Schumacher PSI-2000 - Manual (Page 7)

7
4. The case temperature exceeds
140 ºF.
Attention: The PSI-2000 is fitted with
cooling fans that run as needed while
the inverter is operating. If the cool-
ing fans are unable to maintain a cool
enough temperature for safe operation,
the inverter will automatically shut
down. If the inverter automatically shuts
down or a continuous audible alarm is
heard:
1. Turn the inverter rocker switch to
the OFF (O).
2. Determine the source of the problem,
and resolve it before continuing to
use the inverter.
HoW Do PoWer InVerTerS
Work?
There are two stages involved in trans-
forming 12-volt DC (or battery) power
into 110V AC (household voltage):
STAge 1: The PSI-2000 power in-
verter uses a DC to DC transformer to
increase the 12-volt DC input voltage
from the power source to 145-volts
DC.
STAge 2: The inverter then converts the
145-volts DC into 110-volts AC (house-
hold voltage) using advanced MOSFET
transistors in a full bridge configuration.
A "modified sine wave" waveform is
generated by this conversion.
I. IMPorTAnT SAfeTy MeASUreS
Precautions to keep in mind be-
fore and while using your power
inverter:
• For the most effective use, place the
power inverter on a flat surface.
• Keep the inverter dry.
• DO NOT allow it to come into contact
with rain or moisture.
• DO NOT operate the inverter if you,
the inverter, the device being operated
or any other surfaces that may come
in contact with any power source are
wet. Water and many other liquids can
conduct electricity, which may lead to
serious injury or death.
• Do not place the inverter on or near
heating vents, radiators or other
sources of heat.
• Do not place the inverter in direct
sunlight. The ideal air temperature
for operation is between 30º and
105ºF.
• Keep the inverter well ventilated
in order to properly disperse heat
generated while it is in use.
• While in use, make sure there are
several inches of clearance around
the top and sides of the inverter.
•
Do not use the inverter near flam-
mable materials.
• Do not place or install the inverter
in areas such as battery or engine
compartments where fumes or
gases may accumulate.
• Only connect the power inverter to a
12-volt battery. Connecting to a 6V
or 16V battery will cause damage to
the inverter.
• Only connect the power inverter to
a 12-volt battery with the supplied
12-volt power cords. Make sure the
cord connections to the inverter are
tight.
• Do not modify the positive and nega-
tive cables or plug in any way.
• Make sure the power consumption
of the device or equipment you want
to operate is compatible with the
capacity of the inverter, and does not
exceed 2000 watts.