Maintenance And Care - Schumacher SC1393 Owner's Manual

AUTOMATIC CHARGING
When the Automatic Charge is performed,
the charger switches to the maintain mode
automatically after the battery is charged.
ABORTED CHARGE
If charging cannot be completed normally,
charging will abort. When charging aborts,
the charger's output is shut off and the
display will show "bad / bat" and an error
code. Do not continue attempting to charge
this battery. Have it checked or replaced.
DESULFATION MODE
The display will show "SUL" when a sulfated
battery is detected, and the charger will go
into desulfation mode. If the desulfation is
not successful after 10 hours, the charger
will go into abort mode. The display will
show "bAd / bAt / F02".
COMPLETION OF CHARGE
Charge completion is indicated by the
green Charged/Maintaining LED.
When lit, the charger has switched to the
maintain mode of operation.
MAINTAIN MODE
(FLOAT MODE MONITORING)
When the green
LED is lit, the charger has started
maintain mode. In this mode, the
charger keeps the battery fully charged
by delivering a small current when
necessary. If the charger has to provide
its maximum maintain current for a
continuous 12 hour period, it will go into
abort mode (see Aborted Charge section).
This is usually caused by a drain on the
battery or the battery could be bad. Make
sure there are no loads on the battery. If
there are, remove them. If there are none,
have the battery checked or replaced.
MAINTAINING A BATTERY
The SC1393 maintains both 6 and 12 volt
batteries, keeping them at full charge.
NOTE: The maintain mode technology
allows you to safely charge and maintain
a healthy battery for extended periods
of time. However, problems with the

12. MAINTENANCE AND CARE

A minimal amount of care can keep your
battery charger working properly for years.
• Clean the clamps each time you are
finished charging. Wipe off any battery fluid
that may have come in contact with the
clamps to prevent corrosion.
• Occasionally cleaning the case of the
charger with a soft cloth will keep the finish
shiny and help prevent corrosion.
Charged/Maintaining
battery, electrical problems in the
vehicle, improper connections or other
unanticipated conditions could cause
excessive current draws. As such,
occasionally monitoring your battery and
the charging process is required.
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 previous sections.
2. Plug the charger AC power cord into
the AC outlet.
3. If necessary, press the
Type button until the correct 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 chart below.
6 V Battery
Voltage
Reading
6.4 or more
6.1 to 6.3
Less than 6.1
POWER-UP IDLE TIME LIMIT
If no button is pressed within 10 minutes
after the battery charger is first powered
up, the charger will automatically switch
from tester to charger if a battery is
connected. In that case, the charger will
be set to charge at the
battery type.
TESTING AFTER CHARGING
After the unit has been changed from
tester to charger (by selecting a charge
rate), it remains a charger. To change the
battery charger back to a tester, press the
Rate Selection button until all charge
rate LEDs are off.
• Coil the input and output cords neatly when
storing the charger. This will help prevent
accidental damage to the cords and charger.
• Store the charger unplugged from the AC
power outlet, in an upright position.
• Store inside, in a cool, dry place. Do not
store the clamps clipped together, clipped to
the handle, on or around metal, or clipped
to the cables.
• 6 •
Battery
12 V Battery
Battery
Voltage
Condition
Reading
12.8 or more Charged
Needs
12.2 to 12.7
charging
Less than 12.2 Discharged
rate and AGM