then the inverter. Let the units cool down before you switch them on again. Check if the cooling fan is not
obstructed and make sure that there is sufficient air flow around the unit.
TROUBLESHOOTING
If you experience problems with appliances not operating correctly when there are two or more devices connected
to the same circuit, the only remedy is to disconnect one of the units to reduce the load. If the inverter overheats
when the load is at the rated maximum, try running the vehicle engine while running the inverter. (REMEMBER to
switch OFF the inverter when starting the engine.) This will boost the battery voltage allowing the inverter to
operate more efficiently, allowing use of the engine for longer periods of time in high load applications.
Audio Systems
Some inexpensive portable stereo systems will emit a buzzing noise through the speakers when operated by an
inverter. This is because the power supply in the stereo unit does not adequately filter the modified sine wave
produced by the inverter. The only solution is to use a stereo system with a more efficient power supply.
GENERAL SAFETY
1. Always operate the inverter from the correct power source, 12V or 24V battery ( As applicable).
2. When connecting the cables from the battery to the inverter observe the correct polarity, RED is positive ( + )
and BLACK is negative (-).
3. Ensure the DC input connections are secure, because a loose contact can result in excessive voltage drop and
can cause overheated wires and melted insulation.
4. Locate the inverter and power source (battery) away from any inflammables to avoid any possible fire or
explosion. NOTE. It is normal to experience sparks when connecting the positive terminal of the inverter from
the battery. This is due to the current flow charging the capacitors in the inverter.
5. Where applicable, always ground the inverter before operation to avoid possible shock.
6. Check that the power consumption of the appliance to be operated is compatible with the output capacity of the
inverter. Care should be taken with microwave ovens as the power quoted on the front panel is usually the
heating power and not the actual power drawn. For appliances with no power rating ( W or watts) shown then
the current rating ( A or Amps ) can be multiplied by 230 to give an approximate power rating.
7. The battery must be of adequate capacity (ampere-hour) to run the inverter at the power required. The
maximum current ratings for the various inverter models are’
12V-1500W = 156A 24V-1500W = 78A
12V-2000W = 208A 24V-2000W = 104A
12V-3000W = 312A 24V-3000W = 156A
Ampere-hour (Ah) capacity is a measure of how many amperes a battery can deliver for 20 hours, e.g. a
typical marine or RV battery rated @100Ah can deliver 5amps for 20hrs (5A x 20hrs = 100Ah)
8. In the event of a continuous audible alarm or automatic shut off, immediately switch off the inverter until the
problem has been identified and rectified.
9. Disconnect the inverter when not in use.
10. Do not expose the inverter to moisture or site near sources of heat and inflammable materials.
INSTALLATION
1. Install inverter in a cool, dry and well ventilated area away from any inflammable material.
2. Ensure the DC power cables are as short as possible (<2m ) and of suitable size to handle the current
required. This is to minimise any voltage drop when the inverter draws high currents. Remember solid, secure,
clean connections are essential for optimum performance.
3. Grounding. Connect the chassis ground lug ( where applicable ) to earth ground or car chassis using # 8 AWG
wire, preferably with green / yellow insulation.
4. Battery Type and Size. Make sure the battery has enough capacity to run the inverter at the power needed.
Inverters can be powered by normal car batteries but it is recommended to start the engine every 30 - 60
minutes and let it run for about 10minutes to recharge the battery. Remember to switch OFF the inverter. For
the larger inverters or where extended operating times are required, then Deep Cycle leisure or traction type
lead acid batteries are recommended as they are designed for deep discharge where they will be repeatedly
discharged and recharged. When sizing your battery it is better to have extra capacity as you will have more
reserve and the battery will not be discharged as deeply. To obtain sufficient battery capacity you may need to
use more than one battery. Two identical batteries can be connected in parallel (+) to (+) and (-) to (-) to double
the capacity.
CAUTION: Do not connect batteries of different makes or AMP- hour (Ah) rating. Connections to battery post
must be made with solid secure connectors that provide a reliable, low resistance connection. Clean terminals
regularly.
