Schumacher Electric DSR122 Manuel D'utilisation page 11

USING BOOST MODE
1. Set Battery Voltage to 6V, 12V or 24V.
CAUTION:
Always visually confirm the voltage of the battery being charged. Not doing so can cause damage to the
battery and vehicle's electrical system. Other property damage or personal injury may occur.
NOTE: Additional safety settings have been added to the charger software. When the unit is in the 24
volt mode, the voltage boost output will not activate if battery voltage is less than 15.5 volts. If a 24 volt
battery has voltage below 15.5 volts, the voltage will be shown on the digital display and the "Volts" and
"24V" LEDs will flash.The START/STOP button must be pressed again after confirmation that the unit is
operating on a 24V system.
2. Set Battery Type to STANDARD, AGM, or GEL. (If unsure, consult the label on the battery or the battery
manufacturer.)
3. Set Output Rate to Boost.
NOTE: This mode should not be used for smaller batteries (lawn tractor, motorcycle, etc.).
4. Boost will start when the START/STOP button is pressed and will hold batteries at the following voltages:
6V: held at 6.8V
12V: held at 13.6V
24V: held at 27.3V
5. Boost will end when the START/STOP button is pressed.
USING ENGINE START MODE
Your battery charger can be used to jump start your car if the battery is low. Follow all safety instructions
and precautions for charging your battery. Wear complete eye protection and protective clothing.
WARNING: Using Engine Start mode WITHOUT a battery installed in the vehicle could cause damage to
the vehicle's electrical system.
NOTE: If you have charged the battery and it still will not start your car, do not use Engine Start mode, or
it could damage the vehicle's electrical system. Have the battery checked.
1. With the charger unplugged from the AC outlet, connect the charger to the battery, following the
instructions given in sections 6 and 7.
2. Set the Battery Voltage to 6V, 12V or 24V.
3. Set the Output Rate to Engine Start.
NOTE: The charger will supply charge to the battery before cranking.
4. Press the START/STOP button. The digital display will show On for 2 minutes.
5. Crank the vehicle when the digital display shows rdy. Do not crank for longer than 20 seconds.
NOTE: During extremely cold weather, or if the battery is under one volt, charge the battery for 5 minutes
before cranking the engine.
6. Wait three minutes before attempting to start again. The digital display will indicate the time
remaining before cranking again.
NOTE: During this cool down period, the charger is supplying the battery with a charge of up to 15A.
7. When the digital display times down to 0 and reads rdy, the Boost/Charging LED is on, you are
ready to crank the vehicle again. You have three minutes to perform an engine start (Pressing the
START/STOP button is NOT REQUIRED.)
8. If the engine still does not start, allow the charger to charge the battery for five more minutes before
cranking it again.
9. After the engine starts, unplug the AC power cord before disconnecting the battery clamps from the vehicle.
NOTE: If the engine does turn over but never starts, there is not a problem with the starting system; there
is a problem somewhere else with the vehicle. STOP cranking the engine until the other problem has been
diagnosed and corrected.
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