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Operation

Customer
Assistance

Warranty

Notes

Notice

ons

Caution

Warning

Installation

3

2

Important Safety Information

Intro

Operation

Customer
Assistance

Warranty

Notes

Notice

Main Icons

Secondary Icons

Caution

Warning

Installation

Introduction

WARNING Power inverters contain components 
that can produce arcs or sparks. To prevent fire 
or explosion, do not install the inverter in areas or
compartments containing batteries or flammable
materials or in locations that require ignition-
protected equipment.

WARNING To reduce the risk of fire, do not cover 
or obstruct the ventilation openings. Do not install
inverter in zero-clearance compartment.

Warning: Wash Hands After Handling Power Cord

The power cord on this product contains lead, a chemical
known in the state of California to cause birth defects or
other reproductive harm.

Caution: Rechargeable Appliances

Certain chargers for small nickel cadmium batteries can be
damaged if connected to the Cobra 800 watt inverter. Two
particular types of equipment are prone to this problem: 

1. Small battery-operated

appliances such as flashlights,
razors, and night lights that 
can be plugged directly into 
an AC receptacle to recharge.

2. Certain battery chargers for

battery packs used in hand 
power tools. These chargers
have a WARNING label stating
that dangerous voltages are
present at the battery terminals.

This problem does not occur with the vast majority of
battery operated equipment. Most use a separate charger
or transformer that is plugged into the AC receptacle and
produces a low voltage output. If the label on the AC
adapter or charger states that it produces a low voltage 
AC or DC output (less than 30 volts), the inverter will 
have no problem powering the adapter safely.

Cobra  800 Watt Output Waveform

Some very sensitive electronic equipment may not operate
satisfactory on “square wave” or “modified sine wave.” 
The output waveform is referred to as “square wave” or
“modified sine wave.” It is a stepped waveform designed 
to have characteristics similar to the sine wave shape of
utility power. A waveform of this nature is suitable for most
AC loads (including linear and switching power suppliers
used in electronic equipment, transformers and motors).

Quick Evaluation Before Installation

This section provides you with basic information about the
inverter and how to check its performance before installation.

Be Sure to Have on Hand:

£

A 12 volt DC power source (such as a vehicle battery).

The power source must provide
between 11 and 15 volts DC and 
be able to supply enough current to
run the test load. As a rough guide,
divide the wattage of the test load by
10 to get the current (in amperes)
the power source must deliver.

£

The provided two foot direct-to-battery 12 gauge cable. 

Only use the cable provided with
your inverter.

£

A test load that can be plugged into the AC receptacle on
the inverter for short term testing at a low power level.

Quick Evaluation 
Before Installation

Intro

Operation

Customer
Assistance

Warranty

Notes

Notice

Main Icons

Secondary Icons

Caution

Warning

Installation

Introduction

Nothing 

Comes Close to a Cobra

®

Plug In Directly

Dangerous Voltages

Power Supply

Cable

Test Load

10273_CPI875_PH2  7/10/07  6:04 PM  Page 2

Summary of Contents for CPI 875

Page 1: ...e further assistance after reading this manual Cobra Electronics offers the following customer assistance services For Assistance in the U S A Automated Help Desk English only 24 hours a day 7 days a week 773 889 3087 phone Customer Assistance Operators English and Spanish 8 00 a m to 6 00 p m CT Monday through Friday except holidays 773 889 3087 phone Questions English and Spanish Faxes can be re...

Page 2: ...erter is out of warranty a letter will automatically be sent informing you of the repair charge or replacement charge If you have any questions please call 773 889 3087 for assistance Maintenance and Product Service Intro Operation Customer Assistance Warranty Notes Notice Main Icons Secondary Icons Caution Warning Installation Customer Assistance Nothing Comes Close to a Cobra Cooling Fan A3 A2 P...

Page 3: ...Statements specify conditions which could cause damage to the unit or other equipment WARNING Statements identify conditions that could result in personal injury or loss of life General Precautions 1 Never install the inverter in a boat s engine compartment where gas and battery fumes are present 2 Do not operate the inverter if it has been dropped or damaged in any way 3 Do not open the inverter ...

Page 4: ... into the AC receptacle and produces a low voltage output If the label on the AC adapter or charger states that it produces a low voltage AC or DC output less than 30 volts the inverter will have no problem powering the adapter safely Cobra 800 Watt Output Waveform Some very sensitive electronic equipment may not operate satisfactory on square wave or modified sine wave The output waveform is refe...

Page 5: ...l unit as close to battery as possible without being in the same compartment to minimize the length of cable required to connect the inverter to the battery It is better and cheaper to run longer AC wires than longer DC wires cables CAUTION To avoid fire do not cover or obstruct ventilation openings Do not install inverter in a zero clearance compartment Overheating may result CAUTION The inverter...

Page 6: ...urn the On Off Switch on the inverter to the off position If the power source is a DC power supply switch it off as well 2 Connect cable to the Power Input Terminals on right side panel of the inverter The red terminal is positive and the black terminal is negative Insert the ends of the cables onto the terminals and tighten the screws to clamp the cables safely Mounting Connecting Cables Intro Op...

Page 7: ...t the same time The inverter will be damaged if its output is connected to AC voltage from another source Damage can even occur if the inverter is switched off CAUTION Do not connect the inverter to an AC branch circuit that has high power consumption loads It will not operate electric heaters air conditioners stoves and other electrical appliances that consume more than 800 watts CAUTION Loose co...

Page 8: ...Secondary Icons Caution Warning Installation Nothing Comes Close to a Cobra Power Consumption For each piece of equipment you will be operating from the inverter you must determine the battery s reserve capacity how long the battery can deliver a specific amount of current in automotive batteries usually 25 amperes or ampere hour capacity a measure of how many amperes a battery can deliver for a s...

Page 9: ...e Main Icons Secondary Icons Caution Warning Installation Operation Operating Limits Power Output The inverter can deliver 800 watts for about 60 minutes The inverter must cool for 15 minutes before it can resume operation at 800 watts Note The wattage rating applies to resistive loads The inverter will operate most AC loads within its power rating Some induction motors used in freezers pumps and ...

Page 10: ...ut should be above 12V To extend the life of the fan it will stop when there is no load The speed of the fan increases as the load increases The unit is completely insulated in input and output for added safety Problem Symptom Low output voltage No output voltage No output voltage after prolonged use No output voltage Protect indicator lighted No output voltage No output voltage Low battery alarm ...

Page 11: ...d by accident 2 In the event of misuse or abuse of the product or as a result of unauthorized alterations or repairs 3 If the serial number has been altered defaced or removed 4 If the owner of the product resides outside the U S A All implied warranties including warranties of merchantability and fitness for a particular purpose are limited in duration to the length of this warranty Cobra shall n...

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