Functional Description - Makita HR4501C Instruction Manual

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)
FOR MODEL HR4511C
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. Release
the switch trigger to stop.
FOR MODELS HR4510C/ HR4501C
Trigger switch
CAUTION:
• Before plugging in the tool, always check to see that
the switch trigger actuates properly and returns to the
"OFF" position when released.
• This switch functions when setting the tool in
and symbol modes.
To start the tool, simply pull the switch trigger. Release
the switch trigger to stop.
Slide switch
CAUTION:
• Before plugging in the tool, always check to see that
the tool is switched off.
• This switch functions only when setting the tool in
symbol action mode.
When using the tool in the hammering mode for a long
time, the slide switch is available. To start the tool, push
the "I (ON)" side of the switch lever. To stop the tool, push
the "O (OFF)" side of the switch lever. (Fig. 2)
Speed change (Fig. 3)
The revolutions and blows per minute can be adjusted just
by turning the adjusting dial. The dial is marked 1 (lowest
speed) to 5 (full speed).
Refer to the table below for the relationship between the
number settings on the adjusting dial and the revolutions/
blows per minute.
Number on Revolutions per
adjusting dial
5
4
3
2
1
CAUTION:
• If the tool is operated continuously at low speeds for a
long time, the motor will get overloaded, resulting in
tool malfunction.
6
Blows per minute
minute
280 2,750
260 2,550
200 1,950
150 1,450
130 1,250
• The speed adjusting dial can be turned only as far as 5
and back to 1. Do not force it past 5 or 1, or the speed
adjusting function may no longer work.
Selecting the action mode
Rotation with hammering (Fig. 4 & 5)
For drilling in concrete, masonry, etc., depress the lock
button and rotate the change lever so that the pointer
points to the
bit.
Hammering only
FOR MODEL HR4501C AND HR4510 (Fig. 6)
For chipping, scaling or demolition operations, depress
the lock button and rotate the change lever so that the
pointer points to the
chisel, scaling chisel, etc.
For long time hammering (FOR MODELS HR4501C
AND HR4510C ONLY) (Fig. 7)
For chipping, scaling or demolition operations, depress
the lock button and rotate the change lever so that the
pointer points to the
chisel, scaling chisel, etc.
CAUTION:
• When using the tool in the
trigger does not work and only the slide switch works.
FOR MODEL HR4511C (Fig. 8)
symbol
For chipping, scaling or demolition operations, depress
the lock button and rotate the change lever so that the
pointer points to the
chisel, scaling chisel, etc.
CAUTION:
• Do not rotate the change lever 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 change lever is always positively
located in one of the two or three action mode
positions.
Torque limiter
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.
Indicator lamp (Fig. 9)
The green power-ON indicator lamp lights up when the
tool is plugged. If the indicator lamp does not light up, the
mains cord or the controller may be defective. The
indicator lamp is lit but the tool does not start even if the
tool is switched on, the carbon brushes may be worn out,
or the controller, the motor or the ON/OFF switch may be
defective.
The red service indicator lamp lights up when the carbon
brushes are nearly worn out to indicate that the tool needs
servicing. After approx. 8 hours of use, the motor will
automatically be shut off.
symbol. Use a tungsten-carbide tipped
symbol. Use a bull point, cold
symbol. Use a bull point, cold
symbol mode, the switch
symbol. Use a bull point, cold