Makita VR251D Betriebsanleitung Seite 5

CAUTION:
• The fast charger Model DC1411 is for charging Makita battery cartridge. Never use it for other purposes or
for other manufacturer's batteries.
• When you charge a new battery cartridge or a battery cartridge which has not been used for a long period of
time, it may not accept a full charge. This is a normal condition and does not indicate a problem. You can
recharge the battery cartridge fully after discharging it completely and recharging a couple of times.
• If you charge a battery cartridge from a just-operated tool or a battery cartridge which has been left in a
location exposed to direct sunlight or heat for a long time, the charging light may flash in red color. If this
occurs, wait for a while. Charging will begin after the battery cartridge cools. The battery cartridge will cool
faster if you remove the battery cartridge from the fast charger.
• If the charging light flashes alternately in green and red color, a problem exists and charging is not possible.
The terminals on the charger or battery cartridge are clogged with dust or the battery cartridge is worn out or
damaged.
• If you wish to charge two battery cartridges, allow 15 minutes between chargings on the fast charger.
Trickle charge (Maintenance charge)
If you leave the battery cartridge in the charger to prevent spontaneous discharging after full charge, the
charger will switch into its ''trickle charge (maintenance charge)'' mode and keep the battery cartridge fresh and
fully charged.
Tips for maintaining maximum battery life
1. Charge the battery cartridge before completely discharged.
Always stop tool operation and charge the battery cartridge when you notice less tool power.
2. Never recharge a fully charged battery cartridge.
Overcharging shortens the battery service life.
3. Charge the battery cartridge with room temperature at 10°C – 40°C (50°F – 104°F).
Let a hot battery cartridge cool down before charging it.
4. Charge the Nickel Metal Hydride battery cartridge when you do not use it for more than six months.
Switch action (Fig. 3)
CAUTION:
Before inserting the battery cartridge into the tool,
always check to see that the switch trigger actuates
properly and returns to the ''OFF'' position when
released.
To start the tool, simply pull the trigger. Release the
trigger to stop.
Operation (Fig. 4)
Hold the tool straight when inserting/operating. Use
the tool within the effective vibration range at equidis-
tant intervals. The effective air bubble removal range
is about ten times the diameter of the vibrating head,
or around 250 mm with this tool.
Do not use this tool to move concrete within a form.
The mortar will just move away and the coarse
aggregate will remain, causing segregation.
Effective leveling and removal of air bubbles
Removal of the air bubbles is complete after you have
worked the tool throughout each effective range, the
concrete stops shrinking, and the mortar has risen
evenly to the surface, giving off a light appearance.
Gently remove the operating tool not to leave holes.
All manuals and user guides at all-guides.com
NOTE:
• Vibrating too long in a single place causes concrete
segregation.
• When the coarse aggregate segregates when plac-
ing concrete, shovel out the coarse aggregate and
put it where there is plenty of mortar. Then use the
tool on it. Don't leave coarse aggregate in the
segregated condition.
When concreting a slope site, always pour from the
bottom at the beginning. This way the weight of the
freshly poured concrete and vibration will lead to
effective removal of air bubbles. (Fig. 5)
Conversely, if the pouring is done first from above, the
mortar will separate and eventually slide to the bot-
tom.
MAINTENANCE
CAUTION:
Always be sure that the tool is switched off and the
battery cartridge is removed before carrying out any
work on the tool.
To maintain product safety and reliability, repairs,
maintenance or adjustment should be carried out by
Makita Authorized Service Center.
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