Baumr-ag Bmjk-24s User manual

Electric Jackhammers

User Manual

[Revision 3.0 June 2017]

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.

Bäumr-AG Electric Jackhammers

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

are disconnected before connecting

equipment.

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.

Bäumr-AG Electric Jackhammers

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.

Bäumr-AG Electric Jackhammers

Table of Contents

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

Applicable Models .............................................................................................................................5

Parts Identification.............................................................................................................................6

Operation ............................................................................................................................................7

Changing Bits.............................................................................................................................................7

Adjusting the Secondary Handle................................................................................................................7

Using the Jackhammer ..............................................................................................................................8

Maintenance .......................................................................................................................................9

Maintenance Schedule............................................................................................................................... 9

Hammer Case Lubrication .........................................................................................................................9

Motor Brushes.......................................................................................................................................... 10

Bits........................................................................................................................................................... 10

Fasteners................................................................................................................................................. 10

Troubleshooting...............................................................................................................................11

Specifications...................................................................................................................................11

Bäumr-AG Electric Jackhammers

Applicable Models

This manual applies to the following Bäumr-AG electric jackhammers:

BMJK-24S / JHKELEBMRB24S 2400W

BMJK-22P/ JHKELEBMRB22P 2200W

BMJK-24S / JHKELEBMRA24S 2400W

BMJK-22S / JHKELEBMRB22S 2200W

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Bäumr-AG Electric Jackhammers

Parts Identification

NOTE: 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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Bäumr-AG Electric Jackhammers

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.

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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Bäumr-AG Electric Jackhammers

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.

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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Bäumr-AG Electric Jackhammers

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.

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.

To change oil:

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

A

C

B

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Bäumr-AG Electric Jackhammers

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

H

G

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Bäumr-AG Electric Jackhammers

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

Electrical Requirements 240VAC / 50Hz

Hammer Force 45J – 1400BPM

Weight Approximately 17kg (tool only)

Bit Mount Hitachi 30mm Hexagonal "quick change"

Bit Length Approximately 410mm

Bit Compatibility Bäumr‐AG 30mm Hex, Hitachi PH65 PH65SA H65SB2 H70SA,

Makita HM1303 HM1317C HM1307C HM1304 HR1400 HR1317C,

ROK 150‐36‐551, TWM, Millers Falls PT4370, Z1G‐DW‐45 and more

Oil Type (Hammer Case) SAE 75W to 90W gear oil

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Bäumr-AG Electric Jackhammers

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 BMJK-24S User manual

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