Tundra HDi3000 - Manual (Page 13)

E_ HD(i)_Guide (E-HD(i)-GD-1113-EN) 13
4.3 Trouble loads - Medical equipment
The waveform of your inverter is called a “Modified Sine Wave.” It is a stepped waveform suitable for most AC
loads and designed to have characteristics similar to sine wave delivered by public utility power services. Some
appliances however may not adequately interpret the waveform produced by the inverter and could, although
unlikely, function erratically or be damaged. If you intend to feed medical equipment or if you are unsure about
powering a device with a modified sine wave power inverter, contact the manufacturer of the said device. The
use of our pure sine wave inverter (HTS Series) may be required.
4.4 Trouble loads - Microwave
The power rating advertised on microwave ovens represents the cooking power which refers to the power being
delivered to the food being cooked. The actual operating power requirement is approximately 40 to 100% higher
than the advertised cooking power (i.e.: 600w microwave could consume +/- 960w). The actual power
consumption is usually stated on the back of the microwave. If the operating power requirement cannot be found
on the back of the microwave, check the owner's manual or contact the manufacturer.
* NOTE: Amperage x Voltage = Wattage (i.e.: 8A x 120Vac = 960W)
4.5 Trouble loads - Tools
The power rating of certain tools like circular saws or pumps refers to the power required during normal
operation. The actual operating power requirement at start up may be up to 300% higher. In a tool application, it
is recommended to buy an inverter more powerful than the tools seem to require, in order to be able to support
the start-up surge required by certain tools. Tundra HD and HDi Series were engineered for these kinds of loads.
5 Maintenance
Very little maintenance is required to keep the inverter operating properly:
- You should clean the immediate environment around the inverter to prevent dust accumulation on the
circuitry inside the inverter
- DC input bolts should be tightened periodically
- Cables should be inspected regularly for exterior condition
- Terminals on batteries and the fuse must be cleaned twice a year
- You must also keep your batteries as clean as possible to prevent current loss that may affect inverter
operation
CAUTION! If you work on the DC input terminals of your power inverter, disconnect both cables at the
battery side to avoid any short circuit.