CEN-TECH 69662, Owner'S Manual & Safety Instructions

Page 6

For technical questions, please call 1-800-444-3353.

Item 69662 

installation

  Read the entiRe impORtant SaFetY inFORmatiOn section at the beginning of this 

manual including all text under subheadings therein before set up or use of this product.

tO pRevent SeRiOuS inJuRY FROm aCCiDental OpeRatiOn: 

make sure that the power Switch is in the off-position and unplug the tool from 

its electrical outlet before performing any procedure in this section.

note:

 For additional information regarding the parts listed in the following pages, 

refer to 

Parts List and Diagram

 on page 11.

CautiOn!

  This Inverter must only be connected 

to batteries with a output voltage of 12 volts DC.  

Lower voltage will not operate the Inverter properly, 

and more voltage could damage the Inverter 

or the device being powered.  Do not use this 

Inverter with positive ground electrical systems.

the inverter is configured to have a number of 

shut-down points, for the safety of the operator, 

the unit, and the devices being used with it.

•  If the DC input voltage drops too low, the 

alarm on the Inverter will sound.  Should the 

input voltage drop further, the Inverter will 

shut down automatically to prevent permanent 

battery damage.  Recharge the battery soon.

•  If the DC input voltage exceeds 15V the 

Inverter will shut down automatically.

•  If the output load power rises higher 

than the rating power of the Inverter; the 

unit may shut down automatically.

•  The Inverter may automatically shut down 

if its internal temperature gets too high.

note:

  Even though this inverter has built-in mechanisms 

to minimize damage, these situations should be avoided 

because they can still damage the inverter or battery.

1.  Place the Inverter on a dry, level, non-flammable, 

stable surface.  Make sure the Inverter has 

adequate ventilation and is not in direct sunlight.

2.  Connect one end of a ground wire (not included, 

use at least recommended wire thickness from 

specification sheet) to the wing nut located on the 

back of the Inverter.  Then connect the other end 

of the ground wire to a paint/rust free grounded 

metal surface, such as the vehicle chassis.

3.  Battery Type Selection:

•  Use only deep cycle lead-acid batteries with this 

inverter, such as 12 volt marine/RV deep-cycle 

batteries.  Do not use automotive, engine starting 

(SLI), or maintenance-free wet cell batteries with 

this inverter; they are designed for repeated, 

shallow discharge and will wear out quickly.

•  Gel and AGM (Absorbed Glass Mat) 

batteries can be used with this inverter, but 

they require special charging procedures.  

Refer to battery supplier’s instructions.

4.  Battery capacity selection:

inverter 

Output

about 1 hour 

discharge time

(minimum battery 

capacity)

about 4 hour 

discharge time

(Optimal battery 

capacity)

500W

80 Ah

200 Ah

1000W

150 Ah

400 Ah

1500W

240 Ah

700 Ah

2000W

300 Ah

1000 Ah

3000W

450 Ah

1500 Ah

4000W

600 Ah

2000 Ah

5000W

750 Ah

2500 Ah

Consult the chart above for approximate run 

time at different battery capacities.  If the battery 

does not have a capacity this large individually, 

use a bank of batteries as explained below.

5.  Battery Bank assembly instructions:

a. 

Read the following safety rules before 

assembling the battery bank:

• 

Connect batteries in parallel (negative 

terminals together to one cable; 

positive terminals together to the 

other cable) as shown in Battery 

Bank example illustration OnlY.

• 

Do not connect 12v batteries in series (from 

negative of one battery to the positive of the 

next).  this connection can result in voltage 

high enough to cause eleCtROCutiOn.

• 

Wear splash-resistant anSi-approved 

safety goggles and electrically insulated 

gloves while assembling battery bank.

•  Only connect similar batteries together in a 

battery bank.  Do not connect old and new 

batteries together, wet and gel cells together, 

or batteries of different capacities together.

•  Connect all batteries in the battery bank together 

using cables of the thickness recommended on 

the specification sheet or thicker.  Since amp 

draw on this low-voltage circuit will be very 

high, thinner cables present a fire hazard.

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Setup