Functional Description - Makita HR2450 Betriebsanleitung

14. Some material contains chemicals which may be
toxic. Take caution to prevent dust inhalation
and skin contact. Follow material supplier safety
data.
SAVE THESE INSTRUCTIONS.
WARNING:
MISUSE or failure to follow the safety rules stated in
this instruction manual may cause serious personal
injury.

FUNCTIONAL DESCRIPTION

CAUTION:
• Always be sure that the tool is switched off and
unplugged before adjusting or checking function on the
tool.
Switch action (Fig. 1)
CAUTION:
• Before plugging in 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 switch trigger. Tool speed
is increased by increasing pressure on the switch trigger.
Release the switch trigger to stop. For continuous
operation, pull the switch trigger and then push in the
lock button. To stop the tool from the locked position, pull
the switch trigger fully, then release it.
Lighting up the lamps (Fig. 2)
For model HR2450F/HR2450FT
CAUTION:
• Do not look in the light or see the source of light
directly.
To turn on the lamp, pull the trigger. Release the trigger
to turn it off.
NOTE:
• Use a dry cloth to wipe the dirt off the lens of lamp. Be
careful not to scratch the lens of lamp, or it may lower
the illumination.
Reversing switch action (Fig. 3)
For model HR2450/HR2450F/HR2450X/HR2450T/
HR2450FT
This tool has a reversing switch to change the direction of
rotation. Move the reversing switch lever to the
tion (A side) for clockwise rotation or to the
(B side) for counterclockwise rotation.
CAUTION:
• Always check the direction of rotation before operation.
• Use the reversing switch only after the tool comes to a
complete stop. Changing the direction of rotation
before the tool stops may damage the tool.
• When you operate the tool in counterclockwise rotation,
the switch trigger is pulled only halfway and the tool
runs at half speed. For counterclockwise rotation, you
cannot push in the lock button.
6
Changing the quick change chuck for SDS-plus
For model HR2450T/HR2450FT
The quick change chuck for SDS-plus can be easily
exchanged for the quick change drill chuck.
Removing the quick change chuck for SDS-plus
(Fig. 4)
CAUTION:
• Before removing the quick change chuck for SDS-plus,
always 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. Pull forcefully in the direction of the arrow.
Attaching the quick change drill chuck (Fig. 5)
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
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
click can clearly be heard.
Selecting the action mode
Rotation with hammering (Fig. 6)
For drilling in concrete, masonry, etc., depress the lock
button and rotate the action mode changing knob to the
H
symbol. Use a tungsten-carbide tipped bit.
Rotation only (Fig. 7)
For drilling in wood, metal or plastic materials, depress
the lock button and rotate the action mode changing
knob to the m symbol. Use a twist drill bit or wood bit.
Hammering only (Fig. 8)
For chipping, scaling or demolition operations, depress
the lock button and rotate the action mode changing
knob to the
ing chisel, etc.
CAUTION:
• Do not rotate the action mode changing knob when the
tool is running under load. The tool will be damaged.
• 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.
D
posi-
Torque limiter
E
position
The torque limiter will actuate when a certain torque level
is reached. The motor will disengage from the output
shaft. When this happens, the bit will stop turning.
CAUTION:
• As soon as the torque limiter actuates, switch off the
tool immediately. This will help prevent premature wear
of the tool.
• Hole saws cannot be used with this tool. They tend to
pinch or catch easily in the hole. This will cause the
torque limiter to actuate too frequently.
symbol.
symbol. Use a bull point, cold chisel, scal-
symbol to the
symbol until a