DeWalt DC390 Guide D'utilisation page 11

• NEVER attempt to connect two chargers together.
• The charger is designed to operate on standard 120 volt
household electrical power. Do not attempt to use it on any
other voltage. This does not apply to the vehicular charger.
Using Automatic Tune-Up™ Mode
The automatic Tune-Up™ Mode equalizes or balances the
individual cells in the battery pack allowing it to function at peak
capacity. Battery packs should be tuned up weekly or after
10 charge/discharge cycles or whenever the pack no longer delivers
the same amount of work. To use the automatic Tune-Up™, place
the battery pack in the charger and leave it for at least 8 hours. The
charger will cycle through the following modes.
1. The red light will blink continuously indicating that the 1-hour
charge cycle has started.
2. When the 1-hour charge cycle is complete, the light will stay on
continuously and will no longer blink. This indicates that the pack
is fully charged and can be used at this time.
3. If the pack is left in the charger after the initial 1-hour charge, the
charger will begin the Automatic Tune-Up™ mode. This mode
continues up to 8 hours or until the individual cells in the battery
pack are equalized. The battery pack is ready for use and can be
removed at any time during the Automatic Tune-Up™ mode.
4. Once the Automatic Tune-Up™ mode is complete, the charger will
begin a maintenance charge; the red indicator will remain lit.
Chargers
Your tool uses a D WALT charger. Be sure to read all safety instructions
E
before using your charger. Consult the chart at the end of this manual
for compatibility of chargers and battery packs.
FIG. 1
15 MINUTE CHARGER
Charging Procedure (Fig. 1)
DANGER: Electrocution hazard. 120 volts are present at charging
terminals. Do not probe with conductive objects. Electric shock or
electrocution may result.
1. Plug the charger into an appropriate outlet before inserting battery
pack.
2. Insert the battery pack into the charger, as shown in Figure 1,
making sure the pack is fully seated in charger. The red (charging)
light will blink continuously indicating that the charging process
has started.
3. The completion of charge will be indicated by the red light
remaining on continuously. The pack is fully charged and may be
used at this time or left in the charger.
Indicator Light Operation
9
1 HOUR CHARGER