Makita DHR280, Instruction Manual

Page: 20 / 186

20 ENGLISH
Removing the quick change chuck for
SDS-plus
CAUTION:
Before removing the quick change
chuck for SDS-plus, be sure to remove the bit.
Grasp the change cover of the quick change chuck for SDS-
plus and turn in the direction of the arrow until the change
cover line moves from the symbol to the symbol. Pull
forcefully in the direction of the arrow.
►
Fig.7: 1. Quick change chuck for SDS-plus
2. Change cover 3. Change cover line
Installing the quick change drill chuck
Check the line of the quick change drill chuck shows the
symbol. Grasp the change cover of the quick change drill
chuck and set the line to the symbol. Place the quick change
drill chuck on the spindle of the tool. Grasp the change cover
of the quick change drill chuck and turn the change cover line
to the
s
ymbol until a click can clearly be heard. ►
Fig.8:
1. Quick change drill chuck 2. Spindle
3. Change cover line 4. Change cover
Selecting the action mode
NOTICE:
Do not rotate the action mode changing knob
when the tool is running. The tool will be damaged.
NOTICE:
To avoid rapid wear on the mode change
mechanism, be sure that the action mode changing knob
is always positively located in one of the three action
mode positions.
Rotation with hammering
For drilling in concrete, masonry, etc., rotate the action mode
changing knob to the symbol. Use a tungstencarbide tipped
bit (optional accessory).
►
Fig.9: 1. Rotation with hammering 2. Action mode changing
knob
Rotation only
For drilling in wood, metal or plastic materials, rotate the action
mode changing knob to the symbol. Use a twist drill bit or
wood drill bit. ►
Fig.10: 1. Rotation only
Hammering only
For chipping, scaling or demolition operations, rotate the action
mode changing knob to the symbol. Use a bull point, cold
chisel, scaling chisel, etc. ►
Fig.11: 1. Hammering only
Hook
CAUTION:
Never hook the tool at high
location or on potentially unstable surface.
►
Fig.12: 1. Hook
The hook is convenient for temporarily
hanging the tool. To use the hook, simply lift
up hook until it snaps into the open position.
When not in use, always lower hook until it
snaps into the closed position.
Adjusting the nozzle position
of the dust collection system
Optional accessory
Push in the guide while pushing up the guide
adjustment button, and then release the
button at the desired position.
►
Fig.13: 1. Guide 2. Guide adjustment
button
NOTE: Before adjusting the nozzle position,
release the nozzle forward completely by
pushing up the guide adjustment button.
If a long drill bit is installed, extend the guide
by pushing up the extension button.
►
Fig.14: 1. Extension button
Adjusting the drilling depth
of the dust collection system
Optional accessory
Slide the depth adjustment button to the
desired position while pushing it up. The
distance (A) is the drilling depth.
►
Fig.15: 1. Depth adjustment button
Torque limiter
NOTICE:
As soon as the torque limiter
actuates, switch off the tool immediately.
This will help prevent premature wear of the
tool.
NOTICE:
Drill bits such as hole saw,
which tend to pinch or catch easily in the
hole, are not appropriate for this tool.
This is because they will cause the torque
limiter to actuate too frequently.
The torque limiter will actuate when a certain
torque level is reached. The motor will
disengage from the output shaft. When this
happens, the drill bit will stop turning.
Electronic function
The tool is equipped with the electronic
functions for easy operation.
•
Constant speed control
The speed control function provides the
constant rotation speed regardless of
load conditions.
•
Active Feedback sensing Technology
(For