for two (2) years from the date of purchase at retail against defective material
or workmanship that may occur under normal use and care. If your unit is
not free from defective material or workmanship, Manufacturer’s obligation
under this warranty is solely to repair or replace your product with a new or
reconditioned unit at the option of the Manufacturer. It is the obligation of
the purchaser to forward the unit, along with proof of purchase and mailing
charges prepaid to the Manufacturer or its authorized representatives in
order for repair or replacement to occur.
Manufacturer does not provide any warranty for any accessories used with this
product that are not manufactured by Schumacher Electric Corporation and
approved for use with this product. This Limited Warranty is void if the product
is misused, subjected to careless handling, repaired, or modied by anyone
other than Manufacturer or if this unit is resold through an unauthorized retailer.
Manufacturer makes no other warranties, including, but not limited to, express,
implied or statutory warranties, including without limitation, any implied warranty
of merchantability or implied warranty of tness for a particular purpose. Further,
Manufacturer shall not be liable for any incidental, special or consequential
damage claims incurred by purchasers, users or others associated with this
product, including, but not limited to, lost prots, revenues, anticipated sales,
business opportunities, goodwill, business interruption and any other injury or
damage. Any and all such warranties, other than the limited warranty included
herein, are hereby expressly disclaimed and excluded. Some states do not
allow the exclusion or limitation of incidental or consequential damages or
length of implied warranty, so the above limitations or exclusions may not apply
to you. This warranty gives you specic legal rights and it is possible you may
have other rights which vary from this warranty.
THIS LIMITED WARRANTY IS THE ONLY EXPRESS LIMITED WARRANTY
AND THE MANUFACTURER NEITHER ASSUMES OR AUTHORIZES
ANYONE TOASSUME OR MAKE ANY OTHER OBLIGATION TOWARDS
THE PRODUCT OTHER THAN THIS WARRANTY.
Schumacher® and the Schumacher Logo are registered
trademarks of Schumacher Electric Corporation.