Operation - Craftsman 320.66810 Operator's Manual

20.0-volt lithium-ion cordless 1/2-in. impact wrench
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SmartChip
TM
BATTERY
PROTECTION
SmartChip
TM
intuitive circuitry
protects
the battery pack from extreme
temperature,
over-discharge
and over-charge.
To protect the battery from
damage and prolong its life, the battery pack's
SmartChip
TM
circuitry
will turn
off the battery
pack if it becomes
overloaded
or if the temperature
becomes
too
high during use. This may happen in extremely
high torque,
binding and stalling
situations.
This intelligent
system will shutdown
your battery pack if its operating
temperature
exceeds
176°F (80°C) and will begin normal operation
when it
returns to 32°F (0°C) - 122 °F (50°C).
The POWER BAR will display four flashing
LED lights if the SmartChip
TM
circuitry
detects a momentary
overload.
You can conveniently
reset the
battery pack by pressing the POWER BAR button.
Press the POWER BAR
button again to display the remaining
charge.
NOTE: The POWER BAR continues
to flash four LED lights after reset, place the
battery pack on the charger,
charger to evaluate the battery condition
(Fig.4)
NOTE: A significantly reduced run time after fully charging the battery pack indicates
that the batteries are near the end of their usable life and must be replaced.
COLD WEATHER
OPERATION
This Lithium-ion
battery pack will provide optimal performance
in temperatures
between 32°F (0°C) and 104°F (40°C). When the battery pack is very cold, it may
"pulse" for the first minute of use to warm itself. Put the battery pack on a tool
and use the tool in a light application.
After about a minute, the battery pack will
have warmed
itself and will operate normally.
WHEN TO CHARGE
THE BATTERY
PACK
The Lithium-ion
battery can be
Fig. 3
charged
at any time and will
not develop a "memory"
when
charged
after only a partial
discharge,
it is not necessary
to run down the battery
pack
charge
before recharging.
Remove the battery
pack from
the tool when convenient
for
you and your job.
*
Use the POWER BAR to
determine
when you need to
recharge the battery pack.
*
You can "top-off"
your
battery pack's
charge
before starting
a big job or long period of use.
66810
ManuaLRevised_09
0407
Page 16

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