Schumacher PSI-2000 User Manual
InstructIon Manual
Model PSI-2000
2000 Watt DC to AC Power Inverter
Converts 12V DC Battery Power Into
110-120V AC Home Power
The recommended source of power is a
12-volt deep-cycle battery due to their high
reserve power capacity. Automotive batteries
are recommended for only a short period of
time of an hour or less.
Save These Instructions
Questions? Call Customer Service, 7 am – 4:30 pm
Central Standard Time: 1-800-621-5485
DSR Professional Products
Schumacher Electric Corporation
801 Business Center Drive
Mount Prospect, IL 60056
Send Warranty Product Returns to:
Schumacher Electric Corporation
1025 E. Thompson, Hoopeston, IL 60942-0280
0099000597/1006
The advanced surge capacity of the PSI-2000 power inverter gives it the means to
start most electrical devices including: color televisions, TV/VCR/DVD combinations, small microwaves, refrigeration electric coolers, small air conditioners.
Warning: Handling the cord on this product or cords associated with accessories
sold with this product, may expose you to lead, a chemical known to the State of
California to cause cancer and birth defects or other reproductive harm. Wash
hands after handling.
A. BEFORE USING PSI-2000
It is important to know the continuous
wattage of the device you plan to use
with the inverter. The PSI-2000 must be
used with devices drawing 2000 watts
or less. If the wattage is not marked on
the device, an estimate can be made by
multiplying the AC input current (Amps)
by the AC voltage (110V).
Devices like TVs, fans or electric motors require additional power to start
(commonly known as the “starting
or peak power”). The PSI-2000 can
supply a momentary surge in wattage;
however even devices rated less than
the maximum 2000 watts can exceed
the inverters surge capability and cause
an automatic overload shutdown.
Make sure the device you are using is
compatible with a modied sine wave
inverter.
Attention: 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
2000-watt range.
If a device will not operate properly
when rst connected to the inverter, turn
the inverter rocker switch ON (I), OFF
(O), and ON (I) again in quick succession. If this procedure is not successful,
it is likely that the PSI-2000 inverter
does not have the required capacity to
operate the device in question.
Important: Make sure you connect
your inverter to a 12-volt power supply
only. Connecting to another voltage
including any AC power source, will
result in damage.
• Do not try extending or otherwise
changing the 12-volt power cord of
your inverter.
• Install in negative ground applications only.
• Incorrect operation of your inverter
may result in damage and personal
injury. Electrical current on a 110-volt
circuit can be very dangerous.
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B. FASTENING THE PSI-2000 TO A FLAT SURFACE
For convenience, the PSI-2000 can be
fastened to a at surface, horizontally or
vertically. The area where the inverter
is to be fastened must be dry, well ventilated and away from any combustible
products or fumes.
1. Turn off the PSI-2000.
2. Place the back of the PSI-2000
with the mounting bracket against
a secure and at surface.
3. Attach the inverter to the at surface
using corrosion resistant screws.
INVERTER FEATURES:
A. ON/OFF Rocker Switch – Turns
inverter on and off.
B. LED Indicator Light – (Green = power
ON, Red = Overload, interruption in
power).
C. Two, 110V GFCI AC Outlets
D. Two Pairs, 12-Volt Power Cords
E. Two, High Speed Cooling Fans –
keeps inverter cool. The speed
of the fan is faster as the load
increases. Fan does not run when
inverter turned off.
F. Analogic Output Power Display -
shows 110V AC continuous power
consumed.
G. Two , Posit i ve Batter y Cabl e
Terminals (Red) – accepts positive
connector cable.
H. Two, Negative Batte r y Ca ble
Terminals (Black) – accepts negative
connector cable.
I. Ground Terminal – grounds inverter
to reduce electrical shock.
C. GROUNDING THE PSI-2000
To avoid electrical shock, it is necessary to ground the PSI-2000 Inverter
as well as the device powering it. The
inverter should be grounded using #8
AWG copper wire (not included).
NOTE: Do not turn on the inverter or the
power source until the inverter and the
power source are grounded.
1. Turn off the PSI-2000.
2. Locate the chassis ground screw
underneath the negative terminal on
the left side of the inverter. Unscrew
the two hex nuts and one washer.
3. Strip the insulation of the wire back
1.5 inches and in between the two
washers, wrap the bare end of the
#8 AWG copper wires around the
4. Holding the wire in place, screw
the hex nut on the threaded screw
extension and then screw on the
last hex nut to secure the wire
connection.
5. Using the other washer and hex nut,
secure the opposite end of the wire
and attach it appropriately so the
inverter is grounded correctly.
a. Vehicle – connect to the chassis
or unpainted frame part or engine
block of vehicle.
b. Boat – connect to boat grounding
system.
c. Fixed location – connect to a
ground rod or other appropriately
rated ground.
threaded screw extension.
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D. CONNECTING INVERTER CABLES
The inverter and the power source must
be in the OFF mode.
CONNECTING INVERTER CABLES
TO 12V BATTERY OR 12V POWER
SOURCE
INVERTER CONNECTION:
1. Locate the positive and negative
plastic terminals located on the left
side of the inverter. Using a athead
or standard screwdriver, unscrew
the positive (red) and negative
(black) terminal screws just enough
to be able to insert the bare end of
the connector cables.
2. Insert the bare end of the positive
(red) cable into the positive terminal
and bare end of the negative (black)
cable into the negative terminal.
Tighten each terminal screw so the
cable cannot come loose.
1. Keep hands, hair, clothing and
jewelry clear of battery terminals.
2. Wear protective eye (safety glasses)
and clothing protection.
3. Connect the negative (black) inverter
terminal cable to the power source
or negative (-) battery terminal.
Connect the positive (red) inverter
terminal cable to the power source
or positive (+) batter y terminal.
Make sure the connections are
secure.
NOTE: Failure to make the correct connections will result in blown fuses and
permanent damage to the inverter.
E. CONNECTING YOUR PSI-2000
TO TURN ON:
1. Push the rocker switch, located
on the right side, to the “ON” (I)
position. The LED indicator light
should glow GREEN verifying the
inverter is receiving power and can
deliver power to your device. (A brief
audio alarm may sound or red LED
may ash. This is normal.)
2. Turn on the power source or device
to be powered.
TO TURN OFF:
1. Push the rocker switch, located
on the right side, to the “OFF” (O)
position.
2. Turn off the power source and the
device.
3. Disconnect inverter from power
source and device.
4. Wait for the inverter to be cool to the
touch before disconnecting it from
the power source.
NOTE: If more than two devices are to
be powered, start one device at a time to
avoid a power surge and overloading the
inverter. The surge load of each device
NOTE: The PSI-2000 inverter and
device should always be unplugged
when not in use.
should not exceed 2000 watts.
You can use an extension cord from
the inverter to the device without sig-
nicantly decreasing the power being
generated by the inverter. For best
operating results, the extension cord
should be no longer than 50 feet.
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F. USING GFCI OUTLET
The GFCI (Ground Fault Interrupter)
must be tested before each use. To
test:
1. Turn the inverter ON.
2. Push the "Reset" button located on
the GFCI receptacle, rst to assure
normal GFCI operation.
3. Plug a nightlight (with an "ON/OFF"
The PSI-2000 includes two, "GFCI"
(Ground Fault Circuit Interrupter) outlets located on the right side of the
inverter. The purpose of a GFCI outlet
is to quickly stop the ow of electricity
in the event a ground fault occurs on the
device plugged into the inverter’s GFCI
outlet. Use only a 3-prong grounded
plug when using the GFCI outlet.
switch) or other product (such as a
lamp) into the GFCI receptacle and
turn the product "ON."
4. Push the "Test" button located on
the GFCI receptacle. The nightlight
or other product should go "OFF."
5. Push the "Reset" button, again.
The light or other product should
go "ON" again.
NOTE: If the light or other product
remains "ON" when the "Test" button
NOTE: The GFCI outlet could have
been shipped in the “tripped” position.
It needs to be “reset” to ensure safe
electrical operation. The inverter needs
to be ON, connected to a power source
and a device plugged into the inverter to
reset. To reset: press the “TEST” button
(stops ow of electricity to outlet) on the
outlet face. Next, press the “RESET”
button (restores ow of electricity to
outlet) on the outlet face.
is pushed, the GFCI is not working
properly and should not be used. Call
Customer Service.
G. LEDS AND AUDIO ALARM
Green – Power On
voltage source between 12 volts and
14 volts.
Red Light and/or Audio Alarm
Current Overload – Red LED glows for
a short time and inverter shuts down.
Current load too high for inverter. Reduce current demand.
Voltage Overload – Red LED glows and
inverter shuts down. Voltage range of
15.5V ± 0.5V DC too high for inverter.
Voltage exceeding 16 volts may damage the inverter. Reduce voltage range
to 12 volts to 14 volts.
Voltage Shortage – Alarm sounds
indicating voltage is getting low (10.5V
± 0.3V DC). Inverter shuts down and
red light glows when voltage falls below 10.0V ± 0.3V DC. Inverter needs
Temperature Overload – Red LED
glows for a short time and inverter
shuts down. Provide ample ventilation
for inverter to restart.
Analogic Output Power Display - shows
AC continuous power consumed. Five
lights indicate half of the continuous
output power and ten lights indicate full
continuous power consumption. When
the inverter is OFF, no lights appear.
USING THE INVERTER TO
OPERATE A TV OR AUDIO DEVICE
The inverter is shielded and ltered to
minimize signal interference. Despite
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this, some interference may occur with
your television picture, especially with
weak signals. Below are some suggestions to try and improve reception.
Make sure the television antenna
produces a clear signal under normal
operating conditions (i.e., at home
plugged into a standard 110V AC wall
outlet). Also, ensure that the antenna
cable is adequately shielded and of
good quality.
Try altering the positions of the inverter,
antenna cables, and television power
cord. Add an extension cord from the
inverter to the TV so as to isolate its
power cord and antenna cables from
the 12-volt power source.
H. BLOWN FUSE
A blown fuse is usually caused by reverse polarity or a short circuit within
the device or equipment being operated.
If the fuse blows, take the inverter to a
qualied technician for repair.
POWER SOURCE
Your average automobile or marine battery will provide an ample power supply to the inverter for 30 to 45 minutes
even when the engine is off. The actual
length of time the inverter will function
depends on:
1. Age and condition of the battery.
2. Power demand being placed by the
equipment being operated with the
inverter.
If you decide to use the inverter while
the engine is off: turn OFF the device
plugged into the inverter before starting the engine. Start the engine every
hour and let it run for approximately 10
minutes to recharge the battery.
Try coiling the television power cord
and the input cables running from the
12 -volt power source to the inverter.
Afx one or several "Ferrite Data Line
Filters" to the television power cord.
Ferrite Data Line Filters can be purchased at most electronic supply stores
including Radio Shack - Part Number
273-105.
Attention: 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. This problem
can only be resolved by purchasing
a sound system with a higher quality
power supply.
Attention: Although it is not necessary
to disconnect the inverter when starting
the engine, it may briey cease to operate as the battery voltage decreases.
When the inver ter is not supplying
power, it draws a very low amperage
from the battery. The inverter may be
left connected to the battery for up to
three hours. It is recommended that the
inverter always be disconnected when
not in use.
SAFETY FEATURES
The LED Indicator light will turn from
GREEN to RED and the inverter will
automatically turn itself off when:
1. The power input from the battery
drops to approximately 10 volts.
(When the power input drops to
approximately 10.5 volts, an alarm
will sound for an extended period).
2. The power input from the battery
exceeds 15.5 volts.
3. The continuous load demand from
the equipment or device being
operated exceeds 2000 watts.
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4. The case temperature exceeds
140 ºF.
Attention: The PSI-2000 is tted with
cooling fans that run as needed while
the inverter is operating. If the cooling fans are unable to maintain a cool
enough temperature for safe operation,
the inverter will automatically shut
down. If the inverter automatically shuts
down or a continuous audible alarm is
heard:
1. Turn the inverter rocker switch to
the OFF (O).
2. Determine the source of the problem,
and resolve it before continuing to
use the inverter.
I. IMPORTANT SAFETY MEASURES
Precautions to keep in mind before and while using your power
inverter:
• For the most effective use, place the
power inverter on a at sur face.
• Keep the inverter dry.
• DO NOT allow it to come into contact
with rain or moisture.
• DO NOT operate the inverter if you,
the inverter, the device being operated
or any other surfaces that may come
in 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 on or near
heating vents, radiators or other
sources of heat.
• Do not place the inverter in direct
sunlight. The ideal air temperature
for operation is between 30º and
105ºF.
• Keep the inverter well ventilated
in order to properly disperse heat
generated while it is in use.
HOW DO POWER INVERTERS
WORK?
There are two stages involved in transforming 12-volt DC (or battery) power
into 110V AC (household voltage):
STAGE 1: The PSI-2000 power inverter uses a DC to DC transformer to
increase the 12-volt DC input voltage
from the power source to 145-volts
DC.
STAGE 2: The inverter then converts the
145-volts DC into 110-volts AC (household voltage) using advanced MOSFET
transistors in a full bridge conguration.
A "modified sine wave" waveform is
generated by this conversion.
• While in use, make sure there are
several inches of clearance around
the top and sides of the inverter.
• Do not use the inverter near am-
mable materials.
• Do not place or install the inverter
in areas such as battery or engine
compartments where fumes or
gases may accumulate.
• Only connect the power inverter to a
12-volt battery. Connecting to a 6V
or 16V battery will cause damage to
the inverter.
• Only connect the power inverter to
a 12-volt battery with the supplied
12-volt power cords. Make sure the
cord connections to the inverter are
tight.
• Do not modify the positive and negative cables or plug in any way.
• Make sure the power consumption
of the device or equipment you want
to operate is compatible with the
capacity of the inverter, and does not
exceed 2000 watts.
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• If you are using the power inverter to
operate 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.
• If you hear a continuous alarm or
automatic shut down, turn the inverter
OFF immediately. Do not restart the
inverter until the source of the problem
has been identied and corrected.
• Disconnect the inverter when not in
use in order to avoid battery drain.
• If you are powering the inverter with
an automobile or marine battery, start
the engine every 30 to 45 minutes
and let it run for about 10 minutes to
recharge the battery.
J. TROUBLESHOOTING
PROBLEM: Low or No Output
Voltage
Reason/Solution
1. Poor contact at terminals.
Unhook and rehook the 12-volt
PROBLEM: Audible Alarm On All
The Time
Reason/Solution
1. Input voltage below 11 volts.
Recharge or replace battery to
connections.
maintain adequate power input.
2. Using incorrect type of voltmeter
to test output voltage.
Use a true RMS reading meter.
PROBLEM: Red LED On
Reason/Solution
1. Battery voltage below 11 volts.
Recharge or replace battery.
2. Equipment being operated is
drawing too much power.
Use a higher capacity inverter or do
not use this equipment.
3. Inverter is too hot (thermal shut
down mode).
Allow inverter to cool. Check for
adequate ve ntilation. Reduc e
the load on the inverter to rated
continuous power output.
2. Poor or weak battery condition.
Recharge or replace battery.
PROBLEM: Device Does Not Work
Reason/Solution
1. Device does not turn on.
Try turning the inverter ON, then
OFF, then ON a gain. Contact
the device manufacture for start
up surge and/or if the device is
compatible with a modified sine
wave. An inverter producing a larger
power out-put may be required.
2. Inverter may be defective.
See warranty and call customer
service.
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K. SPECIFICATIONS
Maximum Continuous Power .............................................................. 2000 watts
Surge Capability (Peak Power) ...........................................................4000 Watts
No Load Current Draw ................................................................................< 0.8A
Wave form ............................................................................. Modied Sine Wave
Input Voltage Range ......................................................................10.5V–15V DC
AC outlets ....................................................................................Two, 110V GFCI
LIMITED WARRANTY
Schumacher Electric Corporation warrants your inverter to be free from defects in
material and workmanship, excepting abuse or misuse, for a period of two years
from the date of sale to the original user or consumer purchaser. If your inverter
malfunctions or fails within the 24-month warranty period because of a defect in
material or workmanship, we will repair it without charge or replace it.
This warranty is in lieu of all other express warranties. The duration of any implied
warranty, including but not limited to, any implied warranty of merchantability or
tness for a particular purpose made in respect to your inverter, is limited to the
period of the express warranty set forth above.
For warranty service, return inverter as well as proof of purchase to the factory
or a designated agent:
Schumacher Electric Corporation
Warranty Service Department
1025 Thompson, Hoopeston, IL 60942
Phone: 800-621-5485 (Hours: 7 a.m. - 4:30 p.m. CST)
You will be responsible for all insurance and freight or other transportation charges
to the factory or point of repair. We will return your inverter freight prepaid if repair is
covered under warranty. Your inverter should be properly packed to avoid damage
in transit since we will not be responsible for any such damage.
In no event shall Schumacher Electric Corporation be liable for consequential damages.
Some states do not allow limitations on the length of the implied warranty or the exclusion or limitations of incidental or consequential damages, so the above limitations or
exclusions may not apply to you. This warranty gives you specific legal rights and you
may also have other rights which may vary from state to state.
Schumacher Website: www.batterychargers.com
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