Napa 90-150 Owner's Manual page 9

MAINTAIN MODE
(FLOAT MODE MONITORING)
When the Charged/Maintaining
(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
This unit charges and maintains 6V 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
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 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: If you have charged the battery
and it still will not start your car, do not
use the Engine Start feature, or it could
damage the vehicle's electrical system.
Have the battery checked.
1. Connect the charger to the battery
and AC power, as explained in
sections 6 and 7.
2. With the charger plugged in and
connected to the battery of the vehicle,
use the Rate Selection button
to select either the
Start or
the battery is properly connected, the
yellow/orange
LED will light solid and the display
will show the current voltage of the
battery. If the display shows "0.0",
check the battery connections.
3. Press the START button to enable the
Engine Start output. The display will
show "ON".
4. When the Digital Display shows "Rdy",
crank the engine until it starts or 5
seconds pass. If the engine does
not start within 5 seconds, wait 45
seconds before attempting to crank
the engine again. NOTE: During
extremely cold weather, or if the
battery is under two volts, first Boost
the battery for at least several minutes
before using the Engine Start feature.
NOTE: After 3 minutes in Engine Start
mode, the charger will allow the charger
and the battery to cool down for 180
seconds. If the engine fails to start, use
the 40A Boost mode to put energy
into the battery for several minutes before
attempting to crank the engine again.
5. After the engine starts, press the
STOP button, unplug the AC power
cord and finally disconnect the battery
clamps from the vehicle, as explained
in sections 6 and 7.
6. Clean and store the charger in a dry
location.
ENGINE STARTING NOTES
During the starting sequence listed above,
the charger is set to one of four states:
• Wait for ready – The charger charges the
battery for 2 minutes before the Wait for
Cranking state. While waiting for ready, the
digital display shows On and the engine
can be cranked. For severely discharged
batteries, it is not recommended to crank
during this time.
• Wait for cranking – The charger waits
until the engine is actually being cranked
before delivering the amps for engine
start. 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 7 seconds.
• Cool Down – After repeated cranking
during a 3-minute ready period, 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
• 9 •
12V Engine
6V Engine Start rate. If
Boosting/Charging