Vector MAXX SST VEC054D User Manual download pdf (Page 11)

battery connections are tight and the battery (or batteries) is (are) fully-charged. If the

connections are good and the battery is charged, but the voltage still drops below 11

volts, you may need to use a larger battery (or battery combination).

CAUTION

Rechargeable Devices

Certain rechargeable devices do not operate well from a modified sine

wave inverter. They only operate properly from a standard household

outlet, which provides a pure sine wave. Therefore, the manufacturer

recommends that these types of devices be operated from a standard

household outlet only, not from the inverter.

This problem does not occur with most battery-operated equipment.

Most of these devices use a separate charger or transformer that is

plugged into an AC receptacle. This inverter is easily capable of

running most chargers and transformers.

OPERATING INSTRUCTIONS

Power Source Requirements

The inverter will operate from input voltages between 11 and 15 volts DC. If the

voltage drops below 10.6 volts, an audible low battery warning alarm will sound.

The inverter will shut down if the input voltage drops below 10.5 volts DC. This built-

in feature protects the battery from being completely discharged.

The inverter will also shut down if the input voltage exceeds 15.5 volts. This

protects the inverter against excessive input voltage. Although the inverter has built-in

protection against over voltage, it may still be damaged if the input voltage exceeds

15.5 volts.

Inductive loads, such as TVs and stereos, require more current to operate than do

resistive loads with the same wattage rating. Induction motors, as well as some TVs,

may require two to six times their rated wattage to start up. Because the MAXX SST

™

inverters have a peak watt power rating, many such appliances and tools may be

safely operated. The equipment that needs the highest starting wattage are pumps and

compressors that start under load. This equipment can be safely tested. If an overload

is detected, the inverters will simply shut down until the overload situation is corrected.

Use the front panel switch to turn OFF the inverter, then ON, to reset the inverter.

CAUTIONS

Exceeding recommended voltage limits will void manufacturer’s

warranty.

NEVER try to use the inverter with any 12 volt DC power source

that uses a POSITIVE ground. (Most vehicles and boats use negative

ground systems.)

The DC power source must be a well-regulated DC power supply as typically found

in vehicle and deep-cycle marine batteries. The DC power source may also be two

12 volt batteries connected in parallel. On larger applications the power source may

be several batteries connected in parallel as shown in the following “Battery Wiring”

diagram.

The following chart shows the approximate amperage and corresponding wattage at

120 volts AC for various common tools and appliances.

Appliance Consumption in Amps and Watts Chart

APPLIANCE AMPS@ WATTS@

120VAC 120VAC

Laptop Computer 0.5 55

Household Power Mixer 2 220

240-Watt Stereo/Amplifier 2.2 242

Refrigerator 3 330

3/8" Variable Speed Drill 3 330

Variable Speed Jig Saw 3 330

10-Speed Blender 3.2 352

Belt Sander 3.4 374

3/8" Reversible Drill 3.5 385

Household Food Processor 3.6 396

Computer and Monitor 4 440

Portable Vacuum 4.6 506

8-Cup Coffee Maker 5.5 605

Electric Trimmer 5.5 605

1/2" Hammer-Drill 5.5 605

Reciprocating Saw 6 660

Vacuum Cleaner 7.2 792

1-1/8" Rotary Hammer 7.8 858

1/6 H.P. Submersible Sump Pump 8 880

Compact Microwave Oven 8.5 935

10" Bench Saw 13.0 1500

Note:

Appliance specifications may vary from brand to brand. This table is offered

only as a guide to approximate power ratings. Check appliance manuals or

product labeling for actual ratings. For continuous use at maximum output, the

MAXX SST

™

inverter must be connected to a DC power supply capable of

providing at least 1/10th of the inverter’s continuous wattage rating.

The inverter will operate most AC loads within its power rating. Some induction

motors used in refrigerators, freezers, pumps and other motor-operated equipment,

require very high surge currents to start them. The inverter may not be able to start

some of these motors even though their rated current draw is within specifications for

this power inverter.

If a motor refuses to start, observe the battery voltage using a DC voltmeter while

trying to start the motor. If the battery voltmeter drops below 11 volts while the inverter

is attempting to start the motor, this may be why the motor won’t start. Make sure the

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Vector MAXX SST VEC054D User Manual Page 11

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