Battery Level Indicator; Charging Battery Pack; Changing Accessories - Dremel 8240 Original Instructions Manual

• Permitted ambient temperatures (tool/
charger/battery):
– when charging 0...+45ºC
– during operation -20...+50ºC
– during storage -20...+50ºC

BATTERY LEVEL INDICATOR

3 of 3 solid green lights = 67-100%
2 of 3 solid green lights = 34-66%
1 of 3 solid green lights = 16-33%
1 of 3 flashing green lights = 0-15%
Your tool is equipped with advanced
electronics that protect the Li-Ion cells in
the battery from damage due to excessive
operating temperature and/or current draw.
If the lights illuminate red and/or the tool
stops working during heavy use, this most
likely indicates that the Li-Ion cells are
near their maximum operating temperature,
and the battery pack should either be
changed or allowed to cool to ambient
temperature before continuing use. If the
tool automatically turns off due to overload
conditions, the switch must be turned off for
a few seconds to allow the circuit to reset
before continuing use.

CHARGING BATTERY PACK

1. Plug charger cord into your standard
power outlet. With no battery pack
inserted, the charger's green indicator
light will go ON. This indicates the
charger is receiving power and the
charger is ready for operation.
2. To remove the battery pack from the tool
press both battery release tabs and pull
the battery from the tool.
3. When you insert the battery pack
into the charger, the charger's green
indicator light will begin to "BLINK". This
indicates that the battery is receiving a
fast charge.
4. When the indicator light stops
"BLINKING" (and becomes a steady
green light) fast charging is complete.
The battery pack is fully charged and
can be removed from the charger. The
light will stop blinking in less time if
the battery pack was not completely
discharged.
5. When you begin the charging process
of the battery pack, a steady green light
could also mean the battery pack is too
hot or too cold. Fast charging is only
7
possible when the temperature range
of the battery pack is between 0°C
and 45°C. As soon as the battery pack
reaches the correct temperature range,
the battery charger will automatically
switch to fast charging.
6. The battery pack may be used even
though the light may still be blinking.
The light may require more time to stop
blinking depending on temperature.
7. A substantial drop in operating time per
charge may mean that the battery pack
is nearing the end of its life and should
be replaced.
8. Remember to unplug charger during
storage period.
ALWAYS TURN OFF THE TOOL BEFORE

CHANGING ACCESSORIES

Use only Dremel tested accessories. Be
sure to read the instructions supplied
with your Dremel accessory for further
information on its use. Handle and store
accessories carefully to avoid chipping
and cracking.
CHANGING ACCESSORIES
A. Collet nut
B. Collet (3.2 mm)
C. Nose cap (EZ Twist integrated wrench*)
D. Dremel chuck 4486*
E. Shaft lock button
F. Wrench
*) not standard included
1. Press the shaft lock button and rotate
the shaft by hand until it engages the
shaft lock. Do not engage the shaft
lock while the tool is running.
2. With the shaft lock engaged, loosen (do
not remove) the collet nut. Use the collet
wrench if necessary.
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ACCESSORIES
9