Xinpu XP-G90A User manual

Demolition Hammer
Model:XP-G90A
HANDLING INSTRUCTIONS
Original Instructions
Before using this demolition hammer, please carefully read though these HANDLING
INSTRUCTIONS. Ensure that you know how the machine works, and how it should be
operated. Maintain the machine inaccordance with the instructions, and make certain that the
machine work correctly, please store this instriation and other enclosed documents with the
machine together

Application
This hammer should be applied to breaking concrete, chipping off concrete, grooving, bar cutting,
and driving piles in installation of piping and wiring, unitary facility installation, machinery installation
water supply, and drainage work, interior jobs, harbor facilities and other civil engineering work etc..
Contents
1. Machine information
2. Safety instruction
3. Assembly
4. Operation
5. Maintenance
6. Warranty
7. Environment
Technical specifications
Machine Type XP-G90A
Voltage AC 220-240V
Frequency 50Hz
Input power 2200W
Impact rate 950 min-1
Weight 30kg
Sound pressure values (in
accordance with 2000/14/EC) 105.38dB(A)
Guaranteed Sound power values
(in accordance with 2000/14/EC) 110dB(A)
Note: Noise and vibration values are determined acc. to EN 60745-1 and EN 60745-2-6.
Note: The declared vibration value has been measured in accordance with a standard test method and
may be used for comparing one power tool with another.
The declared vibration value may also be used to evaluate the exposure for the user caused by vibration
in advance.
Warning! Depending on the actual use of the power tool the vibration values can differ from
the declared total.
Adopt proper measures to protect yourself against vibration exposures. Take the whole work
process including times the power tool is running under no load or switched off into
consideration.
Proper measures include among others regular maintenance and care of the power tool and
application tools, keeping hands warm, periodical breaks and proper planning of work
processes.
1. Machine information

Standard accessories
One bottle of grease 60g (one bottle)
point chisel(28*410mm) 1 piece
flat chisel(28*410mm) 1 piece
Carbon brush 1 couple
Optional accessories (sold separately）
Notice: Optional accessories (sold separately) are recommended only for specified purpose in
manual, any other brand accessories or attachments used may present risk of injury.
1. Bull point Hexagon size28*530 length (Unit:mm)
2. Flat chisel Hexagon size28*530 length (Unit:mm)
3. Cutter Hexagon size28*530 length (Unit:mm)
4. Scoop Hexagon size28*530 length (Unit:mm)

5. Bush hammer heads + Shank Hexagon size28*410 length (Unit: mm)
Toothdistance:12mm
Toothhigh:8mm
Length*width: 60*60mm
6. Tamping plate + Shank Hexagon size28*394 length (Unit: mm)
Length*width: 150*150mm
7. Big flat spade+ Shank Hexagon size30*296 length (Unit: mm)
Length*width: 170*150mm
8 .Lubricate oil one bottle(60g)

In this operator's manual/or machine’s labels following symbols are used:
Read the manual carefully
Accordance with essential applicable safety of European directives
Double insulation
Denote risk of personal injury, loss of life or damage to the tool in case of nonobservance of
the instruction in this manual.
Indicate electrical shock hazard.
Immediately unplug the plug from the main electricity in the case that the cord gets damage
and during maintenance.
Wear ear and eye protection.
Faulty and /or discarded electrical or electronic apparatus have
tobecollectedatthe appropriate recycling location.
2. Safet
y
instructions

General Power Tool Safety Warnings
WARNING：
Read all safety warnings and all instructions. Failure to follow all 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 refer to your mains operated (corded) power tool or battery
operated (cordless) power tool.
1) Work area
a)Keep work area clean and well lit. Cluttered and 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 tools 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 safety equipment. Always wear eye protection. Safety equipment such as dust mask,
non-skid safety shoes, hard hat, or hearing protection used for appropriate conditions will
reduce personal injuries.
c) Avoid accidental starting. Ensure the switch is in the off position before plugging in.
Carrying power tools with your finger on the switch or plugging in 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 these devices can reduce dust related
ha2ards.
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 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 tools 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 and
in the manner intended for the particular type of power tool, taking into account the
working conditions and the work to be performed. Use of the power tool for operations
different from intended could result in a hazardous situation.
5) 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.
Special Warning for Electric hammer
• Wear ear protection. Exposure to noise can cause hearing loss.
• Use auxiliary handle with the tool. Loss of control can cause personal injury.
• Hold Power tool by insulated gripping surfaces, when performing an operation where the
cutting accessory may contact hidden wiring or its own cord. Cutting accessory contacting a
“live” wire may make exposed metal parts of the power tool “live” and could give the operator an
electric shock.
• Wear a dust mask.
Additional safety rules:
1. Wear a hard hat (safety helmet), safety glasses and /or face shield. It is also highly
recommended that you wear a dust mask, ear protectors and thickly padded gloves.
2、Be sure the bit is secured in place before operation.
3. Under normal operation, the machine is designed to produce vibration, the screws and bolts can come
loose, causing a breakdown and accidents. Check tightness of them carefully before running.
4、In cold weather or a long time tool not be used, please keep the tool running without load a few
minutes to warm up the grease inside, otherwise hammering function is difficult to get.
5、Be sure you stand stably and no one is below when you using tool is in high location.
6、Hold the tool firmly with two hands.
7、Don't touch any moving parts.
8、Don't leave the tool running itself, operate tool only when hand-held.
9、Don't point the tool to anybody for the bit could fly out in case.
10、When chipping into walls, floors or wherever "live" electrical wire may be encountered,
DON'T TOUCH ANY METAL PARTS OF THE TOOL! Hold the tool by the insulated
grasping surface to prevent electric shock if you chip into a "live" wire.
11、Don't touch the BIT OR PARTS CLOSE TO THE BIT immediately after operation, they may

extremely hot and could burn your skin.
12、Any damage and abnormal happen, please stop to use immediately and disconnect it, ask authorized
serve center to check and repair.
13. Parts replace: Only original can be used to replace by authorized service center.
14. Right use accessories and parts: Don't use other parts and accessories which not mentioned in the
manual otherwise may cause injuries!
15. Special attention to voltage: Before connect the power tool, please make sure the rated voltage on
the tool can match the power supply, otherwise the power tool may be damaged and cause injuries.
16. Don't wipe plastic part with solvent: Solvent such as gasoline, thinner, alcohol etc. these kind of
chemical material, are not allowed to use, water or soap are recommended!
17. In case of damages the replacement of the plug or the supply cord shall always be carried out
by the manufacturer of the tool or his service organization
Residual risks
Even when the power tool is used as prescribed it is not possible to eliminate all residual risk
factors. The following hazards may arise in connection with the power tool’s construction and
design:
a) Injuries and damage to property to due to broken accessories that are suddenly dashed.
b) Health defects resulting from vibration emission if the power tool is being used over longer period of
time or not adequately managed and properly maintained.
c) Lung damage if don’t use dusk mask.
d) Hearing damage if don’t use ear protection.
Warning! This power tool produces an electromagnetic field during operation. This field may
under some circumstances interfere with active or passive medical implants. To reduce the risk of
serious or fatal injury, we recommend persons with medical implants to consult their physician and the
medical implant manufacturer before operating this power tool.

Name of the parts
Mounting tool bits
Warning: before do it, make sure unplug the machine!
(1) Pull out of the retainer "2", turning 180 clockwi℃se or
anticlockwise, insert the accessory shank portion"1" into the hole on the front cover.
(2) Turning the retainer back into original position.
Remarking : When you removing the accessory, such as a bull point,
a cutter etc.., follow above procedure in reverse order.
1 Accessory
2 Pull out,turning+/-180 degree
3. Assembl
y

Prior to operation
1. Power source
Ensure that the power source to be utilized conforms to the power requirements which
specified on the name plate of the hammer.
2. Power switch
Ensure that the power switch is in the position of OFF. If the plug is connected to power
receptacle while the power switch is in ON position, the demolition hammer will start operation
immediately, which can cause serious accident!
3. Extension cord
When the work area is removed from the power source, use an extension cord of sufficient
thickness and rated capacity. The extension cord should be kept as short as practicable.
Operation
1. Switch operation
Switch on Press the switch towards ①direction
Switch off Release the switch towards ②direction
2. Operate this demolition hammer by utilizing outside force. The performance will be better if it
is pressed or thrusted with properly force against the work surface.
Note:
Sometimes the power tool does not begin the striking the stroke even the motor keep running,
because oil inside become thick. If the power tool is used at a low temperature, or it is used
after a long idle time, this demolition hammer should be kept running for above 5 minutes to
warm up.
4. O
p
eration

Before do any maintenance, ensure unplug the plug.
GREASEANDOILFILLING
Demolition hammer mechanical part is easy to get worn and lose impact energy if without
enough lubrication, recommend filling grease and oil after 6 months usage. The steps as
follows:
Fig 1
Fig 2
Fig 3
Fig 4 Fig 5 Fig 6
Fig 7 Fig 8 Fig 9
5. Maintenance
Fill the 65g grease into the
aluminum head botto
m
Fill the 5g grease
into the Piston
Fill the 12g
oil into the
cylinder

1. Loosen the 4 screws between aluminum head and gear box by 12mm HEX head
wrench.(See Fig1)
2. Disassemble the aluminum head, cylinder and piston.(See Fig2)
3. Clean the inside of aluminum head, must be free of metal chip and granular dust (See Fig3)
4. Clean the piston and cylinder. (See Fig 4)
a) Clean the cylinder both inside and outside, especially clean the inside of cylinder, must
be free of metal chip and granular dust. If the conditional, recommend washing by
gasoline.
b) Clean the surface of piston. If the conditional, recommend disassembling the O-ring
and washing the piston by gasoline.
c) At the same time, check the wearing condition of O-ring. If the Outside Diameter (O.D.)
of O-ring is less than the piston O.D., please replace the O-ring to get proper
performance.(Please contact with our authorized dealer to purchase, See the part List).
5. Fill the grease into the aluminum head, please make sure cleaned inside before filling.
a) Recommend the grease from manufacturer site, there is a tube of 60g grease included
the case. (Please contact with our authorized dealer to purchase, See the part List).
Notice：Please Fill the 65g grease into the aluminum head bottom (See Fig 5 and Fig 6)
6. Fill the 12g oil in the cylinder; please make sure it is clean before filling. (See Fig 7)
7. Fill the 5g grease into the piston. please make sure it is clean before filling. (See Fig 8)
8. Assemble back(See Fig 9)
a) Assemble the piston into cylinder, please make sure if the O-ring has been assembled.
b) Assemble the cylinder into aluminum head.
c) Tighten the 4 inner HEX head screws; be careful of no missing spring washer. If tighten
the screws by electrical or pneumatic driver, please check the torque of screw by 12mm
wrench to make sure tightening properly.
d) If the conditional, can put glue on the screw and then screw in(repeat the step above C)
*Suggestion: All above operations to be carried out by our authorized service agent.
Maintenance and inspection
Before do any maintenance, ensure unplug the plug.
1. Inspecting the demolition hammer
Use a dull accessory, such as bull point, cutter, etc., will cause motor malfunction and
efficiency degraded. Replace with a new one when your accessory is abased.
2. Inspecting the mounting screws
Regularly inspect all mounting screws and ensure that they are properly tightened. Any
loose should be tighten immediately, failure to do maybe cause serious hazard.
3. Inspecting the bit retainer
The retainer may become loose due to excessive use. Make sure the bit shank position is
hold securely, if any wear or damage is found, ask the authorized service people to
maintenance.

4. Maintenance the motor
The motor is the heart of the machine, please avoid any damage to the winding, or any
water and oil to wet it.
5. Carbon brush replacements
Carbon brushes are consumableparts, when it becomes worn or"limit worn" it can cause motor
trouble, we use auto-stop carbon brush, it stopped automatically when carbon brush worn out,
at that time,replace a new couple of them as weoffered.
1
φ6 plat washer
Hexagon socket Bolt M6X20
2 Fan cover
3 The cover of carbon bush holder
4 Carbon brush
Remark: after carbon brush replacement, please make sure all of the screws aretightened
enough!
6. Cleaning
Clean the machine regularly with a soft cloth, preferably after each use. Solvent such asgasoline,
thinner, alcohol etc.. These kind of chemical materials are not allowed to use, water or soap are
recommended!
7. Warranty
For the condition of warranty, please refer to the separately provided warranty card.
Environment
Faulty and /or discarded electrical or electronic apparatus have to be collected at the
appropriate recycling location.