Owner`s manual

WARNING!! THE INVERTER IN THIS BACKUP POWER SYSTEM IS NOT

REVERSE-POLARITY PROTECTED!!

If the positive terminal of the battery is connected to the negative terminal of the inverter and

vice versa, the probable result is failure of every power FET in the inverter. To compound your

misfortune, this type of failure is very obvious AND IS NOT COVERED UNDER THE

WARRANTY. Pay close attention and double check when making the battery connections.

The Backup Power System's maximum peak current requirements are very high. If battery cables are

too small and/or connections are loose, efficiency and maximum output power are degraded. Small

cables or loose connections can cause dangerous overheating of the wire and/or terminals.

After the batteries are connected, tape the cables together every few inches with electrical

tape. This reduces the inductance of the wire resulting in a better waveform and less current in the

inverter's filter capacitors. This directly relates to efficiency. Refer to page 8 of this manual for

information on the type of batteries that should be used with the Backup Power System.

NOTE: CONNECTING THE BATTERY CABLES WILL CAUSE AN ARC USUALLY

ACCOMPANIED BY A "SNAP". THIS IS NORMAL - DON'T LET IT SCARE YOU.

WARNING!! Never disconnect the batteries while the system is delivering power or the battery

charger is operating. Always turn the system OFF first.

1. Check to be sure that all circuit breakers in the Backup Power System are in the OFF

position.

2. Locate the RED and BLACK battery cables in the battery compartment of the Backup

Power System. DO NOT DISCONNECT these cables from the inverter. The red and

black cables have been connected at the factory and have been properly torque to

10-12 ft lbs.

3. Place the batteries near the battery compartment so that connections to them can be

made. Locate the black jumper cable that was included with the unit. Connect on end of

this cable to the NEGATIVE terminal of one battery, and connect the other end to the

POSITIVE terminal of the other battery. This connects the two 12 volt batteries in series

to provide 24-volt DC power to the inverter.

4. OBSERVE BATTERY POLARITY!! Connect

the RED battery cable to the POSITIVE (+)

terminal. Connect the BLACK battery cable

to the NEGATIVE (-) terminal. When you

connect the last cable to the battery, this

will cause an arc usually accompanied by a

"snap." This is normal.

5. Place the batteries in the battery compartment

being careful not to short the battery terminals

to the top of the battery compartment.

6. A temperature sensor is mounted on the top of

the battery compartment. Be careful of this

sensor when placing the batteries in the

battery compartment.

4.3 BATTERY WIRING

BLACK (-)RED (+)

Jumper Cable