Automatic Power-Off Function - Panasonic EYFLA4A Operating Instructions Manual

• Battery life varies slightly with ambient
temperature and battery characteristics.
The lamp is designed to provide a rough
indication of remaining battery life.
Indicator
Fully charged
Approx. 40% or less
remaining
Flashing Approx. 20% or
less remaining (indicates
need to recharge battery)
The battery pack will need
to be charged soon.
Flashing
No charge
The battery pack needs to
be charged.
(The tool's automatic
power-off function will
Flashing
activate at this stage.)

Automatic power-off function

• The automatic power-off function is
designed to prevent a loss of tighten-
ing torque due to reduced battery volt-
age. Once it has been activated, the tool
will not operate until the battery pack has
been charged (or replaced with a fresh
unit), even if the trigger is depressed.
Indicator
Flashing
NOTE:
• All 3 bars on the battery indication
lamp will flash when the automatic
power-off function is activated.
• When the battery indication lamp
begins flashing, the battery pack
should be charged (or replaced with
a fresh unit) immediately.
• Be sure to fully charge the battery
pack in question after activation of
the automatic power-off function.
Failure to do so may prevent the
automatic power-off function from
being properly deactivated.
Battery status
- 17 -
(3) The torque control function
• The torque control function calculates
the load from the motor's rotational
angle during the hammer impact and
determines that the bolt has been prop-
erly seated when a preset load value
is exceeded. Driving is then automati-
cally stopped after a preset number of
impacts have been delivered to the bolt.
CAUTION:
• Always check the tool's tightening
torque before use. Improper tool
operation may result in excessive or
inadequate tightening.
• Always operate the tool with the
switch fully engaged. The torque
control function will not operate
when the switch is not sufficiently
engaged, preventing the tool from
stopping automatically.
• In work where a heavy load comes
to bear during tightening, the load
may be interpreted as the seating
of the bolt, preventing the bolt from
being completely tightened.
• Repeated tightening of the same
bolt may break the bolt or deform
the material into which the bolt is
being driven as a result of exces-
sive tightening.
• The tightening torque value and pre-
cision vary with factors such as the
material into which the bolt is being
driven and the condition of the socket
being used. Adjust the torque as nec-
essary for the work being performed.
Bolt tightening torque varies due to
the factors described below.
1) Bolt
• Bolt diameter: Tightening torque gener-
ally increases with bolt diameter.
• Torque coefficient (indicated by the
bolt manufacturer), grade, length, etc.
2) Other
• Bit and socket condition: Material,
amount of play, etc.
• Use of a universal joint or socket adapter
• User: Manner in which the tool is
applied to the bolt, strength with
which the tool is held, manner in
which the tool's switch is engaged
• Condition of object being tightened:
Material, seating surface finish
EN