Panasonic EY4640 - Manual (Page 13)

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Indicator lamp for On lock
warning lamp function
The grinder will not start when the
switch is at the ON position (switch
lever at ON), even when the battery
pack is inserted. The warning lamp
will flash at this time to indicate that
the on lock start prevention function
has operated.
Press the switch to the OFF position
(switch lever at OFF) and then press
it back to the ON position (switch
lever at ON) to start the grinder.
Overheat warning lamp
The overheating protection feature
halts operation to protect the battery
pack in the event of overheating. The
overheat warning lamp on the control
panel flashes when this feature is ac-
tive.
• If the overheating protection feature
activates, allow the tool to cool thor-
oughly (at least 30 minutes). The
battery is ready for use when the
overheat warning lamp goes out.
• Avoid using the tool in a way that
causes the overheating protection
feature to activate repeatedly.
Battery low warning lamp
Exce ssive (complete) discharging of
lithium ion batteries shortens their ser-
vice life dramatically. The tool includes
a battery protection feature designed to
prevent excessiv
e discharging of the
battery pack.
• The battery protection feature acti-
vates immediately before the battery
loses its charge, causing the battery
low warning lamp to flash.
• If you notice the battery low warning
lamp flashing, charge the battery
pack immediately.
Off
(normal
operation)
Flashing
(No charge)
Battery protection
feature active
Off
(normal
operation)
Flashing: Overheat
Indicates operation has
been halted due to battery
overheating.
ON OFF