How To Maintain A Concrete Mixer

A concrete mixer, more commonly referred to as a cement mixer, is a piece of equipment specifically designed to homogeneously combine cement, sand/gravel or other aggravates with water to form concrete. The standard concrete mixer blends the material together using a revolving drum. For most smaller jobs, portable mixers are generally sufficient, however for larger jobs, in-transit mixers are often used.

A concrete mixer with a diesel-powered engine is an investment – regular maintenance is essential to prolong its life as much as possible.

Keep the Engine clean

The diesel-powered engine must be kept clean and in a good working condition. Make sure the engine is regularly wiped down with a damp cloth, an air compressor can be used to blow away any loose particles out of reach of the cloth. Cement and other particles of dust can easily work their way into the engine, clogging it up and ultimately causing it to fail – leading to costly repairs.

Cleaning the Drum

To prolong the use of your concrete mixer, after use, the drum and paddles should be rinsed down. Drum maintenance is relatively straightforward, simply switch the mixer on and pour some water inside, once it has turned several times, empty the dirty water out into a bucket. A pressure hose can also be used on the inside of the drum to clean off any excess concrete.

Tackling Hardened Concrete

For concrete firmly set inside the drum, fill the drum with water, turn the mixer on and gently tap the outside of the drum whilst it is turning – this should knock any large lumps of concrete off. If this fails to remove the hardened concrete, there are several cleaning products which can be used. For exceptionally stubborn patches of concrete, a heavy-duty acid based product may be used to dissolve them, however there are less toxic and more environmentally friendly products available on the market.

Before Use

Always be sure to check all the nuts and bolts before every use – this is not only essential to maintenance but it could also prevent potential injury caused by any loose parts. All the parts and the pulley of the mixer should also be greased before use to prevent damage from friction.

General Safety Rules

• Always read the instruction manual carefully for your concrete mixer
• Keep your equipment in good working order by following the above maintenance tips
• Always check your machine thoroughly before use, ensuring no tools have been left inside the drum and that all nuts and bolts are securely fastened down
• All covers and guards should be kept in place and in good working order
• Do not leave the machine unattended whilst it is switched on
• Never load the drum whilst it is stationary
• Wear appropriate clothing when operating the mixer, loose clothing and jewellery may get caught on the equipment
• Never put your hands near the drum whilst it is rotating