BAUMR-AG BAJHTL05A Pro-Grade Electric Jackhammer User Manual

User Manual

[Revision 2.0 November 2023]

READ THIS MANUAL CAREFULLY BEFORE USE – FAILURE TO DO SO MAY RESULT IN INJURY, PROPERTY DAMAGE AND MAY

VOID WARRANTY. • KEEP THIS MANUAL FOR FUTURE REFERENCE. • Products covered by this manual may vary in appearance,

assembly, inclusions, specifications, description, and packaging.

BMJK-24S Series II Electric Demolition Jackhammer

Safety

Safety messages are designed to alert you to possible dangers or hazards that could cause death, injury or

equipment or property damage if not understood or followed. Safety messages have the following symbols:

You WILL be KILLED or

SERIOUSLY INJURED if you

do not follow instructions.

You CAN be KILLED or

SERIOUSLY INJURED if you

do not follow instructions.

You CAN be INJURED if you

do not follow instructions or

equipment damage may occur.

It is important that you read and

understand the instruction manual before

use and keep the manual in a safe place

for future reference. Safety information

presented here is generic in nature –

some advice may not be applicable to

every piece of equipment.

All safety precautions must be observed

to reduce the risk of personal injury when

operating the equipment.

The term “equipment" refers to your

product, be it electrical mains, battery or

petrol engine powered.

IMPORTANT – Handle the equipment

safely and carefully.

BEFORE USE - If you are not familiar

with the safe operation/handling of this

equipment, or are in any way unsure of

any aspect of suitability or correct use it

for your application, you should complete

training conducted by a person or

organization qualified in safe use and

operation of this equipment, including

fuel/electrical handling and safety.

WARNINGS

• Read all safety warnings and all

instructions. Failure to follow

warnings and instructions may result

in electric shock, fire and/or serious

injury.

• Never run a petrol engine in confined

areas.

• Do not operate the equipment in

flammable or explosive

environments, such as in the

presence of flammable liquids, gases

or dust. Engine and equipment may

create sparks or heat that may ignite

vapours, dust etc

• Keep clear of moving parts.

• This equipment may be a potential

source of electric shock if misused.

• Do not operate the equipment if it is

damaged, malfunctioning or is in an

excessively worn state.

• Do not allow others to use the

equipment unless they have read

this manual and are adequately

trained.

• When using the equipment, basic

safety precautions detailed here

must always be followed to reduce

the risk of fire, electric shock,

personal injury and material damage.

• When wiring electrically powered

equipment, follow all electrical and

safety codes.

• Ensure all power sources conform to

equipment voltage requirements and

General Work Area Safety

Work areas should be clean and well it.

Do not operate the equipment if

bystanders, animals etc are within

operating range of the equipment or the

general work area.

Personal Safety

Keep packaging away from children - risk

of suffocation! Operators must use the

equipment correctly. When using the

equipment, consider conditions and pay

due care to persons and property.

Prevent unintentional starting of the

equipment - ensure equipment and power

source switches are in the OFF position

before connecting or moving the

equipment. Do not carry equipment with

hands/fingers touching any controls.

Remove any tools or other items that are

not a part of the equipment from it before

starting or switching on.

Stay alert and use common sense when

operating equipment. Do not overreach.

Keep proper footing and balance at all

times. Do not use equipment when tired

or under the influence of drugs, alcohol or

medication. This equipment is not

intended for use by persons with reduced

physical, sensory or mental capabilities.

You must wear appropriate protective

equipment when operating, servicing, or

when in the operating area of the

equipment to help protect from serious

injury, including eye injury, inhalation of

toxic fumes, burns, and hearing loss.

Always wear eye protection. Protective

equipment such as respirators, non-skid

safety shoes, hard hat, hearing protection

etc should be used for appropriate

conditions. Other people nearby should

also wear appropriate personal protective

equipment. Do not wear loose clothing or

jewellery, which can be caught in moving

parts. Keep hair and clothing away from

the equipment.

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.

General Equipment Use and Care

Do not force the equipment. Use the

correct equipment for your application.

The correct equipment will perform better

and be safer within its design parameters.

Do not use the equipment if the ON/OFF

switch malfunctions – any equipment that

cannot be controlled with the ON/OFF

switch is dangerous and must be

repaired.

Use the equipment and accessories etc.

in accordance with these instructions,

considering working conditions and the

work to be performed. Using the

equipment for operations different from

those intended could result in hazardous

situations.

Before use, inspect the equipment for

misalignment or binding of moving parts,

loose components, damage or any other

condition that may affect its operation. If

damaged, have the equipment repaired

by an authorized service centre or

technician before use.

Always keep the equipment and

accessories (cutting tools, nozzles, bits

etc) properly maintained. Keep the

equipment, controls and handles dry and

free from dirt, oil and grease.

Store the equipment out of reach of

children or untrained persons. To avoid

burns or fire hazards, let the equipment

cool completely before transporting or

storing. Never place the equipment in

places where there are flammable

materials, combustible gases or

combustible liquids etc.

The equipment is not weather-proof, and

should not be stored in direct sunlight, at

high ambient temperatures or locations

that are damp or very humid.

Jackhammer Use and Care

WARNINGS

• Wear ear and eye protection.

• Use all handles supplied with the

equipment.

• Do not touch the bit during or

immediately after operation – the bit

becomes very hot during use and

can cause injury.

• Before using the equipment, confirm

that no electrical cables, gas or

water pipes etc are buried in the

work area.

• Ensure the bit is properly installed

before operating the equipment.

• When using the equipment in an

elevated location, be aware of

persons and objects beneath.

BMJK-24S Series II Electric Demolition Jackhammer

are disconnected before connecting

equipment.

General Service Information

• Have the equipment serviced or

repaired at authorized service

centres by qualified personnel only.

• Replacement parts must be original

equipment manufacturer (OEM) to

help ensure that equipment safety is

maintained.

• Do not attempt any maintenance or

repair work not described in this

instruction manual.

• After use, the equipment and

components may still be hot – allow

the equipment to cool and

disconnect spark plugs and/or

electrical power sources and/or

batteries from it before making

adjustments, changing accessories

or performing repair or maintenance.

• Do not make adjustments while the

equipment is running.

• Perform all service related activities

under suitable conditions, such as a

workshop etc.

• Replace any worn, damaged or

missing warning labels immediately.

• Do not clean equipment with

solvents, flammable liquids or harsh

abrasives.

General Electrical Safety

• Inspect electrical equipment,

extension cords, power bars, and

electrical fittings for damage or wear

before each use. Repair or replace

damaged equipment immediately.

• Ensure all power sources conform to

equipment voltage requirements and

are disconnected before connecting

or disconnecting equipment.

• When wiring electrically powered

equipment, follow all electrical and

safety codes.

• Always use a Residual Current

Device (RCD) (GFCI) / Earth

Leakage Circuit Breaker / Safety

Switch when operating this item

(electrical items only).

• High voltage / high current power

lines may be present. Use extreme

caution to avoid contact or

interference with power lines.

Electrical shock can be fatal.

General Electrical Safety

• Electrically grounded equipment

must have an approved cord and

plug and be connected to a

grounded electrical outlet.

• Do NOT bypass the ON/OFF switch

and operate equipment by

connecting and disconnecting the

electrical cord.

• Do NOT use equipment that has

exposed wiring, damaged switches,

covers or guards.

• Do NOT use electrical equipment in

wet conditions or in damp locations.

• Do NOT use electrical cords to lift,

move or carry equipment.

• Do NOT coil or knot electrical cords,

and ensure electrical cords are not

trip hazards.

BMJK-24S Series II Electric Demolition Jackhammer

Table of Contents

Safety ................................................................................................................................................ 2

Parts Identification ........................................................................................................................... 5

Operation .......................................................................................................................................... 6

Changing Bits ............................................................................................................................................... 6

Adjusting the Secondary Handle .................................................................................................................. 6

Using the Jackhammer ................................................................................................................................ 7

Maintenance ..................................................................................................................................... 8

Maintenance Schedule ................................................................................................................................. 8

Hammer Case Lubrication ........................................................................................................................... 8

Motor Brushes .............................................................................................................................................. 9

Bits ............................................................................................................................................................... 9

Fasteners ..................................................................................................................................................... 9

Troubleshooting ............................................................................................................................. 10

Specifications ................................................................................................................................. 10

BMJK-24S Series II Electric Demolition Jackhammer

Parts Identification

NOTE: Appearances may slightly vary with your product and the product pictured above. Additional

parts and accessories may include various bits (chisel etc), basic tools, spare motor brushes, oil

bottle, basic safety equipment etc.

No. Name No. Name

1

Tool Body / Hammer Case

7

Motor Housing

2

Handle

8

Secondary Handle

3 Trigger 9 Bit Holder

4 Trigger Lock 10 Bit Locking Pin

5 Hammer Case Oil Sight Glass (where applicable) 11 Power Cord

6 Motor Brush Cover (2)

8

10

9

4

11

5

7

2

1

3

6

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BMJK-24S Series II Electric Demolition Jackhammer

Operation

Changing Bits

Use compatible bits only – see Specifications. Using incorrect or non-compatible bits

may render the tool dangerous. • Always ensure that the inserted bit is properly

locked before use. When properly locked it should not be possible to pull the bit from the bit holder. •

Use caution when changing bits as they can be very hot after use, sharp etc. Appearances may

slightly differ with your product and the product pictured in this manual for demonstration purposes.

1. Pull the locking pin (A) out

and rotate it to the "open"

position (B), then release

the locking pin.

2. Lightly lubricate (oil or

grease) the bit (C) in areas

(D) and (E).

3. Insert the bit fully into the

bit holder (F), ensuring that

the flat on the bit (D) is

aligned with the locking pin.

4. Pull the locking pin (A) out and rotate it to the "close" position (G), then release the locking pin.

Adjusting the Secondary Handle

1. Loosen (rotate left) the 2 screws (A) with the supplied Allen

key.

2. Rotate the secondary handle (B) to a comfortable position.

3. Tighten (rotate right) the 2 handle screws.

B

A

B

E

D

C

F

G

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BMJK-24S Series II Electric Demolition Jackhammer

Using the Jackhammer

Before connecting power to the tool, ensure

that the trigger lock is disengaged. • Use extra

caution when using the trigger lock as the tool will remain

running without the trigger being held in. • When operating the

tool, there is no need to push down or lean on it – the weight of

the tool is sufficient, and additional pressure will not improve

tool performance. • Hold the tool with force just sufficient to

counter the hammer action. • On occasion, it may be necessary

to strike the tip of the bit against the work surface to activate

the hammer action. This is not due to malfunction – it means

that the no-load hammer safety mechanism is working. The

mechanism is to prevent the tool hammer from activating if the

tool is not actually being used.

NOTE: Appearances may slightly differ with your product and

the product pictured in this manual for demonstration

purposes.

Place the tip of the bit against the work surface, then pull the trigger (A) to start the tool. Depending on the

work to be performed and the type of bit being used, vary the angle of the tool in relation to the work surface

to help the bit "dig in" to the work surface.

The tool features a "trigger lock" that, when used, will keep the tool running when the trigger is released. To

use the trigger lock, pull the trigger (the tool starts) and press in the lock pin (B), then release the trigger (the

tool continues running). To disengage the trigger lock, pull the trigger in fully (this disengages the lock pin),

then release the trigger.

A

B

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BMJK-24S Series II Electric Demolition Jackhammer

Maintenance

Always disconnect mains electrical power from the tool before performing any

maintenance activities. • Do not have the tool running during inspection and

maintenance. • The tool and bits should be cool enough to touch before performing maintenance

activities. • Some maintenance activities described may be beyond the scope of some users. For

procedures that you are not comfortable with or have the tools or experience for, have the unit

serviced by a service centre or qualified technician. Appearances may slightly differ with your

product and the product pictured in this manual for demonstration purposes.

The maintenance schedule below specifies preventative maintenance checks and necessary maintenance

tasks and how often they should be performed.

Maintenance Schedule

Frequency – Whichever Comes First

Component/Task Every Use

First Month or

20 Hours Use

Every 3 Months

or 50 Hours Use

Every 6 Months

or

100 Hours Use

Every Year or

300 Hours

Use

Hammer Case Oil

(where applicable)

Check Replace Replace

Oil Leaks

Check/repair

as necessary

Motor Brush Clean and replace as necessary

Fasteners

Check/tighten

as necessary

Hammer Case Lubrication

The hammer case components (gears etc) are lubricated by either oil or grease.

Lubrication is essential to normal operation of the tool. For machines that use oil,

the machine is equipped with an oil sight glass (A). For machines that use

grease, there is no oil sight glass and no maintenance is necessary. For oil

lubricated machines, the oil level must be maintained at an acceptable level at all

times, and should be changed every 50 hours of use. Suitable oil types are SAE

75W to 90W gear oil. To check oil level:

1. Hold the tool so it is vertical – this is essential for getting a correct reading.

2. Check the oil level in the oil sight glass (A). If the oil level is at or near the top

of the sight glass (B), the level is acceptable. If the oil is not visible or the

level is at or near the bottom of the sight glass (C), add oil.

To add oil:

1. Lay the tool flat so the oil sight glass is facing up.

2. Clean the tool around the oil sight glass and plate to help prevent any dirt or other material entering the

hammer case.

3. Remove the oil sight glass (rotate left) using a suitable spanner. Alternatively, remove the 4 screws

securing the oil sight glass plate to the tool and remove the plate (with sight glass attached). Ensure that

any seals (O-rings etc) are retained.

4. Add oil to the tool.

5. Re-install the oil sight glass or plate and seals, then check oil level and adjust as necessary.

A

C

B

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BMJK-24S Series II Electric Demolition Jackhammer

To change oil:

1. Remove the oil sight glass or plate as described above.

2. Turn the tool over and drain the oil into a suitable container. It may help hold the tool at various angles to

drain as much oil as possible. Dispose of used oil according to regulations and in an environmentally

responsible manner.

3. Lay the tool flat so the oil sight glass is facing up.

4. Add oil to the tool.

5. Re-install the oil sight glass or plate and seals, then check oil level and adjust as necessary.

Motor Brushes

The electric motor uses 2 carbon "brushes" in order to function. The brushes wear as a result of use – this is

normal, and some tools may come with replacement brushes. If the brushes are allowed to wear past the

acceptable limit, the motor may produce less power, operate intermittently, or not operate at all. To check

brushes:

1. Remove the screws (A) (rotate left) securing the motor brush cover (B) on both sides of the motor

housing (C) and remove the covers. Ensure that any seals (O-rings etc) are retained.

2. Clean the tool in the area under the brush covers to help prevent any dirt or other material entering the

motor housing.

3. Use a coin or wide flat blade screwdriver to remove the brush cap (D).

4. Pull the brush (E) from the cavity and check the length of the carbon section (F). If the brush length is

close to the minimum acceptable limit (7mm), replace the brush – always replace both brushes at the

same time.

5. Insert the brush into the cavity – the brush

has 2 prongs on the electrical conductor (G) –

ensure these sit in the slots (H).

6. Re-install the brush cap (rotate right. Do

not over-tighten).

7. Re-install any seals and the brush covers

and secure using the screws (rotate right).

Bits

Regularly inspect bits for excessive wear, blunting, cracks or chips. Using a blunt bit will reduce tool

efficiency, and may lead to other problems, such as premature wear in the gearbox or motor brushes etc.

For limited wear or damage at the tip, remove the worn section using a suitable grinder – remove the minimal

amount of material only and be sure to shape the tip correctly. If wear/damage is extensive – replace the bit.

Fasteners

The tool generates a lot of vibration, which may cause some fasteners to loosen over time. Regularly inspect

all visible fasteners for tightness, and tighten as necessary using suitable tools. If the tool vibrates

excessively during use, stop using the tool and check all fasteners before continuing

Minimum

= 7mm

A

B

C

D

E

F

G

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BMJK-24S Series II Electric Demolition Jackhammer

Troubleshooting

Always disconnect mains electrical power from the tool before performing any

maintenance activities. • Do not have the tool running during inspection and

maintenance. • The tool and bits should be cool enough to touch before performing maintenance

activities. • Some maintenance activities described may be beyond the scope of some users. For

procedures that you are not comfortable with or have the tools or experience for, have the unit

serviced by a service centre or qualified technician. • If problems persist after following all suggested

actions, contact a service centre or qualified technician.

The following information may assist in identifying a problem and rectifying it.

Tool not running or low on power.

Possible Fault Action

No electrical supply Check that the tool is connected to a 240VAC mains electrical supply and that the supply is

available.

Motor brushes worn Check motor brushes are within tolerance (minimum length = 7mm). Replace if necessary.

Motor or trigger damaged Repair or replace damaged parts.

No hammer action or poor tool performance.

Possible Fault Action

No-load hammer safety active Run tool and strike the bit against the work surface to activate hammer action.

Incorrect bit or blunt Use correct bit for the job. Check bit tip and sharpen or replace if necessary.

Hammer case oil low Check oil level and replace or top up as necessary.

Hammer mechanism damaged Repair or replace damaged parts.

Specifications

Motor Type Induction Commercial Grade

Operating Voltage 240V/10A

Power 2400W

Beats per minute @ Maximum Load 1900 BPM

Tool Mount Size Hexagonal Chisel 30mm

Gear Oil 75W to 90W

Power Plug 10A Australian Standard

Power Cord 300cm

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BMJK-24S Series II Electric Demolition Jackhammer

Some experts believe the incorrect or prolonged use of almost any product could cause serious

injury or death. For information that may reduce your risk of serious injury or death, consult the

points below and additionally, the information available at www.datastreamserver.com/safety

• Consult all documentation, packaging and product

labelling before use. Note that some products feature

online documentation which should be printed and kept

with the product.

• Check product for loose / broken / damaged / missing

parts, wear or leaks (if applicable) before each use.

Never use a product with loose / broken / damaged /

missing parts, wear or leaks (if applicable).

• Products must be inspected and serviced (if applicable)

by a qualified specialist every 6 months assuming

average residential use by a person of average weight

and strength, above average technical aptitude, on a

property matching average metropolitan specification.

Intended use outside these guidelines could indicate

the product is not suitable for intended use or may

require more regular inspection or servicing.

• Ensure all possible users of the product have

completed an industry recognized training course

before being given access to the product.

• The product has been supplied by a general merchandise retailer that

may not be familiar with your specific application or your description

of the application. Be sure to attain third-party approval for your

application from a qualified specialist before use regardless of prior

assurances by the retailer or its representatives.

• This product is not intended for use where fail-safe operation is

required. As with any product (take an automobile, aircraft, computer

or ball point pen for example), there is always a small chance of

technical issues that needs to be repaired or may require

replacement of the product or a part. If the possibility of such failure

and the associated time it takes to rectify could in any situation

inconvenience the user, business or employee then the product is not

suitable for your requirements. This product is not for use where

incorrect operation or a failure of any kind, including but not limited to

a condition requiring product return, replacement, service by a

technician or replacement of parts could cause a financial loss, loss

of employee time or an inconvenience requiring compensation.

• If this item has been purchased in error after considering the points

above, simply contact the retailer directly for details of their returns

policy, if required.

ideas, diagrams or images may be reproduced or transmitted in any form or by any means, electronic or

mechanical, including photocopying, scanning or recording, or any information storage and retrieval system,

without express permission or consent from the publisher.

BAUMR-AG BAJHTL05A Pro-Grade Electric Jackhammer

Product's Documents

Product manual

Specifications

BAUMR-AG BAJHTL05A Questions and Answers