Makita HR3000C Manual De Instrucciones página 7

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 trigger. Release the trig-
ger to stop.
Speed change (Fig. 2)
The revolutions and blows per minute can be adjusted
just by turning the adjusting dial. The dial is marked 1
(lowest speed) to 6 (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 minute
6 720
5 690
4 590
3 490
2 390
1 360
Selecting action mode (Fig. 3)
When selecting an action mode, first set the change lever
and the shift lever to the position shown in Fig. 3. Then
proceed as follows.
Rotation with hammering (Fig. 4)
For drilling in concrete, masonry, etc., depress the lock
button and rotate the change lever so that the pointer
points to the H symbol. Use a tungsten- carbide tipped
bit.
Rotation only (Fig. 5)
For drilling in wood, metal or plastic materials, rotate the
shift lever so that the pointer points to the m symbol. Use
a twist drill bit or wood bit.
Hammering only (Fig. 6 & 7)
For chipping, scaling or demolition operations, depress
the lock button and rotate the change lever so that the
pointer points to the g symbol. Use a bull point, cold
chisel, scaling chisel, etc.
CAUTION:
• Do not rotate the change lever and/or the shift 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 and/or the shift lever is
always positively located in one of the three action
mode positions.
All manuals and user guides at all-guides.com
Blows per
minute
3,300
3,150
2,700
2,250
1,800
1,650
• The action mode cannot be changed directly from
"hammering only" to "rotation only" or from "rotation
only" to "hammering only". First set the change lever
and the shift lever to "rotation with hammering" mode
position shown in Fig. 7. Then set them to the position
for "hammering only" or "rotation only".
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. 8)
The green power-ON indicator lamp lights up when the
tool is switched ON. If the indicator lamp is lit but the tool
does not start, the carbon brushes may be worn out, or
the electric circuit or the motor may be defective. If the
indicator lamp does not light up and the tool does not
start, the ON/OFF switch or the mains cord 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.
ASSEMBLY
CAUTION:
• Always be sure that the tool is switched off and
unplugged before carrying out any work on the tool.
Side grip (Fig. 9)
CAUTION:
• Always use the side grip to ensure operating safety
when drilling in concrete, masonry, etc.
• When the bit begins to break through concrete or if the
bit strikes reinforcing rods embedded in concrete, the
tool may react dangerously. Maintain good balance and
safe footing while holding the tool firmly with both
hands to prevent dangerous reaction.
The side grip swings around to either side, allowing easy
handling of the tool in any position. Loosen the side grip
by turning it counterclockwise, swing it to the desired
position and then tighten it by turning clockwise.
Installing or removing the bit
Clean the bit shank and apply the bit grease provided to
it before installing the bit. (Fig. 10)
Insert the bit into the tool. Turn the bit and push it in until
it engages. (Fig. 11)
If the bit cannot be pushed in, remove the bit. Pull the
chuck cover down a couple of times. Then insert the bit
again. Turn the bit and push it in until it engages.
After installing, always make sure that the bit is securely
held in place by trying to pull it out.
To remove the bit, pull the chuck cover down all the way
and pull the bit out. (Fig. 12)
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