Schumacher FARM & RANCH FR01336 Owner's Manual page 6

11. OPERATING INSTRUCTIONS
CHARGING THE BATTERY
Keep in mind: when charging a battery,
the more a battery is discharged, the
faster it absorbs charge from the charger.
In other words, it takes longer for the
battery to absorb the last few percents of
charge than the first several percents.
WARNING: When the START button is
pressed in either Boost mode, Charge/
Maintain mode or Engine Start mode, the
clamps are energized and will spark if
touched together. A spark near the battery
may cause an explosion.
NOTE: A marine (boat) battery must be
removed and charged on shore.
Boost or Charge/Maintain Mode
1. Place battery in a well-ventilated area.
2. Clean the battery terminals.
3. Set the switch to the OFF position.
4. Connect the battery, following the
precautions listed in sections 6 and 7.
5. Connect the charger to the electrical
outlet.
6. With the charger plugged in and
connected to the battery of the
vehicle, set the switch to the Boost/
Charge/Maintain
7. Select the Charge/Maintain
and the battery type.
• If the voltage of the battery is under
12.7V, the unit will automatically
switch to BOOST mode when the
Start button is pressed. When the
unit automatically switches to Boost
mode, the 50A Boost LED will light.
When the automatic Boost mode is
completed, the unit will automatically
switch to the Charge/Maintain rate
and complete the charge.
• If the unit doesn't automatically
switch to Boost Mode when the Start
button is pressed, you can manually
put the unit into the Boost mode.
Press the Rate Selection
until the 50A Boost
If the battery is properly connected
the LED will light solid and the
boosting process will start. Boost
mode will remain energized until the
Rate Selection button is pressed or
the main ON/OFF switch is set to
the OFF position. The unit will not
automatically switch to the Charge/
Maintain rate to complete the charge.
8. Press the START button.
• If the unit automatically switches to
the Boost, but the 6<>2A Charge/
position.
rate
button
LED lights.
• 6 •
Maintain rate is preferred, press the
Rate Selection
boosting) until the Charge/Maintain
LED is illuminated.
9. To stop the charging process, press the
STOP button, set the ON/OFF switch
to the OFF position and disconnect the
charger from the AC outlet and battery,
as explained in sections 6 and 7.
USING THE ENGINE START FEATURE
Your battery charger can be used to jump
start your car if the battery is low.
IMPORTANT: Follow the same safety
instructions and precautions as when
charging the battery. Wear complete eye
protection and clothing protection. Charge
your battery in a well-ventilated area.
WARNING: Using the ENGINE START
feature WITHOUT a battery installed
in the vehicle will damage the vehicle's
electrical system.
NOTE: If the engine turns 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.
NOTE: During extremely cold weather, or
if the battery is under two volts, first boost
the battery in 50A Boost mode for at least
several minutes before using the Engine
Start feature.
NOTE: If you have charged the battery
and it still will not start your car, do not
use the Engine Start feature, or it will
damage the vehicle's electrical system.
Have the battery checked.
Engine Start Mode
1. Set the ON/OFF switch to the OFF
(center) position.
2. Connect the charger to the battery and
AC power, as explained in sections 6
and 7.
3. With the charger plugged in and
connected to the battery of the vehicle,
set the ON/OFF switch to the Engine
Start position. If the battery is
properly connected, the yellow/orange
Engine Start
the display will show the current voltage
of the battery. If the display shows "0.0",
check the battery connections.
4. Use the Rate Selection
select either the 12V
or 6V Engine Start rate.
5. Press the START button to enable the
Engine Start output. The display will
show "ON".
button (while still
LED will light solid and
button to
Engine Start