WIPIN BW20 User manual

BW20/BW20S
HANDHELD
HYDRAULIC BREAKERS
USER MANUAL
Safety, Operation and Maintenance

1
TABLE OF CONTENTS
SAFETY GUIDELINE················································································ 2
i SAFETY PRECAUTIONS········································································2
ii SAFETY SYMBOLS·············································································· 3
iii LOCAL SAFETY REGULATIONS····························································3
TOOL STICKERS & TAGS.................................................................................................4
HYDRAULIC HOSE REQUIREMENTS·························································5
HYDRAULIC EQUIPMENT·········································································6
OPERATION····························································································7
i PREPARATIONS BEFORE OPERATION··················································· 7
ii CHECK POWER SOURCE·····································································7
iii CHECK TOOL····················································································· 7
iv CHECK TIGGER················································································· 7
v CONNECT HOSES··············································································· 7
CHARGING THE ACCUMULATOR······························································ 8
TROUBLESHOOTING············································································· 10
SPECIFICATIONS·················································································· 11
ACCESSORIES······················································································12
BW18 T-HANDLE ILLUSTRATION····························································· 12
BW18 T-HANDLE PARTS LIST··································································13
BW18S ANTI-VIB ILLUSTRATION····························································· 16
BW18S ANTI-VIB PARTS LIST··································································17
WARRANTY·························································································· 20
MAINTENANCE RECORDS····································································· 21

2
！DANGER
SERIOUS INJURY OR DEATH COUL
RESULT FROM THE IMPROPER REPAI
OR SERVICE OF THIS TOOL.
SAFETY
D
R
Tool operators and maintenance personnel must always comply with the safety
precautions given in this manual and on the stickers and tags attached to the
equipment.
Review this manual carefully before operating the tool and before performing
general maintenance or repairs.
Supervising personnel should develop additional precautions relating to the specific
work area and local safety regulations. If so, place the added precautions in the
space provided on page 4
SAFETY PRECAUTIONS
This power unit will provide safe and dependable service if operated in accordance with the
instructions given in this manual. Read and understand this manual and any stickers and
tags attached to the Power Unit. Failure to do so could result in personal injury or
equipment damage.
• Operator must start in a work area without bystanders. The operator must be familiar with
all prohibited work areas such as excessive slopes and dangerous terrain conditions.
• Establish a training program for all operators to ensure safe operation.
• Do not operate the tool unless thoroughly trained or under the supervision of an instructor.
• Always wear safety equipment such as goggles, gloves, ear, head, and breathing
protection, and safety shoes at all times when operating the tool.
• Do not inspect, carry or clean the tool while the hydraulic power source is connected.
Accidental engagement of the tool can cause serious injury.
• Be sure all hose connected tightly..
• Do not operate the tool at oil temperatures above 140 °F/60 °C. Operation at higher oil
temperatures can cause operator discomfort and may damage the tool. Never come in
contact with the tool bit, the bit can get hot.
• Do not operate a damaged, improperly adjusted, or incompletely assembled tool.
• Do not weld, cut with an acetylene torch, or hardface the tool bit.
• To avoid personal injury or equipment damage, all tool repair, maintenance and service
must only be performed by authorized and properly trained personnel.

3
SAFETY SYMBOLS
!DANGER
This is the safety alert symbol. It is used to alert you to potential personal injury
hazards. Obey all safety messages that follow this symbol to avoid possible injury
or death.
!WARNING
This is the safety alert symbol. It is used to alert you to potential personal injury
hazards. Obey all safety messages that follow this symbol to avoid possible injury
or death.
!CAUTION
This is the safety alert symbol. It is used to alert you to potential personal injury
hazards. Obey all safety messages that follow this symbol to avoid possible injury
or death.
Safety symbols and signal words are used to emphasize all operation, maintenance and
repair actions which, if not strictly followed, could result in a life-threatening situation, bodily
injury or damage to equipment
LOCAL SAFETY REGULATIONS
Enter any local safety regulations here. Keep these instructions in an area accessible to
the operator and maintenance personnel.

4
TOOL STICKERS & TAGS
• Safety labels and tags stick to all the equipment before they leave the factory
• Do not exceed the rated limits of the equipment or use the equipment for applications
beyond its design capacity
• The information listed on the stickers shown, must be legible at all times. Replace decals
if they become worn or damaged. A new tag may be purchased from ourcompany.
DANGER
1. Failure to use hydraulic hose labeled and certified as non-conductive when using
hydraulic tools on or near electrical lines may result in death or serious injury. Before using
hose labeled and certified as nonconductive on or near electric lines be sure the hose is
maintained as non-conductive. The hose should be regularly tested for electric current
leakage in accordance with your safety department instructions.
2. A hydraulic leak or burst may cause oil injection into the body or cause othersevere
personal injury.
a. Do not exceed specified flow and pressure for this tool. Excess flow or pressure may
cause a leak or burst.
b. Do not exceed rated working pressure of hydraulic hose used with this tool. Excess
pressure may cause a leak or burst.
c. Check tool hose couplers and connectors daily for leaks. Do not feel for leaks with
your hands. Contact with a leak may result in severe personal injury. Important.
d. Do not lift or carry tool by the hoses. Do not abuse hose. Do not use kinked, torn or
damaged hose.
3. make sure hydraulic hoses are properly connected to the tool before pressuring system.
System pressure hose must always be connected to tool “in” port. System return hose
must always be connected to tool “out” port. Reversing connections may cause reverse
tool operation which can result in severe personal injury.
4. do not connect open-center tools to closedcenter hydraulic systems. This may result in
loss of other hydraulic functions powered by the same system and/or severe personal
injury.
5. bystanders may be injured in your work area. Keep bystanders clear of your work area.
6. wear hearing, eye, foot, hand and head protection.
7.To avoid personal injury or equipment damage,all tool repair maintenance and service
must only be performed by authorized and properly trained personnel.

5
HYDRAULIC HOSE REQUIREMENTS
TYPES OF HYDRAULIC HOSE
There are three types of hydraulic hose that meet this requirement. They are:
1, Certified non-conductive
2, Wire-braided (conductive)
3, Fabric-braided (not certified or labeled non-conductive)
Hose 1 can be used near electrical conductors
Hose2,3 must never be used near electrical conductors.
THE TAG SHOWN BELOW IS ATTACHED TO CERTIFIED NON-CONDUCTIVE HOSE
DANGER
1. Use this hydraulic hose on or near electric lines.
2. For proper and safe operation make sure that you have been properly trained in
correct procedures.
3. Do not exceed hose working pressure or abuse hose. Keep hose as far away as
possible from body and do not permit direct contact during use.
4. Handle and route hose carefully to avoid kinking, cutting, or contact with high
temperature surfaces. Do not use if kinked. Do not use hose to do not remove this tag
pull or lift tools, power units, etc.
5. Check entire hose for cuts cracks leaks abrasions, bulges, or damage to couplings if
any of these conditions exist, replace the hose immediately. Never use tape or any
device to attempt to mend the hose.
6. After each use store in a clean dry area.
THE TAG SHOWN BELOW IS ATTACHED TO CONDUCTIVE HOSE
DANGER
1. Do not use this hydraulic hose on or near electric lines.
2. For proper and safe operation make sure that you have been properly trained in
correct procedures.
3. Do not exceed hose working pressure or abuse hose. Keep hose as far away as
possible from body and do not permit direct contact during use.
4. Handle and route hose carefully to avoid kinking, cutting, or contact with high
temperature surfaces. Do not use if kinked. Do not use hose to do not remove this tag
pull or lift tools, power units, etc.
5. Check entire hose for cuts cracks leaks abrasions, bulges, or damage to couplings if
any of these conditions exist, replace the hose immediately. Never use tape or any
device to attempt to mend the hose.
6. After each use store in a clean dry area.
Working Pressure
All hydraulic hose must have at least a rated minimum working pressure equal to the
maximum hydraulic system relief valve setting.

6
HYDRAULIC EQUIPMENT
Hydraulic system Equipment
Notice
Hereby the safeguard procedures of Hydraulic Equipment
1. Store in a clean dry area.
2. Supply 26~34lpm when the pressure is 140 bar on hydraulic system.
3. Do not over the working-pressure range, And the pressure of safe value must on
145~155bar.
4. Always keep critical tool markings, such as labels and warning stickers legible.
5. Back pressure value can not exceed 17bar.
6. Always replace hoses, couplings and other parts with replacement parts recommended
by WIPIN Hydraulic Tools.
7. Supply hoses must have a minimum working pressure rating of 2500 psi/175 bar.
8. There must be a filter, it can filter the min size 25μm impurity.
9. Establish a training program for all operators to ensure safe operation.
10. Be sure all joint are dry, especially before work.
11. On the request working temperature, the viscosity of hydraulic oil must between
20~82cts.
12. The hydraulic circuit control valve must be in the “OFF” position when coupling or
uncoupling the tool. Wipe all couplers clean before connecting.
13. The min inter diameter of hose is 12mm, biggest length is 15m. Or 16mm and 30m.
14. Check all the Joint installed tightly or not, especially before work.

7
OPERATION
PRE-OPERATION PROCEDURES
1. Be sure the hydraulic breakers undamaged, no chips.
CHECK POWER SOURCE
1. Using a calibrated flowmeter and pressure gauge, check that the hydraulic power source
develops a flow of 15–22 lpm at 105–140 bar.
2. Make certain the hydraulic power source is equipped with a relief valve set to open at
155 bar maximum.
3. Be sure the hydraulic oil circuit suit the tools requirement
CHECK TOOL
1. Be sure all the tools composed correctly
2. Be sure no oil leakage
3. All the assembly part must be clear, and be sure all the assembly and connect tight.
CHECK TRIGGER
Be sure the trigger work smoothly
CONNECT HOSES
1. Wipe all hose couplers with a clean, lint-free cloth before making connections.
2. Connect the hoses from the hydraulic power source to the tool fittings or quick
disconnects. It is a good practice to connect return hoses first and disconnect them last to
minimize or avoid trapped pressure within the tool.
3. Observe flow indicators stamped on hose couplers to ensure that fluid flow is in the
proper direction. The female coupler on the tool hose is the inlet coupler.
NOTE:
If uncoupled hoses are left in the sun, pressure increase within the hoses may make them
difficult to connect. When possible, connect the free ends of the hoses together.
OPERATION PROCEDURES
1. Observe all safety precautions.
2. Move the hydraulic circuit control valve to the ON position to operate the tool.
3. Install the appropriate tool bit for the job.
4. Place the bit firmly on the surface to be broken.
5. Squeeze the trigger to start the breaker.
NOTE:
Partially depressing the trigger allows the tool to run at slow speed. Slow-speed operation
permits easier starting of the tool bit into the work surface.
COLD WEATHER OPERATION
If the breaker is to be used during cold weather, preheat the hydraulic fluid at low engine
speed. When using the normally recommended fluid, fluid temperature should be at or
above 50 °F/10 °C (400 ssu/82 centistokes) before use. Damage to the hydraulic system or
breaker can result from use with fluid that is too viscous or thick.

8
CHARGING THE ACCUMULATOR
Charging Tools
There are two parts
1, control assembly
2. ACCUMULATOR TESTER
3. Connection pic

9
Pic 1
Pic 2
Steps
1.connect Nitrogen tank and charging assembly tightly, check pic 1
2.connect accumulator tester on hydraulic tools.
3. clockwise rotate the gauge, connect the chuck of the charging assembly to the charging
valve on the accumulator tester once the gauge reaches maximum.
4. Open the nitrogen tank, Adjust the snub valve to a charging pressure
5.Check the data of gauge, got the proper charge pressure.
6. unscrew the entire tester assembly from the accumulator charging valve, turn the gauge
fully counterclockwise to ensure that the stem inside the chuck is completely retracted.
Then turn the gauge fully clockwise, and watching the pressure gauge, if the data are not
proper, perform steps 3 through 4.
7. Store all the tools properly.
Pic 3 Pic 4