1. INTRODUCTION
Your new Samlex SI-750HP inverter is one in a series of the most
advanced DC to AC inverters available. With proper care and appropriate
usage, it will give you years of dependable service in your car, truck, RV
or boat.
The SI-750HP supplies 750 watts of continuous power, with a 1500
watt peak, in the form of three household-type outlets that are ready to
deliver 110 volt AC power whenever and wherever you need it! The
heavy-duty inverter has enough power to run most household or
electronic appliances. It also comes equipped with battery clips to
handle higher amperage/load applications, such as power tools, stereo
amplifiers, vacuums, etc. Added safety features include automatic
shutdown and a low battery alarm to prevent damage to your battery.
This Power Inverter is configured with the latest Soft Start Technology
(SST). Before introduction of Soft-Start, high startup currents from large
inductive loads could shut down the inverter. Soft Start improves inverter
operation. Three major features incorporated in SST include: First
gradual voltage ramp-up during inverter startup. This eliminates failed
cold starts under load. Second, output that momentarily dips in voltage
and quickly recovers to allow large motorized loads to start. This
eliminates almost all shutdowns from momentary overloads. Last, the
inverter automatically re-starts when an overload that causes inverter
shutdown is removed. Previously, manual reset was required.
This power inverter also incorporates a new cooling technology. The new
design more efficiently cools the power transistors, and combined with
Soft Start, dramatically increases reliability and the life of the product.
Given proper care and appropriate use, your inverter is covered by a 1-
year limited warranty. See the Warranty Information at the end of this
manual
2. CONTROLS, INDICATORS AND CONNECTORS
Figure 1 details the front panel of the inverter. The front panel provides
two LED indicators. A green LED shows proper operation when lit. The
red LED shows inverter shutdown from overload, over voltage, low
voltage or over temperature. Power is supplied through two grounded
standard North American outlets. Outlets accommodate either two or
three pin AC plugs. An On/Off Switch turns the inverter circuitry On and
Off. The switch is used to force a reset of inverter circuits if it is
switched Off, then On.
4.
TROUBLE/ INDICATION POSSIBLE CAUSE
SUGGESTED REMEDY
Low
battery alarm
Bad connection or wiring Tighten all DC
sounds continuously
connections
Low battery
Low battery voltage
Recharge battery.
alarm sounds
Remove load from
inverter while
recharging battery
Motorized power tool Excessive start-up load If appliance does not
won’t start
start,then appliance is
drawing excessive
wattage and will not
work with inverter
Motorized power tool Purely inductive load
Make the load not
does not operate at
purely inductive.
correct speed
Operate an incandes
cent lamp at same time
as motor
Television/Radio
Snow in picture, buzz
Keep inverter and
interference
in speaker
antenna distant from
each other. Use
shielded antenna cable.
Connect antenna to
amplifier
9. FUSE REPLACEMENT
If external fuses blow, (or breakers trip), then there is a short or overload
in the DC wiring. Find and fix the problem before replacing
,
the fuses (or
resetting the breaker). After fuse replacement, reconnect the inverter.
This power inverter is equipped with 3 pcs of 35A automotive type ATC
fuses. These will not blow unless there is a serious problem inside the unit.
These fuses are located near the DC input terminals. Samlex recommends
contacting Technical Support for guidance. Based on experience, it is best
to return the unit to Samlex for repair. Samlex Technical Support can be
reached by calling 1-800-561-5885. You may also contact us by visiting our
website @www.samlexamerica.com.
13.