Hitachi WH14DBL Technical Data And Service Manual

Brand: Hitachi

Model: WH14DBL

Category: Power tools

Type: Technical Data And Service Manual

This manual is also suitable for

WH 14DBL

CORDLESS IMPACT DRIVE

WH 14DBL

Feb. 2008

LIST No.: G893

MODEL

REMARK:

Throughout this TECHNICAL DATA AND SERVICE MANUAL, a symbol(s) is(are) used in the

place of company name(s) and model name(s) of our competitor(s). The symbol(s) utilized here

is(are) as follows:

Competitors

Symbols Utilized

Company Name Model Name

P MAKITA BTD130F

CONTENTS

Page

1. PRODUCT NAME ---------------------------------------------------------------------------------------------------------- 1

2. MARKETING OBJECTIVE ---------------------------------------------------------------------------------------------- 1

3. APPLICATIONS ------------------------------------------------------------------------------------------------------------ 1

4. STANDARD EQUIPMENT ----------------------------------------------------------------------------------------------- 1

5. SELLING POINTS --------------------------------------------------------------------------------------------------------- 2

5-1. Selling Point

Descriptions ---------------------------------------------------------------------------------------- 3

6. SPECIFICATIONS --------------------------------------------------------------------------------------------------------- 7

6-1. Specifications ---------------------------------------------------------------------------------------------------- 7

6-2. Optional Accessories ------------------------------------------------------------------------------------------- 8

7. COMPARISONS WITH SIMILAR PRODUCTS --------------------------------------------------------------------- 9

7-1.

Specification Comparisons ----------------------------------------------------------------------------------- 9

7-2. Tightening Torque------------------------------------------------------------------------------------------------10

7-3. Tightening Time --------------------------------------------------------------------------------------------------13

7-4. Number of Screws or Bolts Driven --------------------------------------------------------------------------14

8. PRECAUTIONS IN SALES PROMOTION --------------------------------------------------------------------------15

8-1. Safety Instructions -------------------------------------------------------------------------------------------------15

8-2.

Tightening Torque Inspection Prior to Operation ----------------------------------------------------------18

8-3.

Tightening Torque Variation--------------------------------------------------------------------------------------18

8-4.

Precautions for Efficient Use of Charger---------------------------------------------------------------------19

9. OTHER PRECAUTIONS--------------------------------------------------------------------------------------------------20

10. REPAIR GUIDE------------------------------------------------------------------------------------------------------------21

10-1. Precautions in Disassembly and Reassembly------------------------------------------------------------21

10-2. Precautions in Disassembly and Reassembly of Battery Charger-----------------------------------33

11. STANDARD REPAIR TIME (UNIT) SCHEDULES ---------------------------------------------------------------34

Assembly Diagram for WH 14DBL

-1-

1. PRODUCT NAME

Hitachi Cordless Impact Driver, Model WH 14DBL

2. MARKETING OBJECTIVE

The new cordless impact driver Model WH 14DBL is equipped with the newly developed and

highly efficient brushless motor. Features of the Model WH 14DBL include the following.

•

1.3 times higher performance thanks to the highly efficient brushless motor (compared with the

Model WH 14DSL)

•

Light and smooth triggering of the electronic switch and longer service life

•

Wide range of applications thanks to the single/continuous selector switch and the 4-step

high/low selector switch (tightening mode selector function)

•

Highest tightening torque in its class (150 N•m)

•

Battery level warning lamp

•

Built-in LED light

With the new Model WH 14DBL, we aim to expand our market share.

3. APPLICATIONS

• Tightening/loosening of small screws, tapping screws, wood screws, bolts, nuts, etc.

•

Drilling into wood and various other materials (with use of optional accessory drill chuck

adapter).

[Applicable Markets]

•

Wood-product assembly: Tightening/loosening of wood screws

•

Construction industry: Assembly of scaffolding, roofing, aluminum sashes, fencing, etc.; removal

of plastic cones from concrete forms, mounting/removal of form ties; drilling into the wood

frames of concrete forms, etc.

•

Manufacturing industry: Assembly work for automobiles, rolling stock, shipbuilding, agricultural

machinery and tools, industrial machines, steel furniture, etc.

•

Utility industry: Assembly and installation of electric equipment, plumbing facilities, air

conditioning (duct assembly etc.), sanitary fixtures and various other facilities.

•

Service industry: General repair work; installation of advertising aids, automobile repair,

assembly of garages and carports storage sheds, etc.

•

Various other assembly, construction or repair facilities

4. STANDARD EQUIPMENT

Models WH 14DBL

(1) 2LSCK specification: Two BSL 1430 batteries (Li-ion, capacity 3.0 Ah), battery cover,

UC 18YRSL charger and case

(2) NN specification: Only the main body

-2-

5. SELLING POINTS

Slide type lithium-ion battery

Type BSL 1430 (Capacity: 3.0 Ah)

The Type BSL 1430 lithium-ion battery is equipped with the

overdischarge protection circuit, overcurrent protection circuit

and voltage monitoring circuit for each cell for longer service

life and safety.

• The Model WH 14DBL is equipped with the overdischarge

and overcurrent protection circuit to prevent overdischarge

(overuse) of the battery.

• The Type BSL 1430 lithium-ion battery is equipped with the

voltage monitoring circuit for each cell to prevent overcharge

of the battery.

Highest tightening torque in its class (150 N•m)

Battery level warning lamp

Electronic switch

Brushless motor

Built-in white LED light

Tightening mode selector function

Charger specifically designed

for slide type lithium-ion

batteries

Model UC 18YRSL

Latch

(on both sides)

(2) Remove.

(1) Push.

Battery

-3-

Conventional DC motor

Friction is generated between the carbon brush

and the commutator. Such an electric loss

affects the efficiency of the tool.

Brushless motor

The rotator can be rotated without the use of

carbon brushes and commutators because

the current that is applied to the stator coil is

sequentially switched in the inverter circuit.

Thus no friction and electric loss are

generated. The Model WH 14DBL can

operate at a low current and its working

performance is 1.3 times higher than the

Model WH 14DSL.

Carbon brush

Commutator

Inverter

Rotator

Stator

Rotator

Stator

Magnet

Motor coil

Magnet

Conventional switch

The operational load of

the switch trigger is high

in order to activate the

mechanical contact

where high current is

applied. Thus the

contact is apt to be

deteriorated and it

affects the service life.

Electronic switch

The triggering force of the

electronic switch is about

50% less than that of the

conventional model and

the switch movement is

smooth thanks to the

signal contact. Moreover,

it has longer service life

because high current is

not applied to the inside

of the switch and

deterioration of the

contact is minimized.

5-1. Selling Point Descriptions

(1) Brushless motor

The newly developed brushless motor does not require conventional carbon brushes and

commutators. Therefore, the Model WH 14DBL can operate at a low current without friction

and electric loss. Its working performance per charge is 1.3 times higher than the Model

WH 14DSL.

(2) Electronic switch

The triggering force of the electronic switch is about 50% less than that of the conventional

model. Thus the switch moves smoothly and it is easy to adjust finely. Moreover, it has longer

service life because high current is not applied to the switch.

The contact is apt to be deteriorated

because high current is always

applied to the inside of the switch.

Longer service life because

high current is not applied to

the inside of the switch.

-4-

(3) Tightening mode selector function

The Model WH 14DBL can be used for wide range of applications such as heavy load works

requiring high tightening torque and delicate works thanks to the single/continuous selector

switch and the 4-step high/low selector switch.

• Single mode

When the trigger switch is pulled to start operation, bolt tightening stops automatically after 1

to 4 tightenings.

• Continuous mode

When the trigger switch is pulled to start operation, bolt tightening continues (without

stopping automatically).

• High/low selector switch

The rotation speed changes in 4 steps (500, 1,200, 2,000 and 2,600 min

-1

) each time the

high/low selector switch is pressed.

NOTE:

• When the forward/reverse button is set to reverse, the high/low mode and the

single/continuous mode are set to "High" and "Continuous" respectively, regardless of

the indicators on the switch panel.

• 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.

-5-

WH 14DSL

WH 14DBL

153

141

500

1,000

1,500

2,000

N•mkgf•cm

100

150

200

157

Fig. 1 Tightening torque comparison

(4) Highest tightening torque in its class (150 N•m*)

The maximum tightening torque of the Model WH 14DBL is 150 N

•m thanks to the brushless

motor and the optimum striking timing. The data below shows a comparison of actual

measurement among the Model WH 14DBL, Model WH 14DSL and P.

(a) Tightening torque comparison

The following graph shows the torque required for tightening an M14 high-strength bolt in 3

seconds with a socket adapter and a hexagon socket (overall length 40 mm).

(b) Tightening time comparison

The following graph shows the time required for driving a wood screw (5.3 mm in diameter

and 120 mm in length) into lauan. The Model WH 14DBL can drive long screws into hard

workpieces at high speed.

←

Fast Slow

→

Voltage Model

1 2 3 4 5 6 7 8 9 10

(sec.)

14.4 V

HITACHI

WH 14DBL

6.7

14.4 V

HITACHI

WH 14DSL

6.9

14.4 V

P7.4

Fig. 2 Tightening time comparison

* Based on our own research

(14.4-V cordless impact drivers)

-6-

(5) Remaining battery indicator

The Model WH 14DBL is equipped with the remaining battery indicator that is the same as the

well-reputed indicator of the current Model WH 14DSL. The battery remaining power can be

checked just by pressing the remaining battery indicator switch.

(6) Built-in white LED light

The Model WH 14DBL incorporates the white LED light that is the same as the well-reputed

light of the current Model WH 14DSL. It is very convenient for operation in dark places.

State of

lamp

Battery remaining power

The battery remaining power

is enough (about 60% or

higher).

The battery remaining power

is a half.

The battery remaining power

is nearly empty (about 30% or

lower). Recharge the battery

immediately.

NOTE:

• The remaining battery indicator

lamp lights only after the battery

has been installed in the driver and

the trigger switch has been pulled

once.

• The indicator lamps of the high/lo

selector switch and the single/

continuous selector switch go off

immediately even though the

trigger switch is pulled when the

battery remaining power is nearly

empty and the protection function

is activated. It is not faulty.

NOTE:

• To prevent the battery power consumption

caused by forgetting to turn off the LED light,

the light goes off automatically in about 15

minutes.

• The white LED light is lighted by pressing the

light switch only after the battery has been

installed in the driver and the trigger switch

has been pulled once.

-7-

6. SPECIFICATIONS

6-1. Specifications

Model

WH 14DBL

Capacity

Small screw*

4 to 8 mm

Ordinary bolt M5 to M14

High-strength bolt M5 to M12

Tightening torque*

150 N•m (1,530 kgf•cm, 1,330 in-lbs.)

Tip condition

6.35 mm (1/4”) hex. bit shank

Type of motor

Fan cooled DC brushless motor

Main body

Polyamide resin and elastomer ------------------ Housing

Aluminum alloy die casting ------------------------Hammer case

Elastomer ---------------------------------------------Front cover

Battery

Polycarbonate resin

Enclosure

Charger

ABS resin

Type of switch

Variable speed trigger switch with forward/reverse changeover lever (with

brake)

Handle configuration

T-type

No-load rotational speed

(When the battery is fully

charged at ambient

temperature 20°C)

High mode 0 to 2,600 min

-1

Low 2 mode 0 to 1,200 min

-1

Medium mode 0 to 2,000 min

-1

Low 1 mode 0 to 500 min

-1

Impact rate

(When the battery is fully

charged at ambient

temperature 20°C)

High mode 0 to 3,200 min

-1

Low 2 mode 0 to 1,500 min

-1

Medium mode 0 to 2,400 min

-1

Low 1 mode 0 to 600 min

-1

Main body*

1.5 kg (3.3 lbs.) (Including battery)

Weight

Battery

0.5 kg (1.1 lbs.)

Overall length x height

155 mm (6-1/8”) x 238 mm (9-3/8”)

Center height

29 mm (1-9/64”)

LED light

White LED

Remaining battery

indicator lamp

Red LED

Battery

(Type BSL 1430)

Sealed cylindrical lithium-ion battery

Nominal voltage: DC 14.4 V

Nominal capacity: 3.0 Ah

Nominal life: Charging/discharging approximately 1,500 cycles

(in the case of the Model UC 18YRSL charger)

Charger

(Model UC 18YRSL)

Overcharge protection system:

(1) Battery voltage detection (- V system)

Battery temperature detection (dT/dt system)

(2) Battery surface temperature detection (thermostat or thermistor)

(3) 120-minute timer

(4) Stop current detection

Power input: 90 W

Charging time: Approx. 45 minutes [for Type BSL 1430 battery at 20°C (68°F)]

Operable ambient temperature range: 0°C to 40°C (32°F to 104°F)

The maximum allowable temperature of the Type BSL 1430 battery is 50°C (122°F).

Indication method of battery charging function

-8-

*1: M3 (1/8") tapping screws and wood screws are the smallest screws that can be tightened.

*2: The maximum tightening torque is based on tightening an M14 high-strength bolt (strength grade 12.9) for 3

seconds with a socket adapter and a hexagonal socket (entire length 40 mm).

*3: The main body weight does not include the standard accessories and the hook, but includes the battery.

6-2. Optional Accessories

• Plus driver bit

• Hexagon socket

Part name Stamped figure

(mm)

Code No.

5 mm hexagon socket 8 65 (2-9/16”) 8 (5/16”) 996177

6 mm hexagon socket 10 65 (2-9/16”) 10 (3/8”) 985329

5/16” hexagon socket 12 65 (2-9/16”) 12 (15/32”) 996178

8 mm hexagon socket 13 65 (2-9/16”) 13 (1/2”) 996179

10 mm hexagon socket (small type) 14 65 (2-9/16”) 14 (9/16”) 996180

10 mm hexagon socket 16 65 (2-9/16”) 16 (5/8”) 996181

10 mm hexagon socket 17 65 (2-9/16”) 17 (21/32”) 996182

1/2” hexagon long socket 21 166 (6-17/32”) 21 (53/64”) 996197

• Drill chuck adaptor set (Code No. 321823)

The drill chuck adaptor set permits mounting of various types of locally-available drill bits for a

variety of drilling operations.

Bit No. Code No.

No. 2 992671

No. 3 992672

50 mm (2”)

Stamped figure

-9-

7. COMPARISONS WITH SIMILAR PRODUCTS

7-1. Specification Comparisons

Maker

HITACHI

Item Model

WH 14DBL WH 14DSL WH 14DL

Small screw

M 4 to M 8

(5/32" to 5/16")

M 4 to M 8

(5/32" to 5/16")

M 4 to M 10

(5/32" to 3/8")

M 4 to M 8

(5/32" to 5/16")

Ordinary bolt

M 5 to M 14

(3/16" to 9/16")

M 5 to M 14

(3/16" to 9/16")

M 6 to M 14

(1/4" to 9/16")

M 5 to M 14

(3/16" to 9/16")

Capacity

High-strength bolt

M 5 to M 12

(3/16" to 15/32")

M 5 to M 12

(3/16" to 15/32")

M 6 to M 12

(1/4" to 15/32")

M 5 to M 12

(3/16" to 15/32")

Max. tightening

torque

N m

150

(1,530 kgf cm,

1,330 in-lbs.)

145

(1,480 kgf

cm,

1,280 in-lbs.)

140

(1,430 kgf

cm,

1,240 in-lbs.)

140

(1,430 kgf

cm,

1,240 in-lbs.)

No-load rotational

speed

min

-1

High: 0 to 2,600

Medium: 0 to 2,000

Low 2: 0 to 1,200

Low 1: 0 to 500

High: 0 to 2,600

Low: 0 to 2,000

High: 0 to 2,600

Low: 0 to 2,000

0 to 2,400

Impact rate min

-1

High: 0 to 3,200

Medium: 0 to 2,400

Low 2: 0 to 1,500

Low 1: 0 to 600

High: 0 to 3,200

Low: 0 to 2,400

High: 0 to 3,200

Low: 0 to 2,400

0 to 3,200

Catalog specifications

Main body weight

kg 1.5 (3.3 lbs.) 1.4 (3.1 lbs.) 1.5 (3.3 lbs.) 1.4 (3.1 lbs.)

Max. tightening

torque

N m

157

(1,600 kgf cm,

1,390 in-lbs.)

153

(1,560 kgf

cm,

1,355 in-lbs.)

150

(1,530 kgf

cm,

1,330 in-lbs.)

141

(1,440 kgf

cm,

1,250 in-lbs.)

No-load rotational

speed

min

-1

High: 0 to 2,550

Medium: 0 to 1,950

Low 2: 0 to 1,270

Low 1: 0 to 560

High: 0 to 2,580

Low: 0 to 1,960

High: 0 to 2,610

Low: 0 to 2,040

0 to 2,420

Impact rate min

-1

High: 0 to 2,860

Medium: 0 to 2,260

Low 2: 0 to 1,280

Low 1: 0 to 640

High: 0 to 2,790

Low: 0 to 2,210

High: 0 to 3,190

Low: 0 to 2,490

0 to 3,160

Overall length x height mm

155 x 238

(6-1/8" x 9-3/8")

145 x 235

(5-45/64" x 9-1/4")

162 x 236

(6-3/8" x 9-19/64")

146 x 235

(5-3/4" x 9-1/4")

Center height mm 29 (1-9/64") 29 (1-9/64") 27 (1-1/16") 29 (1-9/64")

Main body weight

kg 1.55 (3.4 lbs.) 1.49 (3.3 lbs.) 1.58 (3.5 lbs.) 1.45 (3.2 lbs.)

Measured figures

No-load sound

pressure level

dB (A)71707273

Brushless Motor Provided Not provided Not provided Not provided

Type of switch

Signal terminal

electronic switch

with forward/reverse

changeover lever

Variable speed

switch with

forward/reverse

changeover lever

Variable speed

switch with

forward/reverse

changeover lever

Variable speed

switch with

forward/reverse

changeover lever

Tightening mode selector

Single/Continuous

4-mode

2-mode 2-mode

Not provided

Remaining battery indicator Provided Provided Not provided Not provided

LED light Provided Provided Provided Provided

Voltage V 14.4 14.4 14.4 14.4

Type BSL 1430 BSL 1430 BCL 1430 BL1430

Nominal capacity Ah 3.0 3.0 3.0 3.0

Nominal voltage V 14.4 14.4 14.4 14.4

Battery

Ambient temperature

°C

0 to 40 0 to 40 0 to 40

Model UC 18YRSL UC 18YRSL UC 18YRL DC 18SC

Nominal input capacity VA 90 90 95

Charger

Recharging voltage V 7.2 to 18 7.2 to 18 7.2 to 18 7.2 to 18

Standard accessories

• Plastic tool case

• Charger

(UC 18YRSL)

• Rechargeable battery

• Battery cover

• Plastic tool case

• Charger

(UC 18YRSL)

• Rechargeable battery

• Battery cover

• Plastic tool case

• Charger

(UC 18YRL)

• Rechargeable battery

• Plastic tool case

• Charger

(DC 18SC)

• Rechargeable battery

*1: M3 (1/8") tapping screws and wood screws are the smallest screws that can be tightened.

*2: The max. tightening torque is based on tightening an M14 (9/16") bolt (strength grade: 12.9) for 3 seconds with a

hexagon socket.

*3: The main body weight does not include accessory tools and hook (hexagon bit etc.).

*4: Depending on specifications

-10-

2,600 min

-1

500

1,000

1,500

2,000

Continuous

mkgf cm

100

150

200

100

150

2,000 min

-1

1,200 min

-1

500 min

-1

Continuous Continuous Continuous

7-2. Tightening Torque

7-2-1. Comparison of tightening torque in each mode

The data below shows the tightening torque obtained in each mode of the Model WH 14DBL.

Please note that the data are intended for reference purposes only because the actual tightening

torque may vary depending on hardness of workpieces, diameter of thread, ambient temperature,

characteristics of the battery, etc.

• Tightening torque in continuous mode

The following graph shows the torque required for tightening an M14 high-strength bolt in 3

seconds with a socket adapter and a hexagon socket (overall length 40 mm).

Fig. 3 Tightening torque in continuous mode

• Tightening torque in single mode

The single mode is applicable to delicate works such as tightening small diameter screws and

light load works such as affixing plasterboards. Please note that the actual tightening torque

may vary depending on hardness of workpieces, diameter of thread, ambient temperature,

characteristics of the battery, etc. If the appropriate tightening torque is exceeded especially

when tightening small diameter machine screws, the screws may be damaged. The customers

should be advised to adjust the rotational speed according to the application with the high/low

selector switch and check that the tightening torque is appropriate before operation.

Rotational

speed

Single/

Continuous

-11-

7-2-2. Screw diameter and appropriate tightening torque

Generally speaking, the appropriate tightening torque for a screw can be determined by the

strength grade of the screw and the material tightened. Tables 1 and 2, and Fig. 4 below list data

relative to the strength grade of various screws and the appropriate tightening torque. For further

reference, appropriate tightening torque is calculated with the following formula. Study and use

this formula for accurate selection of tightening torque.

T=k

•

T: Appropriate tightening torque (kgf

•

cm)

d: Nominal diameter of thread (mm)

p: Recommended axial tightening force to be applied to the screw (kgf)

p = Rated axial stress (kgf/mm

) x 0.8 x Effective sectional area of thread (mm

)

k: Torque coefficient (0.17)

• Strength grade and rated axial stress of thread

Table 1

Strength grade 4.8 6.8 8.8 12.9

Rated axial stress (kgf/mm

) 29.1 43.7 58.2 95

Material Mild steel Alloy steel including Ni, Mn, Cr, etc.

Heat treatment Not processed Processed: Hard material

• Diameter and effective sectional area of thread

Table 2

Kind of thread x pitch

M5 x 0.8 mm

(3/16")

M6 x 1 mm

(1/4")

M8 x 1.25 mm

(5/16")

M10 x 1.5 mm

(3/18")

M12 x 1.75 mm

(15/32")

M14 x 2 mm

(9/16")

Effective sectional area

of thread (mm

)

14.2 20.1 36.6 58.0 84.3 115

• Thread diameter and appropriate tightening torque

Fig. 4

-12-

7-2-3. Tightening torque characteristics

The graph below shows the relationship between tightening time and tightening torque according to

types of bolts. The data below are intended for reference purposes only because actual tightening

torque may vary depending on tightening conditions.

NOTE:

• The term "tightening time" means the impact time after the lower surface of the bolt comes

in contact with the washer.

• Each bolt is directly tightened into a steel plate under the following tightening conditions.

Accordingly, the torque goes up very abruptly in comparison with the actual bolt tightening

conditions.

Washe

Bolt

Nut

Steel plate thickness t

Following bolts were used.

Ordinary bolt: Strength grade 4.8

High-strength bolt: Strength grade 12.9

Strength grade is read as follows.

4.8

Yield point of bolt 320 N/mm

{32 kgf/mm

, 45,500 psi }

Tensile strength of bolt 400 N/mm

{40 kgf/mm

, 56,900 psi }

Tightening torque

Tightening time sec.

(Steel plate thickness t = 25 mm)

Ordinary bolt

High-strength bolt

Tightening torque

Ordinary bolt

High-strength bolt

Tightening time sec.

(Steel plate thickness t = 25 mm)

-13-

7-3. Tightening Time

The performance of the Model WH 14DBL is superior to the competitors thanks to the large

hammer and the optimized impact timing. A tightening time comparison is shown below. The data

below are intended for reference purposes only because actual tightening time may vary

depending on hardness of the workpiece, ambient temperature, characteristics of the battery, etc.

1) Wood screw 5.3 mm dia. x 120 mm length, lauan

2) Wood screw 4.5 mm dia. x 90 mm length, hemlock spruce

3) Wood screw 4.5 mm dia. x 75 mm length, hemlock spruce

-14-

7-4. Number of Screws or Bolts Driven

7-4-1. Per-charge working capacity comparison

The table below shows a comparison of the number of screws or bolts that can be driven per

battery charge by the Models WH 14DBL, WH 14DSL and WH 14DL and P. Please note that the

data below are intended for reference purposes only because the number of screws that can be

driven per charge may vary depending on screw tightening conditions, screw size, ambient

temperature and charging capacity of the battery.

Number of screws or bolts driven

Model

Tightening condition

HITACHI

WH 14DBL

HITACHI

WH 14DSL

HITACHI

WH 14DL

Battery

BSL 1430

(Nominal

capacity: 3.0 Ah)

BSL 1430

(Nominal

capacity: 3.0 Ah)

BCL 1430

(Nominal

capacity: 3.0 Ah)

BL 1430

(Nominal

capacity: 3.0 Ah)

Wood screw

4.0 mm dia. x 50 mm

(Soft wood)

1,170 800 950 1,000

Wood screw

4.2 mm dia. x 90 mm

(Hard wood)

210 195 155 160

Wood screw

5.3 mm dia. x 120 mm

(Hard wood)

85 60 60 55

Machine screw

(M8 x 16 mm)

2,590 1,650 1,900 2,000

-15-

8. PRECAUTIONS IN SALES PROMOTION

8-1. Safety Instructions

In the interest of promoting the safest and most efficient use of the Model WH 14DBL cordless

impact driver by all of our customers, it is very important that at the time of sale the salesperson

carefully ensures that the buyer seriously recognizes the importance of the contents of the

Handling Instructions, and fully understands the meaning of the precautions listed on the Caution

Plate and Name Plate attached to each tool.

A. Handling Instructions

Salespersons must be thoroughly familiar with the contents of the Handling Instructions in order

to give pertinent advice to the customer. In particular, they must have a thorough understanding

of the precautions in the use of the cordless (battery charger type) electric power tools which are

different from those of ordinary electric power tools.

(1) Before use, ensure that the battery is fully charged.

New battery is not fully charged. Even if the battery was fully charged at the factory, long

periods without use, such as during shipping, cause the storage battery to lose its charge.

Customers must be instructed to fully charge the battery prior to use.

(2) When charging storage battery, use only the exclusive Model UC 18YRSL charger provided

with the tool.

Because of the designed rapid-charging feature, use of other battery chargers is hazardous.

(3) Follow prescribed steps in using the charger.

First connect the storage battery to the charger, then plug the charger into an AC outlet

(ensuring that the voltage matches that indicated on the unit). If this order is reversed, the

charger may not function properly.

(4) Ensure the power source voltage is the same as that indicated on the Name Plate of the

charger. Use of any other power source (DC outlet, fuel powered generator, etc.) will cause

the charger to overheat and burn out.

(5) Do not use any voltage increasing equipment (transformer etc.) between the power source

and the charger.

If the charger is used with voltage over and above that indicated on the unit, it will not function

properly.

(6) Conduct battery charging at an ambient temperature range of 0 °C to 40 °C (32 °F to 104 °F).

Special temperature sensitive devices are employed in the charger to permit rapid charging.

Ensure that customers are instructed to use the charger at the indicated ambient temperature

range. At temperature under 0 °C (32 °F), the thermostat will not function properly, and the

storage battery may be over-charged. At temperatures over 40 °C (104 °F), the storage

battery cannot be sufficiently charged. The optimum temperature range is 20 °C to 25 °C

(68 °F to 77 °F).

(7) The battery charger should not be used continuously.

At high ambient temperature, if over three storage batteries are charged in succession, the

temperature of the coils on the transformer will rise and there is a chance that the temperature

fuse inserted in the interior of the transformer will inadvertently melt. After charging one

-16-

battery, please charge the next battery after about a fifteen-minute interval.

(8) The charger case is equipped with air vents to protect the internal electronic components from

overheating. Caution the customers not to allow foreign materials such as metallic or

flammable objects to be dropped or inserted into the air vents. This could cause electric shock,

fire or other serious hazards.

(9) Do not attempt to disassemble the storage battery or the charger.

Special devices, such as a thermostat, are built into the storage battery and charger to permit

rapid charging. Incorrect parts replacement and/or wiring will cause malfunctions which could

result in fire or other hazards. Instruct the customers to bring the Model WH 14DBL to an

authorized service center in the event repair or replacement is necessary.

(10) Disposal of the storage battery

Ensure that all customers understand that the storage battery should be returned to the

Hitachi power tool sales outlet or authorized service center when it is no longer capable of

being recharged or repaired. If thrown into a fire, the battery may explode, or if discarded

indiscriminately, leakage of the cadmium compound contained in the battery may cause

environmental pollution.

(11) Effect of the permanent magnet

The Model WH 14DBL has a strong permanent magnet in its motor. Please instruct the

customers about adhesion of dust to the Model WH 14DBL and effect on electronic devices as

follows.

• Do not place the Model WH 14DBL on a workbench or workplace where metal dust is

scattered about.

• Do not touch the dust-adhered Model WH 14DBL. Instruct the customers to remove adhered

dust with a brush.

• Users of medical electronics such as a pacemaker must not use or get close to the Model

WH 14DBL.

• Do not bring precision equipment such as a mobile-phone or electronic recording media such

as a magnetic card close to the Model WH 14DBL.

(12) Keep the battery out of dust.

• Protect the battery from being covered with dust during operation.

• Protect the battery from being covered with dust accumulated on the Model WH 14DBL

during operation.

• Do not leave the battery in a dusty area when not in use.

• Remove dust from the battery and store it separating from metallic parts such as screws and

nails.

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WARNING

• To reduce the risk of injury, user must read and

understand Instruction Manual.

AVERTISSEMENT

• Afin de réduire le risque de blessures, I'utilisateur doit lire

et bien comprendre le mode d'emploi.

CAUTION • Read thoroughly HANDLING INSTRUCTIONS

before use.

• Do not disassemble nor throw into fire.

CAUTION

• For safe operation, see Instruction Manual.

• Charge HITACHI rechargeable batteries Types BSL 14 and

BSL 18 series. Other types of batteries may burst causing

personal injury and damage.

• Charge between 32 °F and 104 °F. Rest 15 minutes between the

charging of batteries.

• Indoor use only.

• Replace defective cord immediately.

B. Caution Plates

(1) The following cautions are listed on the name plate attached to the main body of each tool.

For the U.S.A. and Canada

(2) The following cautions are listed on the name plate attached to each storage battery.

(3) The following cautions are listed on the Name Plate attached to the Model UC 18YRSL

charger.

For the U.S.A. and Canada

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Hitachi WH14DBL Technical Data And Service Manual

Brand: Hitachi

Model: WH14DBL

Category: Power tools

Type: Technical Data And Service Manual

This manual is also suitable for

WH 14DBL

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Hitachi WH14DBL Technical Data And Service Manual

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Hitachi WH14DBL Technical Data And Service Manual

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