Drilling And Driving-In Operations For Anchors - Hitachi DH 38MS Instrucciones De Manejo

HOW TO USE THE ROTARY HAMMER
NOTE
Ensure that the wing bolt in the side handle is properly
tightened before using the tool.
1. How to drill holes (Fig. 3)
(1) Pull the switch trigger after applying the drill bit tip to the
drilling position.
(2) It is unnecessary to forcibly press the rotary hammer
main body. It is suffi cient to slightly press the
rotary hammer to an extent that shavings are freely
discharged.
CAUTION
Although this machine is equipped with a safety clutch,
if the drill bit becomes bound in concrete or other
material, the resultant stoppage of the drill bit could
cause the machine body to turn in reaction. Ensure
that the main handle and side handle are gripped fi rmly
during operation.
2. How to chisel or demolish (Fig. 4)
By applying the tool tip to the chiseling or demolishing
position, operate the rotary hammer by utilizing its
empty weight.
Forcible pressing or thrusting is unnecessary.
3. When drilling at "rotation + hammering":
CAUTION
If you switch the selector lever during motor rotation, the
tool can start to rotate abruptly, resulting in unexpected
accidents. Be sure to switch the selector lever when the
motor is at a complete stop.
(1) Switching to "rotation + hammering"
(a) Push the button, release lock and turn the selector
lever clockwise.
(b) Align ▲ of the selector lever and
holder as illustrated in Fig. 5.
(c) Release the button to lock the selector lever.
NOTE
Turn the selector lever (do not push the button) to check
if it is completely locked and make sure that it does not
turn.
4. When demolishing and chiseling at "hammering":
CAUTION
○ If the selector lever is switched during motor rotation, the
tool can start to rotate abruptly, resulting in unexpected
accidents. Make sure to switch the selector lever when
the motor is at a complete stop.
○ If the bull point or cold chisel is used at the position
of "rotation + hammering", the tool can start to rotate,
resulting in unexpected accidents. Make sure that they
are used at the position of "hammering".
(1) Switching to "hammering"
(a) Push the button, release lock and turn the selector
lever counterclockwise.
(b) Align ▲ of the selector lever and
holder as illustrated in Fig. 6.
(c) Release the button to lock the selector lever.
NOTE
Turn the selector lever (do not push the button) to check
if it is completely locked and make sure that it does not
turn.
(2) When fi xing working positions of tools such as cold
chisel, etc.,
(a) Push the button, release lock and turn the selector
lever.
Align ▲ of the selector lever and ◎ of the lever
holder as illustrated in Fig. 7.
(b) Release the button to lock the selector lever.
(c) Turn the grip as illustrated in Fig. 8 and fi x the tool to
the desired working direction.
(d) Switch the selector lever to "hammering" according
to the procedures mentioned in the above item (1)
and secure the position of the tool.
5. Warming up (Fig. 9)
The grease lubrication system in this unit may require
warming up in cold regions.
Position the end of the bit so makes contact with the
concrete, turn on the switch and perform the warming
up operation. Make sure that a hitting sound is produced
and then use the unit.
CAUTION
When the warming up operation is performed, hold
the side handle and the main body securely with both
hands to maintain a secure grip and be careful not to
twist your body by the jammed drill bit.
DRILLING AND DRIVING-IN OPERATIONS FOR
ANCHORS
1. When a taper shank adapter is used. (Fig. 10)
(1) Install drill bit with taper shank in the taper shank
adapter.
(2) Turn the power on and drill a base hole to the depth
sounded by indicating groove on the drill bit.
(3) After cleaning out dust with a syringe, attach the plug
to the anchor tip and drive in the anchor with a manual
hammer.
(4) To remove the drill bit (taper shank), insert the cotter
into the slot of the taper shank adapter and strike the
head of the cotter with a manual hammer supporting on
a rest. (Fig. 11)
USING DRILL CHUCK, CHUCK ADAPTER
of the lever
Note that this machine can be used at "rotation only" if
separately sold parts such as drill chuck and chuck adapter
are attached. Use it with the selector lever positioned at
"rotation + hammering".
CAUTION
During operation, be sure to grip the handle and the
side handle fi rmly to prevent your body from swaying.
(1) Switching to "rotation + hammering"
For switching to "rotation + hammering", follow the same
procedures mentioned in [3. When drilling at "rotation +
hammering"].
(2) Attaching chuck adapter to drill chuck (Fig. 12)
(a) Attach the chuck adapter to the drill chuck.
(b) The SDS max shank of the chuck adapter is
equivalent to the drill bit. Therefore, follow the same
procedure as [How to install tool] for attaching and
detaching.
(3) Drilling
(a) Even if you apply more-than-required pressure to
of the lever
the machine body, drilling can never be performed
as quickly as you expect. Applying more force or
pressure to the machine body than what is needed,
on the contrary, damages the drill tip, resulting in
the declined working effi ciency and shortened life
of this machine.
(b) A drill can snap sometimes when drilling is almost
fi nished. It is important to relax your thrusting
pressure when drilling is nearing the end.
HOW TO HANDLE A CORE BIT
When a core bit is used, large diameter holes and blind
holes can be drilled. In this case, use optional accessories
for core bits (such as a center pin and core bit shank) for
more effi cient operation.
English
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