Makita DVR340 Instruction Manual page 5

FUNCTIONAL
DESCRIPTION
CAUTION:
• Always be sure that the tool is switched off and
the battery cartridge is removed before adjust-
ing or checking function on the tool.
Installing or removing battery cartridge
► Fig.1: 1. Recessed part in the battery cartridge
cover 2. Battery cartridge cover
► Fig.2: 1. Red part 2. Button 3. Battery cartridge 4. Cover
• Always switch off the tool before insertion or
removal of the battery cartridge.
• To remove the battery cartridge, first open the
battery cartridge cover. To open the cover, press
its recessed part and pivot it with the recessed part
depressed. And then withdraw it from the tool while
sliding the button on the front of the cartridge.
• To insert the battery cartridge, align the tongue on the
battery cartridge with the groove in the housing and
slip it into place. Always insert it all the way until it
locks in place with a little click. If you can see the red
part on the upper side of the button, it is not locked
completely. Insert it fully until the red part cannot be
seen. If not, it may accidentally fall out of the tool,
causing injury to you or someone around you.
• Do not use force when inserting the battery car-
tridge. If the cartridge does not slide in easily, it is
not being inserted correctly.
Indicating the remaining battery
capacity
Only for battery cartridges with the indicator
► Fig.3: 1. Indicator lamps 2. Check button
Press the check button on the battery cartridge to indi-
cate the remaining battery capacity. The indicator lamps
light up for few seconds.
Indicator lamps
Lighted Off
Remaining
capacity
Blinking
75% to 100%
50% to 75%
25% to 50%
0% to 25%
Charge the
battery.
The battery
may have
malfunctioned.
NOTE: Depending on the conditions of use and the
ambient temperature, the indication may differ slightly
from the actual capacity.
Switch action
► Fig.4: 1. Switch lever
CAUTION:
• Before inserting the battery cartridge into the
tool, always check to see that the switch lever
actuates properly and returns to the "OFF"
position when released.
To start the tool, simply pull the switch lever. Release
the switch lever to stop.
Switch lever can be pulled from either top or back side
of the tool.
OPERATION
Hold the tool straight when inserting/operating. Use
the tool within the effective vibrations range at equidis-
tant intervals. The effective air bubble removal range
is about ten times diameter of the vibrating head, or
around 250 mm.
Do not use this tool to move concrete within a form.
The mortar will just move away and the coarse aggre-
gate will remain, causing segregation.
► Fig.5
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.
NOTE:
• Vibrating too long in a single place causes
concrete segregation.
• When the coarse aggregates segregates when
placing concrete, shovel out the coarse aggre-
gate 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 effec-
tive removal of air bubbles. Conversely, if the pouring
is done first from above, the mortar will separate and
eventually slide to the bottom.
5 ENGLISH