BAUMR-AG CONMIXBMRA2K0 220L Portable Electric Concrete User Manual

User Manual

[Revision 4.0 October 2022]

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.

135L Concrete Mixer

Safety

Always wear a dust mask to filter any micro-particles that may spread when opening

materials. Wear protective eyewear/goggles to prevent materials hitting or entering eyes.

Wear hearing protection.

Understand Your Mixer

Read and understand the owner’s manual and labels affixed to the mixer. Learn its application and

limitations as well as the specific potential hazards peculiar to it. Become familiar with the controls before

operating the equipment.

Be Aware of Surroundings

Do not operate the mixer while under the influence of drugs, alcohol, or medication that could affect your

ability to use it properly. Be alert at all times.

Avoid Dangerous Conditions

Make sure the work area is a suitable size. Keep the work area clean and well lit. Keep area around the

mixer clear of obstructions, grease, oil, rubbish and other debris. Only use or operate the mixer on solid, flat,

level ground that can support the weight of the mixer and its load. Do not attempt to move the mixer when

loaded and/or in operation. This mixer is intended for mixing concrete, mortar and plaster – it is not suitable

for mixing flammable or explosive substances. Do not use it in areas where fumes from paint, solvents or

flammable liquids are present.

Be Aware of Product Limitations

Always use the equipment within its rated capacity. Do NOT start the motor with the drum loaded. Do

NOT switch the mixer off while the drum is loaded. Do NOT use the mixer for purposes for which it was

not intended. The mixer is not to be towed behind a vehicle.

Maintain Your Mixer

Clean the mixer immediately after use. Keep the mixer clean for best and safest performance. When

maintaining the mixer, only the manufacturer’s original replacement parts may be used.

Protect the Environment

Take left over materials to an authorized collection point or follow the stipulations in the country where the

mixer is used. Do not discharge waste materials into drains, soil or water.

General Safety

•

Seek medical advice if you have any medical condition that may be affected by the operation and

manual handling of the concrete mixer and/or equipment.

•

Ensure that the equipment is suitable for your needs and working environment.

•

Ensure that the equipment is assembled and used according to instructions.

•

Check controls and any safety devices for proper response.

•

Wear appropriate personal protective equipment, and ensure it is compliant with applicable standards.

•

Tie back long hair or wear appropriate headwear to prevent hair becoming tangled in moving parts.

•

Always operate in a clear hazard free work area.

•

Keep all children and animals away from the equipment at ALL times.

•

Ensure that you have clear access and egress to the work area whilst on the job.

•

Ensure the work environment is well lit with all aspects of the job easily seen and discernible.

•

Make sure equipment is operated on level ground.

135L Concrete Mixer

•

Maintain proper footing and balance at all times and avoid damp, wet or slippery surfaces.

•

Check tyre pressure (applicable models). Tyres may appear to be sufficiently inflated while empty, but

when bowl is full, under-inflated tyres make emptying into a barrow difficult and dangerous.

•

Avoid twisting your torso when shovelling material into the bowl (turn with your feet).

•

Do not over exert when lifting and transferring material into the bowl.

•

Take care to immediately wash off concrete that comes into contact with skin.

•

Do NOT operate equipment without safety guards correctly fitted.

•

Do NOT operate equipment if under the influence of alcohol or drugs, which may cause loss of

concentration

•

Do NOT wear loose clothing, neckties, rings, bracelets or other jewellery which may get caught in the

moving parts

•

Do NOT place tools or hands inside the rotating bowl.

•

Do NOT leave the equipment running whilst unattended.

•

Do NOT work alone.

Electrical Safety

•

Always use earth leakage protection such as a Residual Current Device (RCD).

•

Make sure extension leads to electric units are placed clear of water and other conductive or hazardous

materials. Keep cord away from heat, oil and sharp edges.

•

Ensure that when using extension cords, they are knotted at the connectors (so they do not

unexpectedly cut power) and ensure ground lying or hanging cables are well signed.

•

Ensure that electrical rating of all equipment is compatible; that is, 10A plugs for 10A outlets etc.

•

Ensure that the electric mixer unit is turned "off" at the power supply outlet before disconnecting or

connecting cables.

•

Do NOT use the unit if the cord and/or extension cord insulation is cut, cracked, worn or damaged.

•

Do NOT lock switches in "on" position with tape, wire or by any other means.

•

Do NOT attempt to move or lift the unit by the electrical cord, or yank the cord to disconnect it.

•

Do NOT operate electric units in rain or wet conditions.

135L Concrete Mixer

Table of Contents

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

Assembly .......................................................................................................................................... 5

Frame ........................................................................................................................................................... 6

Lower Drum .................................................................................................................................................. 6

Mixing Blades ............................................................................................................................................... 7

Upper Drum .................................................................................................................................................. 7

Tipping Wheel .............................................................................................................................................. 8

Transmission Case ...................................................................................................................................... 8

Spare Parts ....................................................................................................................................... 9

Operation ........................................................................................................................................ 10

Drum Tilting ................................................................................................................................................ 10

Loading and Emptying ............................................................................................................................... 10

Mixing ......................................................................................................................................................... 10

Cleaning ..................................................................................................................................................... 11

Maintenance ................................................................................................................................... 11

Wiring Diagram .............................................................................................................................. 11

135L Concrete Mixer

Assembly

Two or more people assisting in the assembly is recommended.

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135L Concrete Mixer

Frame

1. With a split pin inserted into the inner holes

in each stub axle, place a flat washer, then a

wheel followed by another flat washer. Insert

another split pin into the axle holes outside

each flat washer. Bend each side of the pins

outward so they do not fall out.

2. With the frame lying on its side, attach the

support leg. Insert two M8x70 hex bolts

through the holes from one side, then flat

washers, lock washers and nuts from the

other side. Also screw a M8x55 hex bolt with

lock and flat washers to the nut on the frame.

3. Turn the frame over and attach the axle bracket with wheels in the same manner.

4. Make sure all bolts and nuts are tightened.

Lower Drum

1. Slide the bearing block on the shaft. Hold it in

place with the circlip.

2. Carefully set the lower drum with support arm

onto the side supports of the stand as shown,

so that the bearing blocks slot into the channels

provided by the side supports. The larger

diameter shaft should be at the leg end of the

stand.

3. At each side, line up the holes in the side

support with those in the bearing block and

insert a M8x65 hex bolt from one side, then a

flat washer, lock washer and nut from the other

side. Tighten with a suitable spanner.

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135L Concrete Mixer

Mixing Blades

1. Mount the mixing blades inside the lower drum

loosely as shown - two holes are provided at the

base of the drum into which a M8x16 bolt is

inserted from the outside. A leather washer, flat

washer, lock washer and a nut should be

screwed on loosely on the inside. The leather

washer should be placed under the blade down

against the drum.

Alignment arrows are labelled on the upper

and lower drums – if you have any difficulty

in correctly positioning the mixing blades, it is helpful

if you temporarily mount the upper drum on top of

the lower drum, rotating it so that the arrows line up.

Upper Drum

1. Place the upper drum onto the lower drum,

making sure to align the alignment arrows and

drum mounting holes.

2. Screw a M8x16 bolt with lock and flat washers

into each threaded hole in the rim/ring gear.

Make sure the tightening process is carried out

progressively.

3. Secure the mixing blades to the upper drum by

inserting two M8x16 screws, from the outside

through the holes in the drum. Place a leather

washer between the drum and blade. Secure the

mixing blade on the inside using a flat washer,

spring washer and nut.

4. Finally, ensure top and bottom mixing blade

mountings are tight.

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135L Concrete Mixer

Tipping Wheel

1. Slide the locking plate over the large diameter shaft

at the leg end of the frame with the rim facing

inwards as shown. Secure with two M8x25 bolts,

nuts, lock and flat washers.

2. The spring is clamped in its holder by a U-shaped

plate. Slide the wheel over the larger diameter shaft

until the holes in the bracket line up with the hole

drilled. Insert a M10x60 bolt and screw on a nut with

flat and lock washers from the other side. Screw the

nut up against the bracket firmly, but not so tightly so

as to prevent the wheel from pivoting about the bolt.

Free the spring by removing the U-shaped plate.

The wheel must pivot about the bolt so that the

lugs on the bracket can be engaged or

disengaged from the slots in the locking plate.

Transmission Case

1. Lining up the keyways, slide the transmission case

over the pinion shaft. Secure the case to the frame

with four M8 nuts.

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135L Concrete Mixer

Spare Parts

Spare parts available for purchase, scan QR code below:

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135L Concrete Mixer

Operation

Drum Tilting

The spring-loaded tipping bar with locking lug

provides an easy positive control of the drum

which can be locked in the mix, discharge and

stored position.

The drum is locked in position by lug on the

self-locating tipping bar which engages into

the locking plate on the mixer frame. To tilt the

drum, withdrawn the tipping bar to dis-engage

the locking lug. This then allows the tipping

bar and drum to be turned in the same

direction.

To retain the drum in position, align the lug

with the hole, release the tipping bar a little

while retaining the drum. Rotate the tipping

bar until the locking lug engages into the

locking plate on the mixer frame.

Loading and Emptying

Completely unwind the

extension cord and connect it

to the concrete mixer before plugging it into

the power supply. • Always start the mixer

before loading the drum. Load the mixer with

the drum rotating. • Do not throw material into

the mixer to avoid it sticking to the drum.

Trickle it in steadily over the blades. • Do not

turn mixer off while the drum is loaded. •

Empty the drum with the drum rotating. • A

built-in thermal protector is arranged in the

motor to prevent it from overheating. The

thermal protector restores automatically when

the motor cools down.

Mixing

Do NOT overload the machine. • Do NOT load or unload the drum when it is not rotating. •

Attempting to start rotating the drum when the drum is loaded can permamnently damage the motor.

• Failure to use the machine within its capacity or to operate the machine as descirbed may

permanently damage the machine and will void any warranty.

Understand the "wet mix" capacity of the concrete mixer. The drum volume is the total amount of water that

the drum can hold. Water weighs 1kg per litre. The "wet mix" is the sand, cement, gravel (or pre-mix) and

water combined. "Wet mix" weighs approximately 2.5kg per litre. This creates a "wet mix" capacity of 35 to

45% of the drum volume in kg. For example, a 100 litre drum has a maximum capacity of approximately 45kg

(45% of 100kg) of "wet mix" (in this case, possibly 2 x 20kg bags of pre-mix concrete and 5 litres of water).

1. Switch the machine ON – the drum MUST be rotating before adding anything to it.

2. Add the required amount of sand, cement and gravel (or pre-mix) into the drum – do this gradually.

3. Add the required amount of water into the drum – do this gradually.

4. When properly mixed, empty the drum – the drum MUST be rotating when it is being emptied.

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135L Concrete Mixer

Cleaning

Never put hands inside the drum while the drum is rotating. • Do not pour or spray water

directly over the motor cover, especially the openings in it. • Wipe off any dirt from the motor

cover – do NOT use petrol, solvents, dry cleaning fluids or similar products as these may damage some

materials.

Thoroughly clean the mixer at the end of each use. The slightest trace of material left in the drum will harden

and attract more each time you use it. Dried cement should be scraped out of the drum. Do not throw bricks

into mixer drum to clean it out. Do not hit the drum with a shovel, hammer or other tools to break up

accumulations of dried cement mix, as damage to the mixer may result. The drum may be scoured for

approximate 2 minutes, using 25mm / 1" gravel and water mixture. Then discharge the gravel/water mixture

and hose down the drum assembly inside and out. The IP44D protection class construction of the concrete

mixer enables you to hose down the drum assembly safely.

Maintenance

Ensure the extension cord is always unplugged before the motor cover is removed. • The

wiring diagram in this manual is for reference only. Neither the manufacturer nor distributor

makes any representation or warranty of any kind to the buyer that he or she is qualified to make any repairs

to the product or that he or she is qualified to replace any parts of the product. Only qualified technicians

should repair the mixer. Any maintenance and repairs carried out, to any of the electric components must be

undertaken by a qualified electrician. • Circled components should be fitted by qualified electricians only.

The mixer is fitted with a pre-tensioned belt. No adjustment apart from a touch of grease on the spindle.

Drum bearings are sealed for life.

Wiring Diagram

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135L Concrete Mixer

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 CONMIXBMRA2K0 220L Portable Electric Concrete Cement Mixer

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