How to choose a household waste shredder

Household waste disposers (disposers) are not found in our kitchens as often as they deserve. After all, with them, you no longer need to clean the kitchen sink of food particles, potato peelings, fish seeds and other debris – just press a button. And you can get rid of the smelly organic waste bucket forever.

Installation features
The shredder does not work by itself, it is installed in the kitchen sink. Accordingly, before purchasing it, you should familiarize yourself with the installation features of the device and check all important dimensions. Measure the diameter of the sink drain. Most of the shredders are designed for the “European standard” (90 mm). Pay attention to the thickness of the sink wall. A shredder designed to fit into a thin-walled steel sink may not fit into a glass or earthenware sink. Look under the sink – is there enough room for a new kitchen appliance?

Check the height of the drain pipe – it must be lower than the outlet of the disposer, otherwise dirty water with organic waste will accumulate in it. And do not forget about the siphon – you also need to provide a place for it.

The grinder does not have a water seal, it cannot be connected directly (without a siphon) to the sewer. The siphon should be tubular, an ordinary “pear” does not fit under the sink – it will quickly clog.

Having decided on the dimensions and basic dimensions, you can proceed to the selection of the model that is optimal for you according to its characteristics.

Characteristics of food waste disposers
According to the method of processing, shredders are divided into flow-through and storage.

Waste is loaded into the accumulative shredder in portions. After loading, the shredder is closed with a lid and switched on. The in-line shredder runs continuously and shreds all waste that gets into it immediately. Flowing ones are more convenient to use, therefore they are much more common.

The power consumption affects the performance of the shredder and what kind of debris it can handle. On the other hand, the higher the power, the more expensive the device is. In order not to overpay for excess power, it is recommended to proceed from the number of people living in the apartment / house and make a choice at the rate of 150 W per family member:

300-450 W – device for a family of 2-3 people, suitable for grinding only non-solid waste, maximum – chicken bones;
500-750 W – a chopper for a family of 3-4 people, will cope with the bones of any poultry and with medium-sized beef;800 watts and above – for a large family or for industrial use. Such a grinder is able to grind beef and pork bones, nutshells and large bones without any problems.
The larger the volume of the working chamber , the larger portion of waste can be put into the shredder. But with insufficient power, a full load can lead to a breakdown of the device, so the manufacturer selects the volume of the chamber based on the power consumption. The recommended chamber volume in milliliters is approximately twice the power of the device in watts.

The speed of rotation of the working discs affects the productivity and the ability of the dispenser to grind solid waste. But it is better to select the performance in terms of power, tk. a weak, but high-speed shredder will not be more productive than a powerful, but with a lower rotation speed. But for crushing bones and nuts, a high rotational speed will be an advantage. On the other hand, high-speed shredders are more noisy in operation. With this in mind, the optimal value for different shredders will be:

1000-1500 rpm – for low-power, low-noise models, not intended for solid waste
2000-3000 rpm – for shredders of any capacity, designed for most types of food waste, except for large bones and nuts
3500–4500 rpm – for machines that can handle solid waste – but only with the right power.
Chamber material. Cameras can be made of hard plastic (polycarbonate) or stainless steel.

Plastic is cheaper, but stainless steel is preferable, and it’s not just the latter’s greater strength – over time, the plastic becomes covered with a mesh of scratches, into which difficult-to-wash dirt gets into, creating an environment for bacteria to multiply.

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Material of the crushing disc and other working elements. The working elements of the grinder can be made of stainless steel or light stainless alloys. The first is preferable – the loads on the crusher disk and cams are high. Where the steel element is jammed, the light alloy will fail. And in the presence of overload protection, jamming of the working element is not a problem.

The overload protection will stop the shredder if the load on the motor becomes too high. Protection can be automatic or manual restart.

The automatic protection will reduce the rotation speed or turn on the reverse, after the jamming is eliminated, the chopper will continue to work in the same mode. Overload protection with manual restart will simply turn off the engine – you will need to manually remove the cause of the jam, then restart the disposer.

The household waste shredder is a rather noisy device, so sound insulation in it should not be neglected.

And, if you do not like noisy kitchen appliances, then it is better to choose a dispenser with complete sound insulation – in this case, a sound-insulating layer surrounds the engine and the working chamber from all sides.

Pay attention to the completeness . Not all dispensers have a pneumatic button and a drain pipe included. The device cannot work without them, so they will have to be purchased separately.

Choice options
For a small family, an inexpensive, low-power chopper with a power of up to 450 watts will suffice .

If you are looking for a powerful disposer capable of grinding large bones, choose from 750W models with high rotation speed and automatic overload protection.

If the level of noise emitted by the kitchen appliance is critical for you, choose among low-speed dispensers with full sound insulation .

If you want the disposer to “cope” with emerging problems on its own, without your intervention, choose among the models with automatic overload protection .