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Comparison Karcher K 7 Compact 1.447-050.0 vs Karcher K 7 Compact 1.447-002.0

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Karcher K 7 Compact 1.447-050.0
Karcher K 7 Compact 1.447-002.0
Karcher K 7 Compact 1.447-050.0Karcher K 7 Compact 1.447-002.0
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Main
Compact dimensions. High peak performance. Wide pressure range. Quick Connect system. Adjustable spray nozzle Vario Power. Dirt cutter. Fence of household chemicals from the container. Hot water washable
Washer and attachments
Max. pressure180 bar160 bar
Power3000 W3000 W
Working flow600 L/h600 L/h
Max. inlet water temperature60 °C60 °C
High pressure hose10 m10 m
Accessories
fan-shaped
rotating nozzle
fan-shaped
rotating nozzle
Features
Transportation wheels
water suction
detergent suction
water filter
overheat protection
water cooled engine
Transportation wheels
water suction
detergent suction
water filter
overheat protection
water cooled engine
Power sourcemains (230 V)mains (230 V)
General
Noise level
91 dB /LWA/
Dimensions38x29x52 cm55x29x33 cm
Weight16 kg17.1 kg
Added to E-Catalogmarch 2019june 2014

Max. pressure

The maximum outlet water pressure provided by the miniwash; for models in which the pressure is not regulated, this paragraph indicates the standard operating value.

The higher the water pressure at the outlet, the more efficiently the unit handles with chronic and stubborn contaminants. On the other hand, strong pressure requires high engine power, which affects the dimensions, weight and price of the device — despite the fact that not every dirt requires such pressure, and excessively intensive washing can damage the surface to be treated. Thus, the pressure is chosen by manufacturers in accordance with the general class of the miniwash. Thus, values up to 100 bar are found in the most compact and low-power domestic models (see "Type"). A pressure of 100 – 125 bar is considered relatively low for household sinks, and most of these models are in the range of 125 – 150 bar — this is most often quite enough, taking into account the characteristics of the application. For professional units, the average is considered to be 150 – 175 barhowever, there are many models that give out more than 175 bar.

Noise level

The highest level of noise emitted by the minisink when operating in normal mode. The lower this indicator, the more comfortable the device is to use, the easier it is to use it without special hearing protection; and from certain noise levels the use of protection is mandatory (more on this below). All this is especially true in light of the fact that mini-sinks are quite noisy equipment — even the quietest of these units give out about 60 dB, which is comparable to talking in raised tones at a distance of about 1 m. In the noisiest models, this figure reaches 108 dB — this is comparable to a tractor engine at a distance of the same 1 m.

Recall that the decibel is a non-linear quantity, and it is best to evaluate specific values using comparative tables. Such tables can be found in special sources. Here we note that according to European sanitary standards, noise of 85 dB is allowed to be heard without protective equipment for 8 hours, 91 dB — 2 hours, 97 dB — half an hour, and 103 dB — only 7 minutes. So when choosing a unit, you should take into account the duration of work with it — with high noise, you may need protective headphones.
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