Product Manual

6
If the unit is being used to operate a single sideband radio, the radio should be the ONLY device connected.
OUTPUT 1
OUTPUT 2
Each output terminal can supply up to 25 Amps, therefore do not connect more than 25 amps
of load to either output terminal. If the load exceeds 25 Amps but not the continuous rated
output of the unit, do the following: The output terminals must be connected to the load in
parallel ensuring that the wiring used has sufcient capacity to handle the current.
Troubleshooting
Operation
If the red Over-temperature LED and the audible alarm come on, the unit has overheated,
and it will shut down until it cools off sufciently. You may not have allowed sufcient space
around the unit for cooling, or there may be too many devices connected to the output of
the unit. Either reduce the number of devices connected to the unit, or reposition the unit for
better cooling. If necessary, direct a stream of moving air over the heat sink.
If the yellow Low Input LED comes on, the input voltage has dropped below 19 VDC (27 VDC
on the -24 version). To keep from completely discharging the batteries, the unit will shut
down until the voltage recovers to 21 VDC (29 VDC on the -24 version). Make sure that the
charging system is operating properly, and that the wires connecting the input voltage to the
unit are not corroded or damaged.
If the red Overload LED comes on the output current has exceeded the maximum rating. If the
unit is seriously overloaded, the yellow Low Output LED and the audible alarm will also come
on. The green Output On LED will still be on, but it will be dimmer than normal. Remove loads
To turn the unit on, simply move the power switch to the ON position. The alarm buzzer will
sound and the Low Input LED will come on briey, and then the green Output ON LED will illu-
minate. If you wish to adjust the output voltage, remove the cover plate (secured by 2 screws)
to expose the output adjust potentiometer. Reach in with a very small at blade screwdriver
to rotate the potentiometer. Clockwise increases the output voltage, and counter clockwise
decreases it. When you are done, replace the cover plate and securely tighten the screws.