Worx Nitro WX840.X Series Installation manual

SAFETY AND OPERATING MANUAL
ORIGINAL INSTRUCTIONS
20V Cordless 18 gauge Nail/
Staple Gun WX840 WX840.X

3
WX840 WX840.X
20V Cordless 18 gauge Nail/
Staple Gun
PRODUCT SAFETY
GENERAL POWER TOOL
SAFETY WARNINGS
WARNING: Read all safety warnings and all
instructions. Failure to follow the warnings and
MRWXVYGXMSRW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[MPP
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
XLIMRƽYIRGISJHVYKWEPGSLSPSVQIHMGEXMSRA
moment of inattention while operating power tools
may result in serious personal injury.
F 9WITIVWSREPTVSXIGXMZIIUYMTQIRX%P[E]W[IEV
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. 'EVV]MRKTS[IVXSSPW[MXL]SYVƼRKIVSR
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.

4
WX840 WX840.X
20V Cordless 18 gauge Nail/
Staple Gun
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]XLI
manufacturer. A charger that is suitable for one
X]TISJFEXXIV]TEGOQE]GVIEXIEVMWOSJƼVI
when used with another battery pack.
F 9WITS[IVXSSPWSRP][MXLWTIGMƼGEPP]HIWMKREXIH
battery packs. Use of any other battery packs may
GVIEXIEVMWOSJMRNYV]ERHƼVI
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
QE]GEYWIFYVRWSVEƼVI
H 9RHIVEFYWMZIGSRHMXMSRWPMUYMHQE]FIINIGXIH
from the battery; avoid contact. If contact
EGGMHIRXEPP]SGGYVWƽYWL[MXL[EXIV-JPMUYMH
contacts eyes, additionally seek medical 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.
NAILER SAFETY WARNINGS
1. Always assume that the tool contains fasteners.
Careless handling of the nailer can result in
YRI\TIGXIHƼVMRKSJJEWXIRIVWERHTIVWSREPMRNYV]
2. Do not point the tool towards yourself or anyone
nearby. Unexpected triggering will discharge the
fastener causing an injury.
3. Do not actuate the tool unless the tool is placed
ƼVQP]EKEMRWXXLI[SVOTMIGIIf the tool is not in
contact with the workpiece, the fastener may be
HIƽIGXIHE[E]JVSQ]SYVXEVKIX
4. Disconnect the tool from the battery when the
fastener jams in the tool. While removing a
jammed fastener, the nailer may be accidentally
activated if it is plugged in.
5. Use caution while removing a jammed fastener.
The mechanism may be under compression and
the fastener may be forcefully discharged while
attempting to free a jammed condition.
6. Do not use this nailer for fastening electrical
cables. It is not designed for electric cable
installation and may damage the insulation of
electric cables thereby causing electric shock or
ƼVILE^EVHW
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
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RSX
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.
SYMBOLS
To reduce the risk of injury, user must
read instruction manual

5
WX840 WX840.X
20V Cordless 18 gauge Nail/
Staple Gun
Warning
Wear ear protection
Wear eye protection
Wear dust mask
Make sure the battery is removed
prior to changing accessories
Wear protective gloves
Do not burn
Batteries may enter water cycle if
disposed improperly, which can be
hazardous for ecosystem. Do not dis-
pose of waste batteries as unsorted
municipal waste
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
RCM marking
ABN: Australian Business Number.
By this number, business information
such as entity type, status, business
location etc. can be found at website
LXXTEFVFYWMRIWWKSZEY
ABN of Positec Australia Pty Limited
is 14 101 682 357

6
WX840 WX840.X
20V Cordless 18 gauge Nail/
Staple Gun
11
12
4
5
7
10
9
8
6
3
1
2
14
16
15
13

7
WX840 WX840.X
20V Cordless 18 gauge Nail/
Staple Gun
1
2
1
2
1
2
20mm
25mm
32mm
35mm
38mm
40mm
45mm
50mm
C2C1
BA3
A2A1

8
WX840 WX840.X
20V Cordless 18 gauge Nail/
Staple Gun
1
2
1
2
2
1
25mm
19mm
32mm
38mm
40mm
5.7mm
G
DC3
E1 E2
F

9
WX840 WX840.X
20V Cordless 18 gauge Nail/
Staple Gun
1
2
2
1
H2
H1
H3

10
WX840 WX840.X
20V Cordless 18 gauge Nail/
Staple Gun
COMPONENT LIST
1. NO-MAR PAD
2. WORKPIECE CONTACT
3. DRIVE DEPTH ADJUSTMENT
4. ON/OFF SWITCH
5. LED WORKLIGHT SWITCH
6. INDICATOR LIGHT
7. MODE SE LECTO R
8. BATTERY PACK RELEASE BUTTON *
9. BATTERY PACK *
10. BELT HOOK
11. SIDE-LOADING MAGAZINE
12. LOW NAIL INDICATOR WINDOW
13. LED WORKLIGHTS
14. MAGAZINE RELEASE BUTTON
15. SPARE NO-MAR PAD
16. ALLEN KEY
* Not all the accessories illustrated or described are
included in standard delivery.
TECHNICAL DATA
Type WX840 WX840.X (840 - designation of
machinery, representative of nail gun)
WX840
WX840.X **
Voltage 20 V Max***
Magazine capacity 100 nails
Nailer speed REMPWQMR
Nail type 18 gauge
Nail length
Brad nail 20 mm - 50 mm
Crown staple 19 mm - 40 mm
Machine weight (bare tool) 2.9 kg
Work with nails of other brands:
Brad nails : RAPID®– Type 8; NOVUS®– E Type J;
PREBENA®– Type J
Crown staples: RAPID
®
– Type 90
** X=1-999, A-Z, M1-M9 there are only used for
different customers, there are no safe relevant
changes between these models.
*** Voltage measured without workload. Initial
battery voltage reaches maximum of 20 volts.
Nominal voltage is 18 volts.
SUGGESTED BATTERIES
AND CHARGERS
Category Type Capacity
20V Battery
WA3550 1.5 Ah
WA3550.1 1.5 Ah
WA3551 2.0 Ah
WA3551.1 2.0 Ah
WA3553 4.0 Ah
20V Charger WA3880 2.0 A
We recommend that you purchase your accessories
listed in the above list 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: 77.5 dB(A)
A weighted sound power LwA: 88.5 dB(A)
KpA&KwA 3 dB(A)
Wear ear protection.
VIBRATION INFORMATION
Vibration total values (triax vector sum) determined
according to EN 60745:
Vibration
emission value:
ah!QW2
9RGIVXEMRX]/!QWs
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.

11
WX840 WX840.X
20V Cordless 18 gauge Nail/
Staple Gun
WARNING: The vibration emission value during
actual use of the power tool can differ from the
declared value depending on the ways in which the tool
is used 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
The use 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 syndrome if
MXWYWIMWRSXEHIUYEXIP]QEREKIH
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 actually doing the
NSF8LMWQE]WMKRMƼGERXP]VIHYGIXLII\TSWYVIPIZIP
over the total working period.
Helping to minimise your vibration 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 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.
INTENDED USE
This tool is intended for nailing decoration of board
line, skirting line and wooden frame, etc.
WARNING: Do not point the nail gun to people
or animals. Always remove the nails and the
battery pack when not using the tool.
ASSEMBLY AND OPERATION
ACTION FIGURE
BEFORE OPERATION
Removing the battery pack See Fig. A1
Charging the battery pack See Fig. A2
Installing the battery pack See Fig. A3
ASSEMBLY
Installing the belt hook
NOTE: The belt hook can be
installed on the left or right side
of the nail gun.
See Fig. B
0SEHMRKXLIFVEHREMPWGVS[R
staples
NOTE: Keep pressing the
magazine release button
when opening or closing the
magazine.
WARNING: Keep the tool
pointed away from
yourself and others when
loading nails. Failure to do so
could result in possible serious
personal injury.
See Fig. C1,
C2, C3
OPERATION
Selecting the nailing mode
Single sequential actuation
mode:
Contact actuation mode:
WARNING: The nail gun
will not function properly
if the selector is not securely
seated in either position. Always
assure the selector is seated
properly to avoid an unexpected
nail discharge and possible
serious personal injury.
See Fig. D
9WMRKXLISRSJJW[MXGLMRX[S
different modes
/IITTVIWWMRKXLISRSJJW[MXGL
when moving the tool in the
contact actuation mode as
shown in Fig. E2.
NOTE: The nail gun will be
functioned only when pressing
the switch and pushing the
workpiece contact against the
work surface at the same time.
WARNING: Never wedge
or hold back the
workpiece contact mechanism
during operation of the tool.
Doing so could result in possible
serious injury.
See Fig. E1, E2
Drive depth adjustment
NOTE: Drive a test nail after
each adjustment until the
desired depth is set.
See Fig. F

12
WX840 WX840.X
20V Cordless 18 gauge Nail/
Staple Gun
LED worklight
NOTE: The LED Worklights
provide feedback to indicate
whether the battery pack is
GLEVKIHWYƾGMIRXP]ERHSVMJXLI
tool is functioning properly.
See Fig. G
Removing a jammed nail
Try to operate the tool for two
QSVIXMQIWXSGSRƼVQXLIREMPMW
jammed.
WARNING: Always
remove the battery pack
ƼVWX
• Remove the nail and keep the
magazine open.
• The nail jam can be freed by
MRWIVXMRKEƽEXFPEHIWGVI[HVMZIV
into the tip of the driving
mechanism and push it back.
• Be sure the cover is closed and
the screws are tighten before
using the tool again.
See Fig. H1,
H2, H3
MAINTENANCE
Remove the battery pack from the tool before
carrying out any adjustment, servicing 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.
Positec Australia Pty Limited
10 Corporate Blvd Bayswater , VIC 3153, Australia
ENVIRONMENTAL
PROTECTION
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.

13
WX840 WX840.X
20V Cordless 18 gauge Nail/
Staple Gun
TROUBLESHOOTING
Symptom Possible Causes Possible Solution
Tool does not operate properly:
KVIIRPMKLXƽEWLMRK
green light on
VIHPMKLXƽEWLMRK
red light on
Tool is overheat
No nails
Jammed nails
Low battery
Wait until the tool cools down
Replenish nails
Removing a jammed nail
Recharge battery
Tool operates properly, but fasteners
do not drive fully
Depth of drive isn’t deep enough
Nail is too long for wood hardness
Adjust depth of drive
Use nail length that is appropriate for
wood
Tool operates properly, but fasteners
are driven too deep
Depth of drive is too deep Adjust depth of drive
Tool jams frequently Incorrect nails
Damaged nails
Loose magazine
Dirty magazine
Verify that nails are the correct size
Replace nails
Tighten screws
Clean magazine

14
WX840 WX840.X
20V Cordless 18 gauge Nail/
Staple Gun
DECLARATION OF
CONFORMITY
We,
Positec Germany GmbH
Postfach 32 02 16, 50796 Cologne, Germany
On behalf of Positec declare that the product
Description WorxNITRO Cordless Nail Gun
Type WX840 WX840.X (840 - designation of machinery,
representative of nail gun)
Function Fastening various materials
Complies with the following Directives:
2006/42/EC
2014/30/EU
2011/65/EU&(EU)2015/863
Standards conform to
EN 60745-1
EN 60745-2-16
EN 55014-1
EN 55014-2
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

15
WX840 WX840.X
20V Cordless 18 gauge Nail/
Staple Gun
DECLARATION OF
CONFORMITY
We,
Positec (UK & Ireland) Ltd.
PO Box 6242, Newbury, RG14 9LT, UK
Declare that the product
Description WorxNITRO Cordless Nail Gun
Type WX840 WX840.X (840 - designation of machinery,
representative of nail gun)
Function Fastening 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 60745-1, BS EN 60745-2-16,
BS EN 55014-1, BS EN 55014-2
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

Copyright © 2022, Positec. All Rights Reserved.
AR01481205
www.worx.com
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]