Hitachi WH18DBDL-RJ [12/96] English
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Hitachi WH18DBDL-RJ [12/96] English

Hitachi WH18DBDL-RJ [12/96] English
English
11
CAUTION:
䡬
Do not expose directly your eye to the light by looking into the light.
If your eye is continuously exposed to the light, your eye will be hurt.
NOTE:
䡬
To prevent the battery power consumption caused by forgetting to turn off
the LED light, the light goes off automatically in about 15 minutes.
6. Tightening mode selector function (Fig. 12)
CAUTION:
䡬
Do not subject the switch panel to shock or damage.
䡬
Select high/low mode and single/continuous mode while the trigger switch
is released. Failure to do so could result in malfunction.
(1) High/Low selector switch
The rotation speed changes in 4 steps (900, 1400, 2000, 2600/2900 min
-1
)
each time the high/low selector switch is pressed.
(2) Single/Continuous selector switch
The tightening torque can be adjusted according to the work by changing
the tightening mode using the single/continuous selector switch and the
high/low selector switch on the side of the impact driver.
When the forward/reverse button is set to reverse, the high/low mode and
single/continuous mode are set to “High” and “Continuous” respectively,
regardless of the indicators on the switch panel.
The mode switches between single and continuous mode each time the
single/continuous selector switch is pressed.
In single mode, after the trigger switch has been pulled to start operation,
bolt-tightening stops automatically after 1 to 4 tightenings.
In continuous mode, when the trigger switch is pulled to start operation,
bolt-tightening continues (without stopping automatically).
NOTE:
䡬
The appropriate mode differs depending on the screw and the material
being screwed. Drive in a few test screws and adjust the mode setting
accordingly.
䡬
The high/low and single/continuous selector switches can only be set after
the battery has been installed in the driver and the trigger switch has been
pulled once.
Examples of tightening mode selector function settings
Low 1 Low 2 Medium High
Rotation speed
2600 min
-1
900 min
-1
1400 min
-1
2000 min
-1
/2900 min
-1
Single/Continuous
Single Single Single Continuous
Use
“Delicate work”
Tightening small diameter
screws (M6 or similar), etc.
“Light load work”
Affixing plasterboard (select according to the hardness of the
base material) etc.
“Heavy load work”
Tightening long screws,
coach screws, bolts, etc.
7. Tightening and loosening screws (WH14DBDL / WH18DBDL)
Install the bit that matches the screw, line up the bit in the grooves of the head
of the screw, then tighten it.
Push the impact driver just enough to keep the bit fitting the head of the
screw.
CAUTION
Applying the impact driver for too long tightens the screw too much and
can break it.
Tightening a screw with the impact driver at an angle to that screw can
damage the head of the screw and the proper force will not be transmitted
to the screw.
Tighten with this impact driver lined up straight with the screw.
8. Tightening and loosening bolts
A hex. socket matching the bolt or nut must first be selected. Then mount
the socket on the anvil, and grip the nut to be tightened with the hex. socket.
Holding the wrench in line with the bolt, press the power switch to impact
the nut for several seconds.
If the nut is only loosely fitted to the bolt, the bolt may turn with the nut,
therefore mistaking proper tightening. In this case, stop impact on the nut
and hold the bolt head with a wrench before restarting impact, or manually
tighten the bolt and nut to prevent them slipping.
OPERATIONAL CAUTIONS
1. Resting the unit after continuous work
After use for continuous bolt-tightening work, rest the unit for 15 minutes or
so when replacing the battery. The temperature of the motor, switch, etc.,
will rise if the work is started again immediately after battery replacement,
eventually resulting in burnout.
NOTE:
Do not touch the metal parts, as it gets very hot during continuous work.
2. Cautions on use of the speed control switch
This switch has a built-in, electronic circuit which steplessly varies the
rotation speed. Consequently, when the switch trigger is pulled only slightly
(low speed rotation) and the motor is stopped while continuously driving in
screws, the components of the electronic circuit parts may overheat and be
damaged.
3. Use a tightening time suitable for the screw
The appropriate torque for a screw differs according to the material and size
of the screw, and the material being screwed etc., so please use a tightening
time suitable for the screw. In particular, if a long tightening time is used in
the case of screws smaller than M8, there is a danger of the screw breaking,
so please confirm the tightening time and the tightening torque beforehand.
01Eng_WH14DBDL_EE 12/28/10, 16:4511

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English CAUTION 2 Single Continuousselectorswitch O Do not expose directly your eye to the lig ht by looking into the light The tightening torque can be adjusted according to the work by changing If your eye is continuously exposed to the light your eye will be hurt the tightening mode using the single continuous selector switch and the NOTE high low selector switch on the side of the impact driver O To prevent the battery power consumption caused by forgetting to turn off When the forward reverse button is set to reverse the high low mode and the LED light the lightgoes off automatically in about 15 minutes single continuous 6 Tightening mode selector function Fig 12 mode are set to High and Continuous respectively regardless of the indicators on the switch panel CAUTION The mode switches between single and continuous mode each time the O Do not subject the switch panel to shock or damage single continuous selector switch is pressed O Select h ig h bw mode and single continuous mode while the trigger switch In single mode after the trigger switch has been pulled to start operation is released Failure to do so could result In malfunction bolt tightening stops automatically after 1 to 4tightenings ID High Low selector switch In continuous mode when the trigger switch is pulled to start operatbn The rotation speed changes in 4 steps 900 1400 2000 2600 2900 min each time the high low selector switch is pressed bolt tightening continues withoutstopping automatically NOTE O The appropriate mode differs depending on the screw and the material being screwed Drive in a few test screws and adjust the mode setting accordingly O The high low and single continuous selector switches can only beset after the battery has been installed in the driver and the trigger switch has been pulled once 7 Tightening and loosening screws WH 14DBDL WH18DBDL OPERATIONAL CAUTIONS Install the bit that matches the screw line up the bit in the grooves of the head of the screw then tighten it After use for continuous bolt tig htening work rest the unit for 15 minutes or screw sowhen replacing the battery The temperature of the motor switch etc CAUTION Applying the impact driver for too bng tightens the screw too much and can break it Tightening a screw with the impact driver at an angle to that screw can damage the head of the screw and the proper force will not be transmitted will rise if the work is started again immediately after battery replacement eventually resulting in burnout NOTE Do not touch the metal parts as it gets very hot during continuous work 2 Cautions on use of the speed control switch to the screw This Tighten with this impact driver lined up straight with the screw rotation speed Co nsequently wh en the switch trigger is pu lied o nly slig htly 8 Tightening and loosening bolts A hex socket matching the bolt or nut must first be selected Then mount thesocketon theanvil andgrip the nutto be tightenedwith the hex socket Holding the wrench in line with the bolt press the power switch to impact 11 1 Resting the unit after continuous work Push the impact driver just enough to keep the bit fitting the head of the switch has a built in electronic circuit which steplessfy varies the lowspeed rotation and the motor is stopped while continuously driving in screws the components of the electronic circuit parts may overheat and be damaged 3 Use a tightening time suitable for the screw the nut forseveralseconds The appropriate torque for a screw differs according to the material and size If the nut is only loosely fitted to the bolt the bolt may turn with the nut of the screw and the material being screwed etc so please usea tightening therefore mistaking proper tightening In this case stop impact on the nut time suitable for the screw In particular if a long tightening time is used In and hold the bolt head with a wrench before restarting impact or manually the case ofscrews smaller than M8 there is a danger of the screw breaking tighten the bolt and nut to prevent them slipping so pleaseconfirm the tightening timeand the tightening torque beforehand

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