Baumr-AG BMJK-24S, BMJK-22P, BMJK-22S User Manual

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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

It is important that you read and

General Work Area Safety

Use the equipment and accessories etc. in

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.

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 electr ical and safety codes.

• Ensure all power sources conform to equipment voltage requirements and are disconnected before connecting equipment.

You CAN be KILLED or SERIOUSLY INJURED if you do not follow instructions.

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 start ing 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.

You CAN be INJURED if you do not follow instructions or equipment damage may occur.

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 centr e 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 maintaine d.

• 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

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Applicable Models

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

BMJK-24S / JHKELEBMRB24S 2400W

BMJK-24S / JHKELEBMRA24S 2400W

BMJK-22P / JHKELEBMRB22P 2200W

BMJK-22S / JHKELEBMRB22S 2200W

Bäumr-AG Electric Jackhammers

10 9 4

11 5 7 2 1 3 6

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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

Handle

Trigger

Trigger Lock

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

6 Motor Brush Cover (2)

Secondary Handle

Bit Holder

Bit Locking Pin

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A A B

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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.

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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.

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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

First Month or

Component/Task Every Use

Hammer Case Oil (where applicable)

Oil Leaks

Motor Brush Clean and replace as necessary

Fasteners

Check Replace Replace

Check/repair

as necessary

Check/tighten

as necessary

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 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.

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Minimum

C D E

F H G

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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).

= 7mm

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

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Troubleshooting

Always disconnect mains electrical power from the tool before performing any maintenance

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

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

Motor or trigger damaged Repair or replace damaged parts.

available.

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

Hammer Force

Weight

Bit Mount

Bit Length

Bit Compatibility

Oil Type (Hammer Case)

240VAC / 50Hz

45J – 1400BPM

Approximately 17kg (tool only)

Hitachi 30mm Hexagonal "quick change"

Approximately 410mm

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

SAE 75W to 90W gear oil

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 assum ing 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.

©2017 Baumr-AG. All rights reserved. No part of this document, including descriptive content, concepts, 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, BMJK-22P, BMJK-22S User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Safety

Applicable Models

Parts Identification

Operation

Changing Bits

Adjusting the Secondary Handle

Using the Jackhammer

Maintenance

Maintenance Schedule

Hammer Case Lubrication

Motor Brushes

Bits

Fasteners

Troubleshooting

Specifications