DeWalt dc900 Instruction Manual page 30

E N G L I S H
Charging the battery pack (fi g. A & B)
Always check the mains prior to charging the
battery pack. If the mains is functioning but the
battery pack does not charge, take your charger to
an authorized D WALT repair agent. Whilst
E
charging, the charger and the battery pack may
become warm to touch. This is a normal condition
and does not indicate a problem.
@
Do not charge the battery pack at
ambient temperatures < 4 °C or > 40 °C.
Recommended charging temperature:
approx. 24 °C.
● To charge the battery pack (10), insert it into the
charger (12) as shown and plug in the charger.
Be sure that the battery pack is fully seated in
the charger. The red charging indicators (13)
will blink according to the state of charge of the
battery pack.
● When fi nished charging, the indicators are all
on. The charger automatically switches to
equalise mode.
● The battery pack can be removed at any time or
left in the connected charger indefi nitely.
● The red charging indicators fl ash rapidly to
indicate a charging problem. Reinsert the
battery pack or try a new one. If the new pack
also refuses to charge, have your charger
tested by an authorized D
● The red charging indicators fl ash rapidly with
one short blink followed by a long blink to
indicate a problem with the charger. Return the
charger to an authorized D
● When plugged into power sources such as
generators or sources that convert DC to AC,
the red charging indicators (13) may fl ash
together with two fast blinks followed by a
pause. This indicates a temporary problem of
the power source. The charger will
automatically switch back to normal operation.
Charging process (fi g. B)
Refer the table below for the state of charge of the
battery pack.
30
WALT repair agent.
E
WALT repair agent.
E
State of charge
1 light blinkling
1 light blinkling, 1 light on
1 light blinkling, 2 lights on
3 lights on
Automatic refresh
@
The automatic refresh mode will
equalize or balance the individual
cells in the battery pack at its peak
capacity. Battery packs should be
refreshed weekly or whenever the
pack no longer delivers the same
amount of work.
● To refresh your battery pack, place the battery
in the charger as usual. Leave the battery pack
for at least 8 hours in the charger.
Hot/Cold Pack Delay
When the charger detects a battery that is too hot
or too cold, it automatically starts a Hot/Cold Pack
Delay, suspending charging until the battery has
reached an appropriate temperature. The charger
then automatically switches to the pack charging
mode. This feature ensures maximum battery life.
Deep discharge protection
The battery pack is protected against deep
discharging when it is used in the tool.
Inserting and removing bits (fi g. A & C)
● Open the chuck by turning the sleeve (15)
counterclockwise and insert the bit shank.
● Place the bit in the chuck as far as it will go and
lift slightly before tightening.
● Tighten fi rmly by turning the sleeve clockwise.
● To remove the bit, proceed in reverse order.
Selecting the operating mode (fi g. D)
The tool can be used in the following operating
modes:
- Screwdriving
- Rotary drilling: for steel, wood and plastics
- Percussion drilling: for masonry
< 33%
33-66%
66-99%
100%