Worx Nitro WX381 Installation manual

WX381 WX381.X
SAFETY AND OPERATING MANUAL
ORIGINAL INSTRUCTIONS
20V Cordless Brushless
Rotary Hammer

123
4
5
6
7
8
9
21
1
1
2
A1 A2
SDS-plus SDS-plus

E1
100%
0%
C
B
D2
D1
E2
2
1

H
SDS-plus
F1
F3 G
F2
I
1
2

1
2
J
L2
L1
K

7
WX381 WX381.X
20V Cordless Brushless Rotary
Hammer
PRODUCT SAFETY
GENERAL POWER TOOL
SAFETY WARNINGS
WARNING Read all safety warnings and all
instructions.
Failure to follow all instructions
PMWXIHFIPS[QE]VIWYPXMRIPIGXVMGWLSGOƼVIERHSV
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
ƽEQQEFPIPMUYMHWKEWIWSVHYWX
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.
9RQSHMƼIHTPYKWERHQEXGLMRKSYXPIXW
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
SVYRHIVXLIMRƽYIRGISJHVYKWEPGSLSPSV
medication.
A moment of inattention while
operating power tools may result in serious
personal injury.
F 9WITIVWSREPTVSXIGXMZIIUYMTQIRX%P[E]W
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
[MXL]SYVƼRKIVSRXLIW[MXGLSVIRIVKMWMRK
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

8
20V Cordless Brushless Rotary
Hammer WX381 WX381.X
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
E 6IGLEVKISRP][MXLXLIGLEVKIVWTIGMƼIHF]
the manufacturer.
A charger that is suitable for
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when used with another battery pack.
F 9WITS[IVXSSPWSRP][MXLWTIGMƼGEPP]
designated battery packs.
Use of any other
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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
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.
H 9RHIVEFYWMZIGSRHMXMSRWPMUYMHQE]FI
ejected from the battery; avoid contact. If
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PMUYMHGSRXEGXWI]IWEHHMXMSREPP]WIIOQIHMGEP
help.
Liquid ejected from the battery may cause
irritation or burns.
6. SERVICE
E ,EZI]SYVTS[IVXSSPWIVZMGIHF]EUYEPMƼIH
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 tools 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.
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
GEYWIFYVRWSVEƼVI
G (SRSXI\TSWIFEXXIV]TEGOXSLIEXSVƼVI%ZSMH
storage in direct sunlight.
d) Do not subject battery pack to mechanical
shock.
e) In the event of battery leaking, do not allow the
PMUYMHXSGSQIMRXSGSRXEGX[MXLXLIWOMRSVI]IW
If contact has been made, wash the affected
area with copious amounts of water and seek
medical advice.
f) Keep battery pack clean and dry.
g) Wipe the battery pack terminals with a clean dry
cloth if they become dirty.
h) Battery pack needs to be charged before use.
Always refer to this instruction and use the
correct charging procedure.
i) Do not maintain battery pack on charge when
not in use.
j) After extended periods of storage, it may
be necessary to charge and discharge the
battery pack several times to obtain maximum
performance.
O 6IGLEVKISRP][MXLXLIGLEVKIVWTIGMƼIHF]
Worx. Do not use any charger other than that
WTIGMƼGEPP]TVSZMHIHJSVYWI[MXLXLIIUYMTQIRX
l) Do not use any battery pack which is not
HIWMKRIHJSVYWI[MXLXLIIUYMTQIRX
m) Keep battery pack out of the reach of children.
n) Retain the original product literature for future
reference.
S 6IQSZIXLIFEXXIV]JVSQXLIIUYMTQIRX[LIR
not in use.
p) Dispose of properly.
U (SRSXQM\GIPPWSJHMJJIVIRXQERYJEGXYVI
capacity, size or type within a device.
r) Keep the battery away from microwaves and
high pressure.

9
WX381 WX381.X
20V Cordless Brushless Rotary
Hammer
SYMBOLS
To reduce the risk of injury, user
must read instruction manual
Warning
Wear ear protection
Wear eye protection
Wear dust mask
Batteries may enter water cycle if
disposed improperly, which can
be hazardous for ecosystem. Do
not dispose of waste batteries as
unsorted municipal waste.
Do not burn
Li-I on
Li-Ion battery This product has been
marked with a symbol relating to
‘separate collection’ for all battery
packs and battery pack. It will
then be recycled or dismantled in
order to reduce the impact on the
environment. Battery packs can be
hazardous for the environment and
for human health since they contain
hazardous substances.
Li-I on
Li-I on
Waste electrical products must
not be disposed of with household
waste. Please recycle where
facilities exist. Check with your local
authorities or retailer for recycling
advice.
Wear protective gloves
Wood
Steel
Concrete
Plastic
Masonry
High speed
Low speed
Tool Holder
Make sure the battery is removed
prior to changing accessories .
Drilling without impact
Hammer Drilling

10
20V Cordless Brushless Rotary
Hammer WX381 WX381.X
Chiseling
Chisel bit rotation
RCM marking
ABN: Australian Business
Number. By this number, business
information such as entity type,
status, business location etc. can be
JSYRHEX[IFWMXILXXTEFVFYWMRIWW
gov.au.
ABN of Positec Australia Pty Limited
is 14 101 682 357
COMPONENT LIST
1. DUST PROTECTION CAP
2. CHUCK LOCKING SLEEVE
3. FUNCTION SELECTOR DIAL
4.
FORWARD AND REVERSE ROTATION
CONTROL
5.
ON/OFF SWITCH WITH VARIABLE SPEED
CONTROL
6. DEPTH GAUGE
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
Type WX381 WX381.X (3- designation of
machinery, representative of Hammer)
WX381 WX381.X***
Voltage 20 V Max**
No load speed QMR
Impact rate 0-4700bpm
Impact energy 2 J
Max.
drilling
capacity
Steel 13 mm
Wood 28 mm
masonry 22 mm
Machine weight
(Bare tool) 2.1kg
**Voltage measured without workload. Initial
battery voltage reaches maximum of 20 volts.
Nominal voltage is 18 volts.
*** X=1-999, A-Z, M1-M9 there are only used for
different customers, there are no safe relevant
changes between these models.
SUGGESTED BATTERIES
AND
CHARGERS
Category Model Capacity
20V Battery WA3014 4.0Ah
20V Charger WA3880 2.0A
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.
NOISE INFORMATION
A weighted sound pressure LpA= 87 dB(A)
A weighted sound power LwA= 98 dB(A)
KpA&KwA 3.0 dB(A)
Wear ear protection
VIBRATION INFORMATION
Vibration total values (triax cover sum) determined
according to EN60745:
Hammer drilling
into concrete
Vibration emission value
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9RGIVXEMRX]/!QW2

11
WX381 WX381.X
20V Cordless Brushless Rotary
Hammer
Chiseling
Vibration emission value
ah,CHeq!QW2
9RGIVXEMRX]/!QW2
The declared vibration total value may be used for
comparing one tool with another, and may also be
used in a preliminary assessment of exposure.
WARNING: The vibration and noise emissions
during actual use of the power tool can differ
from the declared value depending on the ways in
which the tool is used especially what kind of
workpiece is processed dependant on the following
examples and other variations on how the tool is
used:
How the tool is used and the materials being cut or
drilled.
The tool being in good condition and well
maintained
Using the correct accessory for the tool and
ensuring it is sharp and in good condition.
The tightness of the grip on the handles and if any
anti vibration accessories are used.
And the tool is being used as intended by its design
and these instructions.
This tool may cause hand-arm vibration
W]RHVSQIMJMXWYWIMWRSXEHIUYEXIP]
managed.
WARNING: To be accurate, an estimation of
exposure level in the actual conditions of use
should also take account of all parts of the
operating cycle such as the times when the tool is
switched off and when it is running idle but not
EGXYEPP]HSMRKXLINSF8LMWQE]WMKRMƼGERXP]VIHYGI
the exposure level over the total working period.
Helping to minimise your vibration and noise
exposure risk.
Always use sharp chisels, drills and blades.
Maintain this tool in accordance with these
instructions and keep well lubricated (where
appropriate).
If the tool is to be used regularly then invest in anti
vibration and noise accessories.
Plan your work schedule to spread any high
vibration tool use across a number of days.
OPERATING INSTRUCTIONS
NOTE: Before using the tool, read the
instruction book carefully.
SECURE WORKPIECE
A workpiece clamped with clamping devices is held
more secure than by hand.
INTENDED USE
The machine is intended for hammer drilling and
chiseling in concrete, brick and stone. It can be used
for chiseling in concrete and tile in different required
angle, without other tool. It is also suitable for drilling
without impact in wood, metal, ceramic and plastic.
OPERATION
ACTION FIGURE
-RWIVXMRKHVMPPFMXGLMWIP See Fig. A1
6IQSZMRKHVMPPFMXGLMWIP See Fig. A2
Adjusting the auxiliary handle See Fig. B
Adjusting the depth gauge See Fig. C
Checking the battery charge condition
NOTE: Fig. D1 only applies for the
battery pack with battery indicator light.
See Fig. D1
Charging the battery pack
NOTE:
• The battery is shipped uncharged.
It must be fully charged before the
ƼVWXYWI
• More details can be found in
charger’s manual.
See Fig. D2
Inserting or removing the battery pack See Fig.
E1, E2
Forward and reverse rotation control
WARNING: Never change the
direction of rotation when the
chuck is rotating, wait until it has
stopped!
See Fig.
F1, F2
Switch lock
Note: The switch trigger can be
locked in the off (center) position.
See Fig. F3
3RSJJW[MXGL[MXLZEVMEFPIWTIIH
control See Fig. G
Selecting the function mode
More details refer to FUNCTION
SELECTION
WARNING: The function selector
dial may be actuated only at a
standstill.
WARNING: Prolonged use will
cause the aluminum housing to
become hot, do not touch.
See Fig. H
Drilling (SDS Keyless chuck adaptor
– not supplied)**** See Fig. I
Impact drilling See Fig. J

12
20V Cordless Brushless Rotary
Hammer WX381 WX381.X
Chiseling See Fig. K
Bit rotation (only use it for chiseling)
NOTE: Turn the locking sleeve round
by hand to choose an appropriate
bit angle for chiseling, then rotate
the function selector dial to select
chiseling “ “ symbol. Now you can
start chiseling with the required angle
by this machine.
See Fig. L1
Chiseling with an required bit angle See Fig. L2
Temperature dependent overload
protection 
Protection against deep discharging 
****NOTE: The SDS keyless chuck adaptor illustrated
SVHIWGVMFIHMRSTIVEXMSRXEFPISVƼKYVIWMWRSX
included in WX381 WX381.Xdelivery. It is sold
separately.
FUNCTION SELECTION
For hammer drilling in concrete,
brick and stone
For drilling into steel, wood and
plastics
For chiseling into concrete, brick
and stone
For bit rotation
WORKING HINTS FOR YOUR
TOOL
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 BATTERY PACK
WORKING TIMES
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 0 oC and above 30 oC as this will affect
performance.
MAINTENANCE
Remove the battery pack from the tool before
carrying out any adjustment, servicing or
maintenance.
Your power tool requires no additional lubrication or
maintenance, except for the cleaning & lubrication
of the SDS bits and adaptors before inserting into
the chuck. 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
ɸWaste electrical products must not be
disposed of with household waste. Please
recycle where facilities exist. Check with
your local authorities or retailer for recycling advice.
Positec Australia Pty Limited
10 Corporate Blvd Bayswater , VIC 3153, Australia

13
WX381 WX381.X
20V Cordless Brushless Rotary
Hammer
DECLARATION OF
CONFORMITY
We,
Positec Germany GmbH
Postfach 32 02 16, 50796 Cologne, Germany
On behalf of Positec declare that the product
Description 20V Cordless Brushless Rotary
Hammer
Type Designation WX381 WX381.X (3- designation
of machinery, representative of Hammer)
Function Hammering various materials
Complies with the following directives,
2006/42/EC
2011/65/EU&(EU)2015/863
2014/30/EU
Standards conform to
EN 55014-1
EN 55014-2
EN 60745-1
EN 60745-2-6
8LITIVWSREYXLSVM^IHXSGSQTMPIXLIXIGLRMGEPƼPI
Name Marcel Filz
Address Positec Germany GmbH
Postfach 32 02 16, 50796 Cologne, Germany

Allen Ding
(ITYX]'LMIJ)RKMRIIV8IWXMRK'IVXMƼGEXMSR
Positec Technology (China) Co., Ltd
18, Dongwang Road, Suzhou Industrial
Park, Jiangsu 215123, P. R. China

14
20V Cordless Brushless Rotary
Hammer WX381 WX381.X
DECLARATION OF
CONFORMITY
We,
Positec (UK & Ireland) Ltd
PO BOX 6242, Newbury, RG14 9LT, UK
On behalf of Positec declare that the product
Description 20V Cordless Brushless Rotary
Hammer
Type Designation WX381 WX381.X (3- designation
of machinery, representative of Hammer)
Function Hammering various materials
Complies with the following regulations:
Supply of Machinery (Safety) Regulations 2008
Electromagnetic Compatibility Regulations 2016
The Restriction of the Use of Certain Hazardous
7YFWXERGIWMR)PIGXVMGEPERH)PIGXVSRMG)UYMTQIRX
Regulations
Standards conform to
BS EN 55014-1
BS EN 55014-2
BS EN 60745-1
BS EN 60745-2-6
8LITIVWSREYXLSVM^IHXSGSQTMPIXLIXIGLRMGEPƼPI
Name Jim Kirkwood
Address Positec (UK & Ireland) Ltd
PO BOX 6242, Newbury, RG14 9LT, UK

Allen Ding
(ITYX]'LMIJ)RKMRIIV8IWXMRK'IVXMƼGEXMSR
Positec Technology (China) Co., Ltd
18, Dongwang Road, Suzhou Industrial
Park, Jiangsu 215123, P. R. China

After-sales Service and Application
At www.worx.com you can order spare parts or arrange the
collection of a product in need of servicing or repair.
Tel. Service: 0345 202 9679
E-Mail: [email protected]
www.worx.com
Copyright © 2022, Positec. All Rights Reserved.
AR01646402