Schumacher SC1281 Manual Del Usuario página 7

start, wait 3 minutes before cranking
again. This allows the charger and
battery to cool down.
5. NOTE: During extremely cold weather,
or if the battery is under 2 volts,
charge the battery for 5 minutes
before cranking the engine.
6. If the engine fails to start, charge the
battery for 5 more minutes before
attempting to crank the engine again.
7. After the engine starts, unplug the AC
power cord before disconnecting the
battery clamps from the vehicle.
8. Clean and store the charger in a dry
location.
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.
ENGINE STARTING NOTES
During the starting sequence listed above,
the charger is set to one of three states:
• Wait for cranking – The charger waits
until the engine is actually being cranked
before delivering the amps for engine start
and will reset if the engine is not cranked
within 15 minutes. (If the charger resets, it
sets itself to the default start up settings).
While waiting for cranking, the digital
display shows rdy.
• Cranking – When cranking is detected,
the charger will automatically deliver up
to its maximum output as required by
the starting system for up to 3 seconds
or until the engine cranking stops. The
digital display shows a countdown of the
remaining crank time.
• Cool Down – After cranking, the charger
enters a mandatory 3 minute (180
second) cool down state. The digital
display indicates the remaining cool
down time in seconds. It starts at 180
and counts down to 0. After 3 minutes,
the digital display will change from
displaying the countdown to displaying
rdy. The CHARGING LED will then be lit.
TESTER AND CHARGER MODES
When first powered up, the unit operates
only as a TESTER, not as a charger.
Pressing the START/STOP button
deactivates the tester mode and activates
the CHARGER mode. Pressing the START/
STOP button again will shut-off the charger
mode and activate the TESTER mode.
USING THE BATTERY VOLTAGE TESTER
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. Connect the charger to a live grounded
120V AC outlet.
3. If necessary, press the BATTERY
TYPE button until the correct battery
type is indicated.
4. Read the voltage on the digital display.
Keep in mind that this reading is only a
battery voltage reading; a false surface
charge may mislead you. Compare the
reading to the following chart.
6V Battery
Voltage
Reading
6.4 or more
6.1 to 6.3
Less than 6.1
NOTE: The battery tester is only designed
to test batteries. Testing a device with
a rapidly changing voltage could yield
unexpected or inaccurate results.
POWER-UP AUTO-START
When charger is first powered up, if
START button is not pressed within
10 minutes, but a battery is properly
connected, the unit will automatically
switch from TESTER mode to CHARGER
mode. In that case, unit will set the
battery type to GEL, and the RATE will
automatically switch between BOOST and
CHARGE rates as needed.
USING THE ALTERNATOR
PERFORMANCE TESTER
1. With the charger unplugged from the
AC outlet, connect the charger to the
battery, following the instructions given
in previous sections.
2. Connect the charger to a live grounded
120V AC outlet.
3. Start the vehicle, rev the engine at
2000 rpm for 30 seconds and turn
on the vehicle's headlights or other
accessories.
4. Read the voltage on the digital display.
If you get a reading between 13.4
volts and 14.6 volts, the alternator
is working properly. If the reading
is less than 13.4 volts or more than
14.6 volts, have the charging system
checked by a qualified technician.
• 7 •
12V Battery
Battery
Voltage
Condition
Reading
12.8 or more Charged
12.2 to 12.7 Needs charging
Less than 12.2 Discharged