Worx Professional WU398 User manual

LITHIUM-ION BRUSHLESS ROTARY HAMMER
יטוחלא ןושיטפ
WU398 WU398.9 WU399 WU399.9

2
3 4
1
9
5
6
8
7
WU398 WU398.9
WU399
WU399.9

11
1
2
2
2
WU399 WU399.9WU398 WU398.9
2
1
DC
B1 D B2
A1 D A2
F
E
G1
H
G2

11
1
2
2
2
WU399 WU399.9WU398 WU398.9
2
1
DC
B1 D B2
A1 D A2
F
E
G1
H
G2

5
EN
PRODUCT SAFETY
GENERAL POWER TOOL
SAFETY WARNINGS
WARNING: Read all safety warnings designated
by the symbol and all instructions.
WARNING: Read all safety warnings and all
instructions. Failure to follow the warnings and
instructions may result in electric shock, fire and/or
serious injury.
Save all warnings and instructions for future
reference.
The term “power tool” in the warnings refers to your
mains-operated (corded) power tool or battery-
operated (cordless) power tool.
1) Work area safety
a) Keep work area clean and well lit. Cluttered or
dark areas invite accidents.
b) Do not operate power tools in explosive
atmospheres, such as in the presence of
flammable liquids, gases or dust. Power tools
create sparks which may ignite the dust or fumes.
c) Keep children and bystanders away while
operating a power tool. Distractions can cause you
to lose control.
2) Electrical safety
a) Power tool plugs must match the outlet. Never
modify the plug in any way. Do not use any
adapter plugs with earthed (grounded) power
tools. Unmodified plugs and matching outlets will
reduce risk of electric shock.
b) Avoid body contact with earthed or grounded
surfaces, such as pipes, radiators, ranges and
refrigerators. There is an increased risk of electric
shock if your body is earthed or grounded.
c) Do not expose power tools to rain or wet
conditions. Water entering a power tool will
increase the risk of electric shock.
d) Do not abuse the cord. Never use the cord for
carrying, pulling or unplugging the power tool.
Keep cord away from heat, oil, sharp edges
or moving parts. Damaged or entangled cords
increase the risk of electric shock.
e) When operating a power tool outdoors, use an
extension cord suitable for outdoor use. Use of
a cord suitable for outdoor use reduces the risk of
electric shock.
f) If operating a power tool in a damp location is
unavoidable, use a residual current device (RCD)
protected supply. Use of an RCD reduces the risk
of electric shock.
3) Personal safety
a) Stay alert, watch what you are doing and use
common sense when operating a power tool. Do
not use a power tool while you are tired or under
the influence of drugs, alcohol or medication. A
moment of inattention while operating power tools
may result in serious personal injury.
b) Use personal protective equipment. Always wear
eye protection. Protective equipment such as dust
mask, non-skid safety shoes, hard hat, or hearing
protection used for appropriate conditions will
reduce personal injuries.
c) Prevent unintentional starting. Ensure the
switch is in the off-position before connecting to
power source and/or battery pack, picking up or
carrying the tool. Carrying power tools with your
finger on the switch or energising power tools that
have the switch on invites accidents.
d) Remove any adjusting key or wrench before
turning the power tool on. A wrench or a key left
attached to a rotating part of the power tool may
result in personal injury.
e) Do not overreach. Keep proper footing and
balance at all times.This enables better control
of the power tool in unexpected situations.
f) Dress properly. Do not wear loose clothing or
jewellery. Keep your hair, clothing and gloves away
from moving parts. Loose clothes, jewellery or long
hair can be caught in moving parts.
g) If devices are provided for the connection of dust
extraction and collection facilities, ensure these
are connected and properly used. Use of dust
collection can reduce dust-related hazards.
4) Power tool use and care
a) Do not force the power tool. Use the correct
power tool for your application. The correct power
tool will do the job better and safer at the rate for
which it was designed.
b) Do not use the power tool if the switch does not
turn it on and off. Any power tool that cannot be
controlled with the switch is dangerous and must be
repaired.
c) Disconnect the plug from the power source and/
or the battery pack from the power tool before
making any adjustments, changing accessories,
or storing power tools. Such preventive safety
measures reduce the risk of starting the power tool
accidentally.
d) Store idle power tools out of the reach of
children and do not allow persons unfamiliar
with the power tool or these instructions to
operate the power tool. Power tools are dangerous
in the hands of untrained users.
e) Maintain power tools. Check for misalignment or
binding of moving parts, breakage of parts and
any other condition that may affect the power
tool’s operation. If damaged, have the power tool
repaired before use. Many accidents are caused by
poorly maintained power tools.
f) Keep cutting tools sharp and clean. Properly
maintained cutting tools with sharp cutting edges
are less likely to bind and are easier to control.
g) Use the power tool, accessories and tool bits etc.
in accordance with these instructions, taking
into account the working conditions and the
work to be performed. Use of the power tool for
operations different from those intended could
result in a hazardous situation.
5) Battery tool use and care
a) Recharge only with the charger specified by the
manufacturer. A charger that is suitable for one
type of battery pack may create a risk of fire when
used with another battery pack.
b) Use power tools only with specifically

6
EN
designated battery packs. Use of any other battery
packs may create a risk of injury and fire.
c) When battery pack is not in use, keep it away
from other metal objects, like paper clips, coins,
keys, nails, screws or other small metal objects,
that can make a connection from one terminal
to another. Shorting the battery terminals together
may cause burns or a fire.
d) Under abusive conditions, liquid may be ejected
from the battery; avoid contact. If contact
accidentally occurs, flush with water. If liquid
contacts eyes, additionally seek medical help.
Liquid ejected from the battery may cause irritation
or burns.
6) Service
a) Have your power tool serviced by a qualified
repair person using only identical replacement
parts. This will ensure that the safety of the power
tool is maintained.
HAMMER SAFETY
WARNINGS
1. Wear ear protectors. Exposure to noise can cause
hearing loss.
2. Use auxiliary handle(s), if supplied with the tool.
Loss of control can cause personal injury.
3. Hold power tool by insulated gripping surfaces,
when performing an operation where the cutting
accessory may contact hidden wiring. Cutting
accessory contacting a “live” wire may make
exposed metal parts of the power tool “live” and
could give the operator an electric shock.
ADDITIONAL SAFETY
RULES FOR HAMMER
1. Always wear a dust mask.
SAFETY WARNINGS FOR
BATTERY PACK
a) Do not dismantle, open or shred cells or battery
pack.
b) Do not short-circuit a battery pack. Do not store
battery packs haphazardly in a box or drawer
where they may short-circuit each other or be
short-circuited by conductive materials. When
battery pack is not in use, keep it away from other
metal objects, like paper clips, coins, keys, nails,
screws or other small metal objects, that can make
a connection from one terminal to another. Shorting
the battery terminals together may cause burns or a
fire.
c) Do not expose battery pack to heat or fire. Avoid
storage in direct sunlight.
d) Do not subject battery pack to mechanical shock.
e) In the event of battery leaking, do not allow the
liquid to come into contact with the skin or eyes.
If contact has been made, wash the affected
area with copious amounts of water and seek
medical advice.
f) Seek medical advice immediately if a cell or
battery pack has been swallowed.
g) Keep battery pack clean and dry.
h) Wipe the battery pack terminals with a clean dry
cloth if they become dirty.
i) Battery pack needs to be charged before use.
Always refer to this instruction and use the
correct charging procedure.
j) Do not maintain battery pack on charge when
not in use.
k) After extended periods of storage, it may
be necessary to charge and discharge the
battery pack several times to obtain maximum
performance.
l) Battery pack gives its best performance when it
is operated at normal room temperature (20 °C ±
5 °C).
m) When disposing of battery packs, keep battery
packs of different electrochemical systems
separate from each other.
n) Recharge only with the charger specified by
WORX. Do not use any charger other than that
specifically provided for use with the equipment.
A charger that is suitable for one type of battery
pack may create a risk of fire when used with
another battery pack.
o) Do not use any battery pack which is not
designed for use with the equipment.
p) Keep battery pack out of the reach of children.
q) Retain the original product literature for future
reference.
r) Remove the battery from the equipment when
not in use.
s) Dispose of properly.

7
EN
SYMBOL
To reduce the risk of injury, user must
read instruction manual
Warning
Wear ear protection
Wear eye protection
Wear dust mask
Do not burn
Do not expose to rain or water
Wear protective gloves
Masonry
Brickwork
High speed
Low speed
Tool Holder
Hex
Make sure the battery is removed prior
to changing accessories
Hammer Drilling
Chiseling
Lock
Unlock
Li-Ion
Li-Ion
Do not dispose of batteries. Return
exhausted batteries to your local
collection or recycling point

8
EN
COMPONENT LIST
1. Dust protection cap
2. Tool holder locking sleeve
3. Function mode selection switch
4. Forward and reverse rotation control
5. On/off switch
6. Hand grip area
7. Battery pack release button
8. Battery pack*
9. Auxiliary Handle
* Not all the accessories illustrated or described are included in standard delivery.
TECHNICAL DATA
WU398 WU398.9 WU399 WU399.9
Rated voltage 20V
Rated no load speed 1250/min
Rated impact rate 4800bpm
Chuck capacity 26mm
Impact energy
5J
Chuck type square round
Max. drilling
capacity masonry 26mm
Machine weight 4.5kg 3.6kg 4.5kg 3.6kg
ACCESSORIES
WU398 WU399 WU398.9 WU399.9
6.0Ah battery pack
(WA3401) 2 /
6A charger (WA3922) 1 /
Auxiliary handle 1 1
Grease oil for drill bits 1 1
We recommend that you purchase your accessories from the same store that sold you the tool. Refer to the
accessory packaging for further details. Store personnel can assist you and offer advice.

9
EN
OPERATING
INSTRUCTIONS
NOTE: Before using the tool, read the instruction
book carefully.
Intended Use
The machine is intended for hammer drilling in concrete,
brick and stone as well as for light chiseling work.
OPERATION
ACTION FIGURE
Removing the battery
pack See Fig. A1
Installing the battery
pack See Fig. A2
Inserting the bit See Fig. B1, B2
Removing the bit See Fig. C
Adjusting the auxiliary
handle See Fig. D
Starting/stopping See Fig. E
Switch lock
NOTE: The switch
trigger can be locked in
the off position.
See Fig. F
Forward / reverse
rotation control See Fig. G1, G2
Selecting the operating
mode
- For simultaneous
drilling and impacting of
concrete or masonry,
choose the hammer
drilling position
- For chiseling, choose
the chiseling position
WARNING:The
operating mode
selector switch may
be actuated only at a
standstill.
See Fig. H
OVERLOAD PROTECTION
If the tool insert becomes caught or jammed, the drive
to the drill spindle is interrupted. Because of the forces
that occur, always hold the power tool firmly with both
hands and provide for a secure stance.
WORKING HINTS FOR
YOUR HAMMER
If your power tool becomes over heated, set the speed
to maximum and run no load for 2-3 minutes to cool
the motor. SDS-plus tungsten carbide drill bits should
always be used for concrete and masonry. When drilling
in metal, only use HSS drill bits in good condition. Where
possible use a pilot hole before drilling a large diameter
hole.
PROBLEM SOLUTION
1. REASONS FOR DIFFERENT CHARGING TIMES
Your charge time can be affected by many reasons which
are not defects in your product. If the battery pack is
only partly discharged it may be re-charged in less than
1 hour. If the battery pack and ambient temperature are
very cold then re-charging may take 1-1.5 hours. If the
battery pack is very hot it will not re-charge because
the internal temperature safety cutout will prevent it.
If the battery pack is very hot you must remove your
battery pack from the charger and allow your battery
pack to cool first to ambient temperature and then
recharging can be started. If you charge a second battery
pack immediately after the first then the charger can
be overheated. Always allow at least 15 minutes rest
between battery pack charging.
2. REASONS FOR DIFFERENT BATTERY PACK
WORKINGTIMES
Charging time problems, having not used a battery pack
for a prolonged time will reduce the battery pack working
time. This can be corrected after several charge and
discharge operations by charging & working with your
tool. Heavy working conditions such as large screws into
hard wood will use up the battery pack energy faster
than lighter working conditions. Do not re-charge your
battery pack below 0oC and above 30oC as this will affect
performance.
MAINTENANCE
Remove the battery pack before carrying out any
adjustment, servicing or maintenance.
Your power tool requires no additional lubrication or
maintenance. There are no user serviceable parts in
your power tool. Never use water or chemical cleaners
to clean your power tool. Wipe clean with a dry cloth.
Always store your power tool in a dry place. Keep the
motor ventilation slots clean. Keep all working controls
free of dust. Occasionally you may see sparks through
the ventilation slots. This is normal and will not damage
your power tool.
ENVIRONMENTAL
PROTECTION
Disposal
The machine, its accessories and packaging
materials should be sorted for environmentally
friendly recycling.
The plastic components are labelled for categorized
recycling.

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




15

2







0°C
45°C

















9090

www.semicom.co.il

HE
4

1
2
3
4
5
6
7
8
9


WU399.9 WU399 WU398.9 WU398
20V 
1250 
4800bpm 
26mm 
 
  
26mm  

    

WU398 WU399 WU398.9 WU399
2 
1 
1 1 
1 1 



HE
3















Hex















n
n

HE
2


 5
 


 


 




 




 6
 



 1

 2

 3







 1


 

 







 

 
 



 
 

 


 


 
C20 ±°C5
 


 




 




 

 

 
 
 
 
 






HE
1








 1
 

 



 


 2
 




 
 .

 


 




 



 


 3
 




.
 



 




 



 
 .


 



 


 4
 



 


 




 




 





 


 

 

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