Suction power
Working power of the machine for suction.
The effort with which the unit draws in pollution during operation directly depends on this indicator. The greater this effort, the higher the quality of cleaning and the more effective cleaning. On the other hand, even in the heaviest and most performant models, the suction power does not exceed 1200 W — it simply does not make sense to increase it further. In addition, we note that with an increase in the width of the grip, the suction power must also be increased, otherwise, the efficiency will decrease. It means that only models of the same type with the same or almost the same working width can be compared in terms of suction power.
Suction width
Suction width provided by the unit. It is indicated mainly for floor scrubbers and window vacuums (see "Type"). In the first case, it refers to the width of the suction beam; in the second — the width of the working nozzle.
The width of the suction beam in scrubber dryers is usually slightly larger than the overall working width — it allows one to collect the water used in cleaning effectively. The size of the suction beam in some models of this type reaches 75 cm. In turn, in window vacuum cleaners the suction width corresponds to the actual working width. Most often, this figure is about 28 – 29 cm. it is believed that such values give an optimal ratio between performance and dimensions/weight of the unit. However, there are also more miniature models — in some devices, the width of the nozzle does not exceed 17 cm.
Additional nozzle
The width of the additional nozzle provided with the device.
Additional attachments are mainly supplied with window models (see "Type"). Such a nozzle is usually made narrower than the main one — it makes it easier to work on small glasses and in hard-to-reach places. However, there is also the opposite option: a small capture width in the device itself, increased by using an additional nozzle.
Detergent tank
Объем бака для моющего раствора, установленного в уборочной машине.
Данный параметр напрямую связан с типом устройства (см. выше) и некоторыми особенностями его функционала. Так, в мощных самоходных поломоечных машинах (см. «Тип») могут предусматриваться баки объемом в десятки литров, тогда как в роботах для мытья пола вместимость не превышает 1 л (а в отдельных моделях составляет всего 120 мл). Так что сравнивать по этой характеристике показателю можно только агрегаты одного типа со схожим функционалом. При таком сравнении стоит исходить из того, что более вместительный бак, с одной стороны, позволяет дольше работать без перезаправки, с другой — сказывается на габаритах и весе.
Waste detergent tank
Объем бака для отработанного раствора, установленного в уборочной машине.
Такими баками оснащаются исключительно поломоечные машины (включая бытовые) и модели для окон (см. «Тип»): напомним, и те, и другие рассчитаны на всасывание раствора с обрабатываемой поверхности. В целом чем вместительнее бак — тем реже придется его опорожнять, однако тем больше будут габариты и вес агрегата. Поэтому производители обычно выбирают данный показатель с учетом типа и особенностей применения машины. Так, в устройствах для окон, которые при работе удерживаются в руках на весу, вместимость баков под отработанный раствор невелика — обычно порядка 150 – 200 мл; этого вполне достаточно с учетом формата применения и в то же время такой дополнительный вес не создает неудобств при работе. В свою очередь, в поломоечных машинах применяются емкости на несколько литров или даже десятков литров; как правило, конкретный объем напрямую зависит от общей «весовой категории» и производительности машины.
Voltage
The voltage of the battery used in the machine with the corresponding type of power supply. This parameter is not key when choosing; it may only be needed when looking for a third-party charger or a replacement/spare battery, as well as for specific calculations related to capacity (see below).
Charging time
The time required to fully charge the battery of cleaning machine (see "Power supply").
The larger the battery, the longer it may take to charge it. On the other hand, this moment also depends on the type of battery. In addition, special technologies are being used to speed up the process. So two machines with a similar battery capacity can differ in charging times.
Noise level
The noise level created by the harvesting machine during operation.
Low noise levels are important for the comfort of both the operator and others; the latter is especially true in some specific places such as hospitals or kindergartens. On the other hand, the higher the power, the louder, as a rule, the unit operates and the more difficult it is to reduce this noise to a certain level; despite the fact that in many cases high volume operation is not a particular problem. So you should specifically look for a “quiet” cleaning machine only if a low noise level is more critical for you than high cost and/or reduced power.
When assessing specific loudness values, it is worth considering that the decibel used to indicate the noise level is a non-linear quantity. Therefore, the easiest way is to evaluate specific values using comparative tables. Here's a simplified table for the range that most modern harvesting machines fit into:
55 dB - background noise in an office without special noise sources;
60 dB - loud conversation;
65 dB - city street with average traffic intensity;
70 dB - a conversation between several people in a raised voice.
75 dB – high power vacuum cleaner.
80 dB - traffic noise on a busy street.
Weight
The total weight of the cleaning machine. Usually, weight is indicated with empty tanks for detergent, waste, fuel, etc. At the same time, additional equipment, such as side brushes, may or may not be taken into account. Such equipment has a very small weight compared to the machines themselves. And, when installed/removed, does not seriously affect the mass of the entire machine.
