Makita DHR280, Instruction Manual

Page: 23 / 186

23 ENGLISH
Drilling in wood or metal
CAUTION:
Hold the tool firmly and exert care
when the drill bit begins to break through the
workpiece.
There is a tremendous force exerted on
the tool/drill bit at the time of hole break through.
CAUTION:
A stuck drill bit can be removed
simply by setting the reversing switch to reverse
rotation in order to back out. However, the tool
may back out abruptly if you do not hold it firmly.
CAUTION:
Always secure workpieces in a
vise or similar hold-down device.
NOTICE:
Never use “rotation with hammering” when the
drill chuck is installed on the tool. The drill chuck may be
damaged.
Also, the drill chuck will come off when reversing the tool.
NOTICE:
Pressing excessively on the tool will not speed
up the drilling. In fact, this excessive pressure will only serve
to damage the tip of your drill bit, decrease the tool
performance and shorten the service life of the tool.
Set the action mode changing knob to the symbol.
For DHR280/DHR282
Optional accessory
Attach the chuck adapter to a keyless drill chuck to which 1/2"-
20 size screw can be installed, and then install them to the tool.
When installing it, refer to the section “Installing or removing drill
bit”.
►
Fig.33: 1. Keyless drill chuck 2. Chuck adapter
For DHR281/DHR283
Use the quick change drill chuck as standard equipment. When
installing it, refer to "changing the quick change chuck for SDS-
plus".
Hold the ring and turn the sleeve counterclockwise to open the
chuck jaws. Place the bit in the chuck as far as it will go. Hold
the ring firmly and turn the sleeve clockwise to tighten the chuck.
►
Fig.34: 1. Sleeve 2. Ring
To remove the bit, hold the ring and turn the sleeve
counterclockwise.
Diamond core drilling
NOTICE:
If performing diamond core drilling operations
using “rotation with hammering” action, the diamond core
bit may be damaged.
When performing diamond core drilling operations, always set
the change lever to the position to use "rotation only" action.
Beating dust on the filter
Optional accessory
CAUTION:
Do not turn the dial on the dust
case while the dust case is removed from the
dust collection system.
Doing so may cause dust
inhalation.
CAUTION:
Always switch off the tool when
turning the dial on the dust case. Turning the dial
while the tool is running may result in the loss of
control of the tool.
By beating the dust on the filter inside the
dust case, you can keep the vacuum
efficiency and also reduce the number of
times to dispose of the dust. Turn the dial
on the dust case three times after
collecting every 50,000 mm
3
of dust or
when you feel the vacuum performance
declined.
NOTE: 50,000 mm 3 of dust equivalents to
drilling 10 holes of ø10 mm and 65 mm
depth (14 holes of ø3/8″ and 2″ depth).
►
Fig.35: 1. Dust case 2. Dial
Disposing of dust
Optional accessory
CAUTION:
Always be sure that the tool is
switched off and the battery cartridge is removed
before carrying out any work on the tool.
CAUTION:
Be sure to wear dust mask when
disposing of dust.
CAUTION:
Empty the dust case regularly
before the dust case becomes full. Failure to do so
may decrease the dust collection performance and
cause dust inhalation.
CAUTION:
The performance of dust collection
decreases if the filter in the dust case become
clogged. Replace the filter with new one after
approximately 200 times of dust fulfillment as a
guide.
Failure to do so may cause dust inhalation.
1. Remove the dust case while pressing
down the lever of the dust case. ►
Fig.36: 1. Lever
2.
Open the cover of the dust case. ►
Fig.37: 1. Cover
3. Dispose of the dust, and then clean
the filter.
►
Fig.38
NOTICE:
When cleaning the filter, do
not touch the filter with brush or similar,
or blow compressed air on the filter. It
may damage the filter.