Drilling And Driving-In Operations For Anchors - Hitachi Koki DH 45MR Instrucciones De Manejo

English
The scale '1' of the dial is designed for a minimum speed
with the number of 120 rotations per minute and 1250
times of blow per minute. The scale '6' is designed for
a maximum speed with the number of 240 rotations per
minute and 2500 times of blow per minute.
CAUTION
Do not adjust the dial during operation. Doing so can
result in injury because the Rotary Hammer must be
held by only one hand, disabling the steady control of the
Rotary Hammer.
HOW TO USE THE ROTARY HAMMER
1. How to drill holes (Fig. 4)
(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 crush (Fig. 5)
By applying the drill bit tip to the chiseling or crushing
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. 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.
4. When chipping 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. 7.
(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.,
7
(a) Push the button, release lock and turn the selector
lever.
Align ▲ of the selector lever and
as illustrated in Fig. 8.
(b) Release the button to lock the selector lever.
(c) Turn the grip as illustrated in Fig. 9 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. Install the stopper (Fig. 10)
(1) Loosen the side handle and insert the straight portion of
the stopper into the handle bolt hole.
(2) Move the stopper to the specifi ed position and rotate the
grip of the side handle clockwise to fi x the stopper.
6. Warming up (Fig. 11)
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. 12)
(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
of the lever
the slot of the taper shank adapter and strike the head of
the cotter with a manual hammer supporting on a rest.
(Fig. 13)
USING DRILL CHUCK, CHUCK ADAPTER
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. 14)
(a) Attach the chuck adapter to the drill chuck.
(b) The SDS max shank of the chuck adapter is equivalent
of the lever
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
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.
of the lever holder