Hitachi Koki WH 12DM2 Instrucciones De Manejo página 8

English
PRECAUTIONS FOR CORDLESS IMPACT
WRENCH
1. This is a portable tool for tightening and loosening
bolts and nuts. Use it only for these operation.
2. Use the earplugs if using for a long time.
3. One-hand operation is extremely dangerous; hold
the unit firmly with both hands when operating.
4. Check that the socket is not cracked or broken.
Broken or cracked sockets are dangerous. Check
the socket before using it.
5. Secure the socket with the socket pin and the ring.
If the socket pin or ring securing the socket is
damaged, the socket may come off from the impact
wrench, which is quite dangerous. Do not use
socket pins or rings that are deformed, worn out,
cracked, or in any other way damaged. Always
make sure to install the socket pin and ring in
the correct position.
6. Check the tightening torque.
The appropriate torque for tightening a bolt
depends on the material the bolt is made of, its
dimensions, grade, etc.
Also, the tightening torque generated by this
impact wrench depends on the materials and
dimensions of the bolt, how long the impact
wrench is applied for the way in which the socket
is installed, etc.
Also the torque when the battery has just been
charged and when it is about to run out are
slightly different. Use a torque wrench to check
that the bolt has been tightened with the
appropriate torque.
7. Stop the impact wrench before switching the
direction of rotation. Always release the switch
and wait for impact wrench to stop before
switching the direction of rotation.
8. Never touch the turning part.
Do not allow the turning socket section to get near
your hands or any other part of your body. You
could be cut or caught in the socket. Also, be
careful not to touch the socket after using
continuously it for a long time. It gets quite hot
and could burn you.
9. Never let the impact wrench turn without a load
SPECIFICATIONS
POWER TOOL
Model
No-load speed
Capacity
Tightening torque
Rechargeable battery
Weight
7
WH12DM2
M4 – M8 (Small screw)
M5 – M12 (Ordinary bolt)
M5 – M10 (High tension bolt)
Maximum 120 N·m
{1220 kgf·cm}
Tightening is M14 high tension bolt
(strength grade 12.9), when fulley
charged at 20°C temp.
Tightening time: 3 sec.
EB1220BL: Ni-Cd battery, 12 V (2.0 Ah 10 cells)
EB1230HL: Ni-MH battery, 12 V (3.0 Ah 10 cells)
when using the universal joint.
If the socket turns without being connected to a
load, the universal joint causes the socket to turn
wildly.
You could get hurt or the movement of the socket
could shake the impact wrench so much as to
make you drop it.
10. Always charge the battery at a temperature of 0
– 40°C.
A temperature of less than 0°C will result in over
charging which is dangerous. The battery cannot
be charged at a temperature greater than 40°C.
The most suitable temperature for charging is
that of 20 – 25°C.
11. Do not use the charger continuously.
When one charging is completed, leave the charger
for about 15 minutes before the next charging of
battery.
12. Do not allow foreign matter to enter the hole for
connecting the rechargeable battery.
13. Never disassemble the rechargeable battery and
charger.
14. Never short-circuit the rechargeable battery.
Short-circuiting the battery will cause a great
electric current and overheat. It results in burn
or damage to the battery.
15. Do not dispose of the battery in fire.
If the battery burnt, it may explode.
16. Do not insert object into the air ventilation slots
of the charger.
Inserting metal objects or inflammables into the
charger air ventilation slots will result in electrical
shock hazard or damaged charger.
17. Bring the battery to the shop from which it was
purchased as soon as the post-harging battery life
becomes too short for practical use. Do not dispose
of the exhausted battery.
18. Using an exhausted battery wil damage the
charger.
MODEL
WH12DM2: with charger and case
WR12DM2: with charger and case
0 – 2600 min –1 (/min)
M6 – M16 (Ordinary bolt)
M6 – M12 (High tension bolt)
Tightening is M16(F10T), when fulley
charged at 20°C temp.
Tightening time: 3 sec.
1.6 kg
WR12DM2
Maximum 165 N·m
{1685 kgf·cm}