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Intro

Operation

Customer
Assistance

Warranty

Notes

Notice

Secondary Icons

Caution

Warning

Installation

Intro

Operation

Customer
Assistance

Warranty

Notes

Notice

Main Icons

Secondary Icons

Caution

Warning

Installation

9

8

Connecting Cables

Connecting Cables

Intro

Operation

Customer
Assistance

Warranty

Notes

Notice

Secondary Icons

Caution

Warning

Installation

Installation

Intro

Operation

Customer
Assistance

Warranty

Notes

Notice

Secondary Icons

Caution

Warning

Installation

Installation

Connect Power Source

on

Customer
Assistance

Warranty

Notes

N

e

Caution

Warning

on

3. Connect cable to the power source:

a. Connect the cable from the Negative (Black)

Terminal of inverter to the Negative Terminal of 
the power source. Make a secure connection.

b. Connect the cable from the Positive (Red) Terminal

of the inverter to the Positive Terminal of the power
source (the battery’s main fuse or the battery selector
switch, if you are using one). Make a secure connection.

You might observe a spark when you make this connection
since current can flow to charge capacitors in the inverter.

All power connections to your Cobra inverter must 
be Positive to Positive and Negative to Negative.

CAUTION Do not connect the inverter and another
AC source (such as a generator or utility power) 
to the AC wiring at 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 connectors result in excessive
voltage drop and may cause over heated wires 
and melted insulation.

CAUTION Reverse polarity connections (positive 
to negative) will blow internal fuses in the inverter
and may permanently damage the unit. Such
damage is not covered by the warranty.

CAUTION Remove any jewelry (watch, ring, etc.).
Be careful not to short circuit the battery with 
any metallic object (wrench, etc.).

WARNING 115 volt AC power is potentially lethal.
Do not work on AC wiring when it is connected to 
the inverter (even if it is switched off) unless the 
DC power source is physically disconnected from 
the inverter. Also, do not work on AC wiring if it is
connected to another AC power source such as 
a generator or the utility line.

WARNING You may observe a spark when making
the connection because current can flow to charge
the capacitors in the inverter. Do not make this
connection in the presence of flammable fumes.
Explosion or fire may result. Thoroughly ventilate the
battery compartment before making this connection.

Nothing 

Comes Close to a Cobra

®

10273_CPI875_PH2  7/10/07  6:04 PM  Page 8

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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