✅ Operating principle of a Karcher car wash

Pressure relief valve [7]

Karcher cleaning agent [10]

A cleaning agent is necessary to easily remove dirt from any surface.

High pressure outlet [9]

Under high pressure, a stream of water flows from the outlet hose into the high-pressure gun, and from the gun onto the surface being treated. I would like to remind you that in the new series of Full Control mini-washes, the guns have touch-sensitive operating mode switches, which greatly simplifies the operation of the mini-wash.

In the injector, water supplied under pressure is mixed with Karcher detergent and supplied to the outlet hose.

Pistons and valves

The system consists of three pistons, each of which works progressively, creating pressure in the pump. After which a stream of water under high pressure is supplied to the outlet.

The piston moves downward in a translational motion, thereby sucking in liquid and interacts with the suction valve [5], which creates pressure in the piston chamber, releasing a powerful stream of high-pressure water into the injector.

Pressure relief valve [7]

The pressure relief valve is needed to regulate and maintain smooth operation of the system.

Bearings [4]

Bearings transfer the rotational energy of the engine into translational mechanical work of pistons and valves.

Water cooling system [3]

The water cooling system used in Karcher devices protects the electric motor from overheating, which ensures its reliable and durable operation. Karcher, first of all, is German quality and reliability.

Water flow [2]

Input element for supplying water to the mini-wash. Typically, liquid is supplied by connecting a garden hose, but if there is no tap or other source of liquid supply under pressure, in Kärcher Full Control series mini-washes it is possible to draw liquid from a canister, bucket, or other container.

Electric motor [1]

An electric motor is an element of a mini-wash that drives the Karcher mini-wash pump by converting electrical energy into mechanical energy.

Ease of use . Even a child can handle the device: Karcher offers convenient and practical floor-standing devices that are easy to transport around the area.

How do Karcher mini-washers work?

Anyone who has ever used a mini-wash knows how it can be quite a fun activity. They can clean almost any surface around the house and it won’t take much time. But how does a high-pressure apparatus work? How does it work and what is the principle of its operation? Let's look at the mini-wash from the inside and take a trip to the Kärcher Plant in Obersontheim, where the Kärcher K 7 Full Control mini-wash is assembled.

How does a high pressure washer work?

An animation graph will show the operating principle of the Kärcher K 7 Full Control mini washer. It shows where the motor is located, where the water flows as soon as it enters the device from a garden hose, and how high pressure is created.

Example: ADV Karcher K 7 Full Control

The heart of each device is an electric motor that drives a pump [1] . In order for the pressure system to work correctly, water is needed, which is supplied using a garden hose [2] . Before the water passes through the valves to start coming out under pressure, it will pass through a double circuit around the motor and cool it [3] . This significantly reduces operating noise and extends the service life of the device.

The motor drives the oblique washer, which in turn drives 3 pistons that move up and down [4] . The K 7 Full Control high-pressure cleaner has a total of 3 pistons, each of which works to extract and supply water. The downward movement of the piston [6] draws water through the suction valve [5] and supplies it to the piston chamber cylinder. When the piston moves up it pushes water through the pressure valve [7] to the injector.

The cleaning agent [10] is supplied to the injector [8] if necessary. The water then passes through the pump [9] to the high pressure gun.

Of course, in real time, all this happens so quickly that as soon as you turn on the device, you can immediately pull the trigger to start cleaning. The mini washer shown in the picture is also equipped with an LED display on the high-pressure gun, which shows the selected pressure level, as well as an example of the application of this pressure. This allows you to correctly find the operating mode of the device in which the best cleaning result will be achieved.

Not to mention the incredible cleaning results that are achieved with the help of a pressure washer, you can save on drinking water, because when washing with a regular garden hose, about 3,500 liters of water will be spent per chat, while a high-pressure washer will use from 400 to 600 liters. The saving effect is achieved precisely due to the fact that high pressure speeds up the cleaning process.

Automatic toggle switch that stops engine operation

A water pressure sensor is an integral attribute of a modern high-pressure washer. It is installed on the output channel of the pump and regulates its activation. Look, when we want to start working with such a mechanism, we pull the trigger and wait for pressure, thereby starting the engine. When water is no longer needed, the trigger is released and the flow of liquid stops.

This is where the pressure sensor comes into play, which will prevent overheating of the engine, which functions even after the trigger is released. That is, when a critical pressure level is reached, it is triggered, thus preventing the power source from breaking. However, as already mentioned, unnecessary engine starts are detrimental to the engine, so popular brands of such devices have come up with another way to protect the engine from high pressure.

In this case, there is no shutdown as such, the sensor simply moves the water line to the outlet, allowing the liquid to circulate in a circle. Yes, electricity consumption will increase significantly, but the engine will be able to last much longer.

Unique innovative solutions implemented in devices from the world leader in the field of cleaning and cleaning allow increasing the efficiency of washing work, service life and maintainability of equipment, and impeccable service minimizes the risk of equipment downtime.

As you know, car washing is a very expensive business, associated with the consumption of large volumes of water and cleaning products, as well as significant labor costs to remove heavy contamination. The situation changes when a high-pressure apparatus with heated water comes to the rescue. In addition to the excellent quality of washing, especially in the difficult climatic conditions of our region, it is economically beneficial for both business owners and clients.

What ensures such cleaning efficiency?

It turns out that the formula for high cleaning efficiency is simple - it is the strong pressure of the water jet multiplied by its high temperature.

Heated water pressure washers can increase the water temperature from approximately 12 to 155 °C, with the maximum temperature depending on the specific model of the machine.

Calculation of costs for one washing cycle shows that “hot” washing is 18% more economical than cold water washing. In addition, at negative temperatures this figure is even higher and amounts to more than 20%!

Cleaning with hot water not only optimizes the process, but also has a number of compelling advantages. Let's list them.

• Improved cleaning result.

Hot water under pressure easily dilutes old oil contaminants and, as a result, allows you to quickly clean mechanisms and parts. Using hot water allows you to remove the most complex technical stains without chemicals or with minimal use. All this reduces vehicle downtime.

• Reduced consumption of cleaning products.

To dissolve oil, fat, resin and other contaminants, in most cases it is enough to simply treat them with hot water, and this is a direct saving of money and reducing the burden on the environment.

Washed warm surfaces dry faster after cleaning. This allows personnel to quickly begin further work with the object.

• Time saving. Cleaning with hot water speeds up the removal of dirt, which saves working time by up to 35% and increases the profitability of cleaning operations.

Since then, professional Kärcher water heating devices have long been widely used in the automotive business of European countries. They are used by all industry participants. In any area of business related to a car, the impeccable appearance of a vehicle is not only a reflection of the company’s status and evidence of its care for customers, but also a production necessity.

The company offers a wide range of high-pressure water heating devices of various classes, in different equipment and configuration options, among which every business owner can find the option that is optimal for him in terms of price and performance. Thus, HDS units from Kärcher provide significant benefits even when using cold water. And heated models have even deeper functionality.

Unique innovative solutions implemented in devices from the world leader in the field of cleaning and cleaning allow increasing the efficiency of washing work, service life and maintainability of equipment, and impeccable service minimizes the risk of equipment downtime.

There is no doubt that any auto business owner seeks to increase their competitiveness both by optimizing costs and by strengthening the company's reputation as the first to introduce new technologies, improve working conditions for staff and improve the level of customer service. Use this opportunity with an effective solution from a global expert in the field of cleanliness!

© 2009-2020 Clear LLC Karcher equipment store. St. Petersburg, Polikarpova alley no. 1 (metro station Pionerskaya)

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Answer: Karcher household mini-washers are divided into 6 series (K2, K3, K4, K5, K6 and K7). The basis for dividing into series is the main technical characteristics of mini washers (outlet pressure, productivity and power consumption).

Operating principle of Karcher Full Control series mini washers

Karcher cleaning agent [10]

A cleaning agent is necessary to easily remove dirt from any surface.

High pressure outlet [9]

Piston (engineer) [8]

In the injector, water supplied under pressure is mixed with Karcher detergent and supplied to the outlet hose.

Pistons and valves

The system consists of three pistons, each of which works progressively, creating pressure in the pump. After which a stream of water under high pressure is supplied to the outlet.

Piston [6]

The piston moves downward in a translational motion, thereby sucking in liquid and interacts with the suction valve [5] , which creates pressure in the piston chamber, releasing a powerful stream of high-pressure water into the injector.

Pressure relief valve [7]

The pressure relief valve is needed to regulate and maintain smooth operation of the system.

Bearings [4]

Bearings transfer the rotational energy of the engine into translational mechanical work of pistons and valves.

Water cooling system [3]

Water flow [2]

Electric motor [1]

An electric motor is an element of a mini-wash that drives the Karcher mini-wash pump by converting electrical energy into mechanical energy.

What is a mini-wash?

An automatic high-pressure washer can be called a mini-wash if it:

Allows you to wash objects under pressure up to 160 atm.
It is not large in size and weight.
It is not as expensive to maintain as compared to industrial devices.
Not picky about the water source.
Can be used together with detergent.

The manufacturer divides Karcher car wash into classes:

K2, k3 – sinks belonging to the entry level,
k5, k4 – mid-level mini-washes,
k7 – premium segment of home washes.

Entry-level mini-washers Kärcher

This class of sinks is suitable for washing garden equipment and cleaning paths. You can also thoroughly wash your car with them, but the design imposes its own limitations.

The power of the water flow will be limited to a pressure of 110 atmospheres.
The water connected to the sink should already be under pressure.
If this condition is not met, the sink will work, but the pressure force, which is already not high, will drop significantly.
The weight of an economy class sink is about 5 kg.
Maximum washing capacity -25 square meters per hour.
Consumption -380 liters per hour.
Power -1.6 kW.

Inexpensive sinks have many advantages. They will cope well with feasible tasks. All the necessary attachments, which significantly help with cleaning, are already included in the kit. These sinks, although not the most powerful, are among the most compact.

Average level

The K4 and K5 provide the user with many more options than their predecessors.
With their help, you can do cleaning without having a source of pressurized water at hand. They will not wash worse, even if the water is taken from a bucket or barrel. In this case, the pressure will reach up to 145 atmospheres.
The set will include even more accessories for different types of sinks. Increased uptime and service life are ensured by water cooling
Productivity will increase to 40 square meters and 500 liters per hour.
Of course, the weight and power consumption of energy also do not stand still: 13 kg and 2.1 kW.

More powerful and efficient mini-washers K4 and K5 are becoming larger, heavier and more expensive

The K 4 line is divided into Compact, Full control and Premium.
Compact is a maneuverable mini-wash, with quick hose connection and jet pressure regulation.
Compact has a capacity of 420 liters per hour.
You can work with water no more than 40 °C.
Hose length – 6m.
There is a filter.
The kit includes a high pressure gun. Weight is only 10 kg, so it is not difficult to move it to the right place.
The advantages include the completeness of the system for working with detergent.
But the k4 is already becoming less compact and less convenient to store.

Attention! The minimum continuous operation time of Karcher k2,3,4,5 should not exceed 20 minutes, otherwise this may lead to overheating of the motor.

Karcher K 4 Full Control is a good cleaner for medium soiled surfaces.

It has almost the same characteristics as the previous model, but is more convenient to store, since the handle is completely foldable, and is also equipped with an LED indication system for pressure control. The ability to work with detergent is more convenient.

Karcher K 5 Premium Car is designed specifically for home car washing.

The kit already includes a rotating brush, a nozzle for cleaning with foam and even car detergent, and wipes for wiping dry.

The Premium sink has a hose that is 2 meters longer than the economy models. Thanks to the ability to direct a precise stream of water, this washer does a good job of cleaning car parts, but it cannot be called economical in terms of water consumption.

Karcher K 5 Basic allows you to clean more and at the same time can work longer without switching off. Requires refilling with antifreeze.

Karcher K 5 Compact is maneuverable and powerful, it will wash away even heavy dirt.

Karcher K 5 Full Control

Equipped with an aluminum pump, as well as a display for pressure control.

Can be washed under pressure up to 145 bar.

Premium class mini-washers

The Karcher K7 car wash is no longer just a household car wash, it is almost a professional device. The most powerful line of Karcher sinks, with a pressure of 160 atmospheres. The set includes a full set of attachments, the power is adjusted directly from the handle, and the motor has an emergency shutdown system. With its help you can wash 60 square meters of heavily contaminated surfaces in just an hour.

Carefully! When working with high-pressure washers, do not forget that a stream of water at such pressure becomes as strong as a cutting blade and can cause serious injuries.

A consumer survey showed that the most successful model is the Karcher K 5 Compact. Despite its small size, it has the power to wash away heavy stains, while the price is much lower than the seventh series. Add to this a pump made of silumin, which is more durable than plastic, and the choice is really obvious.

Depending on how much you need, you can buy a strong Karcher car wash in the range from 3 to 60 thousand rubles.

Operating principle of Karcher mini washers

We tried the water. We tried soap. We tried rubbing and scraping. We have tried strong chemicals that do not meet the stated requirements. So when will it be clean?

Discover Karher pressure washers! Nowadays it is difficult to find a person who does not know about Karcher mini-washers. And many of them have already tried this useful invention. Super-powerful hose, a powerful stream of water under pressure approximately 100-200 times higher than the air pressure around us. Now everything shines: courtyards, cars, country furniture, barbecues and everything that can be cleaned of dirt. Let's now take a closer look at how they work!

Why does pressurized jet make things cleaner?

Let's start with the fact that water itself copes well with pollution, and there is a good scientific reason for this. Its molecules have a slight electrical polarity (one end is positively charged and the other negatively charged), so they tend to be attracted to things on their own.

Detergents (soaps, chemicals) help water do its job even better by breaking down oil and fat molecules. But some types of stains just won't budge, no matter how hard you try. Then a high-pressure apparatus will come to the rescue. It uses a narrow stream of high pressure hot or cold water to break down the structure of the dirt. Because water moves quickly, it hits the dirty surface with high kinetic energy, hitting the dirt and dust like thousands of tiny hammer blows.

Components of a Karcher high-pressure apparatus.

A high-pressure apparatus is simpler than you imagine when you hear its name. This is a water pump that is powered by an electric motor. The machine draws water from a regular tap, a pump accelerates the water under high pressure, and then injects it from a hose at speed through a hand-held spray gun. You can attach various accessories to the end of the hose to clean different things.

Petrol engine washers. Although pressure washers typically run on electricity, the larger ones are often powered by small gasoline engines. This allows the washers to operate autonomously, without being connected to power grids.

Now the main parts that you will find inside the pressure washer:

Water Pump: This is the heart of the pressure washer. It is driven at high speed by an electric (or gasoline) motor. The pump draws water from the faucet and pushes it out into another path under high pressure, creating the powerful stream we are familiar with. The pumps are designed to handle a water flow of approximately (4-8 liters) per minute.

It should be noted that the pump material depends on the series of your mini washer:

Starting from K2, K3, K4, a plastic composite is used.

In sinks of a higher class K5, K7 - silumin (an alloy of aluminum with silicon) pumps.

All about Karcher mini-washers - types, configurations and choice of device

Every car owner knows that keeping your car clean is not a whim, but a necessity. An easy way to clean your car is to use a professional stationary car wash. But using the service regularly is expensive.

Another common option is to wash the vehicle yourself using shampoo and a hose. In words it is convenient and cheap, but the process is time-consuming, labor-intensive, and the result is not brilliant. The third option, which combines the advantages of the previous two, is purchasing a high-pressure washer. Car enthusiasts use Karcher to wash their cars.

All the advantages of the device

A pressure washer can be used on a variety of surfaces. At the same time, it has a number of advantages.

Gentle cleaning . Despite the fact that the AVD removes even stubborn dirt from any surface, the water jet does not damage the base material. Therefore, high-pressure washers are used to clean cars: with their help, you can remove not only dirt, but also rust stains and layers of peeling paint. At the same time, the AED does not leave mechanical damage on the car body. The washer is used to clean garden sculptures and paths and remove graffiti from walls.

High efficiency . The high pressure washer allows you to complete an impressive amount of work in the shortest possible time. For example, professional cleaning of a car body and wheels may only take 8-10 minutes. At the same time, dirt is removed even from the most inaccessible places, and no streaks remain on the cleaned surface.

Contactless cleaning . The work does not require rags, sponges or special brushes. Only a high pressure washer hose that will clean any surface. And special attachments will help you reach even hard-to-reach and high places.

Ease of use . Even a child can handle the device: Karcher offers convenient and practical floor-standing devices that are easy to transport around the area.

Variety of attachments . The use of special attachments allows you to effectively clean seams and other hard-to-reach places, completely eliminating dirt, rust, plaque and fungus.

Comment: Fire washing, I bought it because I live in a private house. Works great! What can you say, a nickel, manage for a nickel! There are a lot of details about washing on YouTube, so I’ll keep it short! If you don’t mind 15,000, feel free to take it, you won’t regret it!

Principle of operation

A stream of water washes away contaminants: the dirt cannot withstand the pressure and is destroyed, while at the same time the flow removes small particles. Technically, the cleaning process is a little more complicated; To understand the nuances, it is worth understanding the design of the device. Its components:

electric motor – power source;
pump – provides the necessary pressure to the washer;
an automatic device that turns off the engine and prevents overheating;
hose, installed on a water supply or to an open container;
gun with pressure hose;
frame;
nozzle;
connection cable.

The fluid pressure in the pump increases, and water flows to the gun handle. When you press the button on the handle, the liquid sprays out. This non-contact cleaning minimizes the possibility of damage to the paintwork. When a car owner washes the car himself with a sponge or rag, dirt particles scratch the paintwork. Karcher sink eliminates this.

Often the Karcher mini washer is equipped with functional attachments. The best results are provided by detergents, such as special shampoo.

Advantages and disadvantages

Some advantages of the Karcher sink have already been mentioned above. Its key advantages:

Washing with Karcher saves time and water consumption.
This method is the least dangerous for the car, and the paintwork protects it.
The operating instructions will help to prolong the operation of the device as much as possible; a long warranty is often included, for example, Karcher devices have a warranty of up to two years.
The device is multifunctional. In addition to cars, it washes roofs, building facades, terraces, swimming pools, garden paths.

Despite the many advantages, there are a number of serious disadvantages:

Car wash pumps fail due to careless operation.
Karcher is a rather dangerous device. A pressurized jet can break car windows or mirrors and even injure a person. Therefore, before you start working with the mini-wash, you need to carefully study the manual.

The high cost of washing cannot be considered a disadvantage of Karcher. The device pays for itself within 1 year.

Questions about repairs and spare parts

How is Kärcher equipment repaired?

Repair work is carried out by Kärcher at fixed prices.

Benefits for the client:

Convenient, free for the client delivery of equipment for repair and its return
Fast repairs
No repair estimate required
One-year warranty on repairs
Honest, pre-known prices

In what cases can warranty claims be made?

Kärcher provides private purchasers of household products with a 2-year warranty starting from the date of purchase. The warranty covers any malfunctions caused by defects in materials of construction and manufacturing defects. To confirm the availability of warranty obligations, you must present a receipt (receipt) for the purchase.

Please note that the warranty becomes void if:

the device was not used for its intended purpose (for example, in the case of using household appliances for commercial purposes);
The device was opened in order to carry out repairs on its own.

How is warranty repair carried out?

Kärcher provides a 2-year warranty covering faults caused by defects in materials and workmanship, provided that the product is used for its intended purpose.

Based on the information about the device and the document you attached (for example, a receipt), our specialists will check the possibility of performing warranty repairs or the presence of other grounds for free troubleshooting. Please take into account our warranty conditions - see the answer to the question "In what cases can a warranty claim be made?"

Where can I buy spare parts?

All spare parts listed on the last page of the operating instructions can be ordered from our sales partners.

For safety reasons, replacement of other parts and assemblies should only be carried out by specialists from our service partners who have undergone special training. They have access to complete lists of spare parts and can advise you.

If you would like to replace a part listed in the instruction manual under warranty, please send us an email with a brief description of the problem and a copy of your proof of purchase. We will check whether such replacement is covered by warranty.

This is what the main components of a modern high-pressure washer look like. Of course, there is also a power cable that needs to be protected from the action of water and various “bells and whistles” such as nozzles for changing the type of jet, but there is no point in describing them, you’ll figure it out yourself! There will be a little zest for you.

Classification

Mini car wash involves a number of models, divided into classes:

Karcher entry level car wash. It is characterized by low cost, light body, small size. Suitable for those who do not plan to clean their car often.
A middle-class high-pressure Karcher with water intake from a tank is the best choice for owners of 2-3 cars.
Mini-wash of the highest class. It is considered a semi-professional unit, capable of quickly cleaning dirt from large surfaces.

Primary class

power from 1.3 to 1.5 kW;
unit productivity from 330 to 410 l;
pressure does not exceed 140 bar.

The jet pressure is weak even when connected to a water supply. When drawing from an open source, the pressure is reduced to a minimum, which negatively affects the quality of cleaning;
Suitable only for washing small cars.

It is recommended to operate an entry-level Karcher for no longer than 30-40 minutes, no more than 2 times a day, with intervals between switching on of 6-8 hours.

Among the advantages of the equipment:

compactness;
ease;
budget;
long service life if instructions are strictly followed.

The class models are varied. The body has a built-in compartment for chemical detergents, nozzles: mud and jet. The pump is made from polymer. Cost from 4000 to 8000 rubles.

Middle class

Features of middle class sinks:

power reaches from 1.7 to 2.1 kW;
productivity up to 420-510 l;
pressure - 120-145 bar.

The pump is made of aluminum, which increases its durability. Such Karcher car washes have high performance, so they are recommended to be purchased by owners of 2 cars.

The middle class device is equipped with a tank or injector for detergent. There is a water cooling function for the electric motor. As an additional advantage, they note the possibility of using a mini-wash to clean the facade of the house and paths.

it is necessary to purchase additional accessories: hose nozzles with a return valve, filters;
there is a possibility of the motor overheating when water is completely pumped out of the container;
high price;
small set of equipment.

The model base is widely represented. You can find a car wash with a gasoline engine that does not depend on the network. The set includes two nozzles. Equipment costs from 15,000 to 30,000 rubles.

Top class

Technical parameters of various class models:

high power of the unit - 2.5-3 kW;
productivity reaches 600 liters per hour;
pressure from 150 to 160 bar.

Specifications

Technical parameters that are relied upon when choosing Karcher:

Pressure. A pressure of 130 bar is considered sufficient for the operation of the units; the force of the jet depends on this indicator.
Performance. The parameter shows how much water the washers consume per hour or per minute. Country specimens consume from 10 liters of liquid per minute.
Pump power. The optimal power of the Karcher engine is from 2 kilowatts.

Other characteristics that influence the choice of mini-wash:

Equipment. The standard set for any Karcher class includes a pair of nozzles and oil for washing.
Filters. There are two options: a replaceable (disposable) filter and a filter designed for repeated use. Last option
The karcher car wash may have a composite engine. Such models are more expensive, but are cost-effective over long-term use. If the pump breaks down, you only need to replace the faulty part, which will seriously save money. These devices are considered in demand for professional car washes.
The type of electric motor cooling – air – is less efficient compared to water.
Length of pressure hose.
Water intake. It is important to see a specific figure from what depth liquid can be drawn from the tank.

The cost of the Kärcher K2 engine reaches 70% of the price of the device.

Key Features and Options

When choosing a mini-wash for a car, you need to take into account its technical parameters, which are discussed below.

Performance. This term refers to the volume of water pumped by a pump per unit of time. This characteristic determines the force of pressure.
Pressure. Quantitative characteristics of the impact of water flow on the surface. High pressure is required to clean heavily soiled surfaces, such as the underbody of a car. To do this, you should consider devices with a pressure of more than 100 bar, which allow you to wash the body of most types of contaminants.
Availability of a filter. This device serves to protect the pump from damage by microparticles contained in water, especially hard water.
Water intake. A car wash can consume water from a water supply or from a container, which is determined by the device’s ability to create water pressure. Mini-washers that do not have it are able to take water only from the water supply, since in this case only it can provide water supply under pressure. As is clear, such devices are characterized by low mobility. During operation, you can only move away from the water supply at a distance corresponding to the length of the mini-wash hose.

Availability of heated water. This is important for using a mini-wash during cold periods, since washing with cold water in such conditions can damage the paintwork.
Total Stop. This system automatically turns off the mini-wash motor when the gun handle is released and serves to save water. The principle of operation of the automatic shutdown system is that after releasing the trigger of the gun, excess pressure is created. Under its influence, the bypass valve rod presses the switch. This results in a power outage. After pressing the lever, events occur in reverse order.
Based on the above parameters, mini-washes are classified into the following classes: entry-level, mid-level, high and highest (or extra). It should be taken into account that some manufacturers develop their own, usually broader classifications of mini-washers.

Pump pump materials

Their strength determines the durability of the device; this is explained by the fact that the pump head is considered one of the most vulnerable elements of a mini-wash. This is due to the exposure of this part to maximum water pressure during operation of the device. Plastic heads have the least strength and therefore cost. However, their durability is predictable - the limit is up to an hour of continuous use. Longer use of the device leads to destruction of the plastic heads.

It should be taken into account that in the event of a breakdown, the cost of repair will be comparable to the price of a new mini-wash, so saving in this way is not advisable. Metal heads, which are made from brass or silumin, are more durable and expensive. At the same time, silumin heads are somewhat inferior to brass in strength, so the former are used in household mini-washers, and the latter in professional models.

Equipment

Production equipment of the Karcher sink:

high pressure apparatus;
hose;
pistol grip;
union;
pressure regulating nozzle.

Depending on the models, the Karcher kit can be supplemented with a dirt cutter and a cleaning container - a tank for cleaning agents. Car washing machines are equipped with a built-in mesh filter.

Some consumers complain that the standard configuration of the mini-wash is not enough, and the add-ons are unreasonably expensive. How to choose Karcher for car washing correctly and quickly? You should pay attention to the number of devices that increase its functionality:

a special brush for foam cleaning, which increases washing efficiency;
various accessories for the hose and hooks for storing it or for fixing the cable. Such details will allow you to vary the size of the hose and solve the storage problem;
detergent spray gun;
chemicals for car washing.

It is recommended to take into account that the Karcher equipment may be a marketing ploy. Parameters and averages: power 2 kilowatts, pressure 130 bar, water flow 500 liters per hour - the decisive factors of choice.

How to use Karcher correctly - instructions for use, connection and care

It is difficult to imagine any modern cleaning or washing process without the use of such a convenient and practical device as a high-pressure washer. It is easy to use, affordable, and effective on large surfaces. By purchasing a mini-wash for private use, you get a real assistant who can facilitate any work related to cleaning the house and the surrounding area, cleaning the territory, washing a car, walls, roofs, facades, garden equipment and agricultural implements.

Choosing a mini-wash is a process that requires special scrupulousness and seriousness. It is no secret that German-made Karcher high-pressure washers are the most popular among consumers. They are so popular and widespread that many buyers call any washing unit from another company Karcher. A real Karcher is distinguished by its versatility and reliability. Such a machine is suitable for performing almost any task, so the demand for this equipment is growing every day.

The reason for its popularity is that Karcher specialists were the first in Europe to produce high-pressure washers, and therefore have extensive experience in developing new models. Over decades of productive work, they managed to study this issue thoroughly, introduce several patented technologies, and select ideal materials for the washing mechanism.

How to make the right choice of mini-wash

Karcher has several classes of sinks. Each model has a type designation: – K2, K3, K4, K5, etc. Also on the packaging of each sink there is a diagrammatic illustration of what can be washed with it. The classes differ from each other in performance, power, price, and, most importantly, the material from which the pump is made.

We will help you understand the main types of mini-washes from the renowned German manufacturer in order to find out their features and performance characteristics, because these indicators determine performance and determine their purpose.

There is a common opinion among users that they need to be guided by size. The small one washes small objects, the medium one washes, respectively, medium-sized ones (including a small and not very dirty car). And the big one - everything of size, including trucks and trucks, tractors and combines.

There is a grain of truth in this statement. But it’s better to look not at the size of the washing machine, but at its technical characteristics.

1. Entry-level mini-washers K2 and K3 are characterized by a low price and small body parameters. Their advantage is light weight, ease of storage and transportation. They are compact and fit in the trunk. But they don't wash well. K2 are suitable for garden equipment, benches, borders, bicycles. As a rule, they are purchased for rare and short-term work on occasional cleaning of small areas. K3 will wash both a motorcycle and even a car, but not too dirty. The pressure in such models does not exceed 100-110 bar. Classes K4 and K5 are the most optimal and popular among users. These devices are practical, easy to use, and designed to perform a wide range of tasks. They have a long working life and a durable aluminum pump. The outlet pressure can reach 120-140 bar, it is possible to work with any source of water, it can be connected to a tap or to an artificial reservoir, a water tank, or a barrel. This is the most optimal option for a mini-wash, including high technical characteristics and an affordable price. It is also worth noting that this class is equipped with:

Quick connect system;
forced cooling of mechanisms, which promotes long-term operation;
hoses included, K-4 – 6 m, K-5 – 9 meters.

2. There are also high-class Karcher industrial units K6 and K7. They can work without interruption for cooling, that is, constantly on. This feature is important in large service stations, when washing large areas in enterprises. The speed and performance of such machines are worthy of respect; no other manufacturer can compare with them. The devices are large, heavy, and equipped with wheels for transportation. For a home there is no point in buying such a unit with such power, but for a business it is just right.

What is needed for a quality wash?

In order to choose the right model that will best satisfy your needs, you need to familiarize yourself with the features of each, the range of its operation, the rated power and the capabilities that it provides to the mechanism.

You will be able to use Karcher correctly only when the technical characteristics of the washing unit perfectly match the future volume of work.

The tips located on the box of each unit will help with this - the areas of application of the model that it can cope with are drawn here. Instructions for use of each device are included in the box; you should also read them carefully. The standard package of Kärcher miniwashers has everything necessary for the device to fully operate, but some models do not have a low-pressure hose. Sometimes it can be replaced with a garden hose of a suitable diameter.

The cleaning performance is affected by the material of the piston and pump. Karcher always has a steel piston, and regarding the design of the pump, its material comes in different types:

Fiberglass. The strength is not bad, but it does not tolerate heavy loads. Installed in the lowest class, K2 and K3.
Die-cast aluminum. Surprisingly durable and light at the same time. Does not rust. Resistant to deformation and loads. Used in classes K4, K5.
Brass alloy. Combination of copper and inca. It is considered an “eternal” material that does not change its appearance for decades.

High-quality washing is also determined by the detergent; it must be special, designed for high-pressure washing.

Washing stages

The first stage of working with a mini-wash in a home or industrial environment is to clearly determine the source of water: a stationary water supply or a prepared container.

Connecting a Karcher sink to a water supply is the most popular method of using it. To enable it you need:

You need to attach a filter and fitting to the supply pipe. A filter is not a prerequisite, but water, even from a tap, is never absolutely clean. Therefore, it is better to protect the unit from damage.
Using an adapter, attach the hose. Ideally, the adapter should be quick-clamping, keyless, and even with an aqua-stop to stop the reverse flow of water.
On the other side, the hose is connected to a water tap. Here’s a simple way to connect to a centralized water supply. Before connecting the Karcher to a barrel or natural source, we do the same thing, only we hook the hose not to the tap, but lower it into a container. And we suck it in a little (like gasoline from a canister). It is very convenient when an outlet with a fitting is cut into a barrel or tank. Then the hose can be attached to it.
We check the clutch points, the possibility of water leakage and troubleshoot problems
Apply detergent to the contaminated surface. To carry out a touchless wash, detergent is applied to dry dirt.
After rinsing, the surface should be wiped if necessary.
It is worth noting that when using contaminated water, it is still necessary to resort to the use of special filters to purify the liquid. If we pull from a barrel, then the filter must also have a check valve (so that water does not leak out).

Common mistakes when washing a car

When washing a car, mistakes are often made due to a careless attitude to the technology of applying shampoo (it is applied from the bottom up).
Also, first the car is watered. This is wrong; shampoo drips from wet dirt, bringing no benefit.
Errors in using nozzles are also common. The mud cutter is only for wheels, not for the car body. It can cause scratches.
For some reason, some users confuse a mini washer with a pump. They lower the intake hose far into a pond or deep well, and sincerely wonder why the water does not flow. But a sink can pull water from a depth of a meter or two, no more. That is, the container with water should be at the same level as it, or slightly lower.

Dishwashing liquid, washing powder—what car enthusiasts don’t use to wash their cars. Remember, anything like this speeds up the breakdown of the unit, and the car will be dirty and streaky. Only chemicals for high pressure washing.

Expert advice

User errors are quite common, but they can be avoided by studying the advice of experienced professionals.

It is advisable to wash the car step by step, from below. First one edge, then the other, leaving the roof and hood for the end.
It is advisable to rinse off the detergent in the order in which it was applied - from bottom to top.
If you don't follow these tips, you can create streaks on the surface of your car and leave a lot of dirt in hard-to-reach places.
Be sure to use a filter. If it becomes clogged, it is easy to replace, and a damaged mini-wash costs incomparably more.
The washing hose from the water tap does not have to be pulled through an open window or door; you can make a hole under the window sill.
The most convenient way to turn it on is to pump water directly into the barrel. And ahead of time, insert a fitting with a control valve into this very barrel, and then connect the Karcher from it.
It is convenient to buy chemicals for washing cars in special liter bottles; in some models of mini washes they are integrated into the overall design and can be changed with one click.

conclusions

The Karcher mini-wash is an excellent device for cleaning and washing cars, sidewalks and carpets. It is powerful, functional and convenient; its compact dimensions contribute to versatility of use and increase the comfort of storage. Many years of experience in developing devices of this type have allowed us to achieve high quality and reliability. This is why Karcher devices are the best high-pressure washers on the market today. Proper care of the Karcher mini washer and compliance with the connection rules will extend its operating time.

How to choose Karcher

Decide on the washing class. If you have one small car and you are not going to clean it more than once a week, there is no point in choosing obviously expensive car washes with additional functionality. A low-class Karcher with a capacity of 360 liters per hour will be sufficient.
It’s not a problem if the Karcher mini-wash kit does not include a water supply hose. Can be replaced with a garden hose of convenient length and flexibility.
A filter for fine water purification would be useful. In its absence, dirt particles and small pebbles get into the sink, which quickly wears out the pump.
Pay attention to where and how the detergent reservoir is located. A Karcher household plastic sink with a shampoo container attached to the body is less convenient than one where the chemical tank is located in the body.

Peculiarities

The Karcher car wash is a small-sized hand-held electrical appliance with a high-pressure pump, designed for self-washing cars. The unit is produced by the company of the same name, created in 1935 by the young German designer Alfred Karcher, which specialized in the production of heating equipment. However, already in 1950 the company produced the first high-pressure washer in Europe with a water heating function. Since 1974, the company has completely concentrated on the production of washing machines and changed their colors from blue to the world famous yellow , and since 1980, the plant has significantly expanded its range of equipment and entered the world market with it.

However, Karcher car washes became available to domestic consumers relatively recently - in the early 2000s.

It was at this time that the company launched a line of heavy-duty washing equipment capable of not only washing vehicles, but also renovating house facades and performing dry cleaning. Karcher washes immediately gained great popularity among car enthusiasts and took their rightful place in the Russian market.

High consumer demand and a large number of positive reviews of Karcher products are due to a number of important advantages of this technology.

Compared to a stationary car wash, a mobile unit significantly saves the car owner’s time. Now, in order to get your car in order, you don’t need to go to a car wash station and wait your turn. Washing a car can be done directly in the garage, providing for the timely disposal of waste liquid into the storm drain.
The manual method of washing is considered less “traumatic” for the car, and prevents scratches on the paintwork.
All Karcher products are provided with a warranty of up to two years, according to which in the event of a malfunction, which, however, happens extremely rarely, the unit will be repaired free of charge at any service center.
The devices are quite multifunctional and are not limited to washing cars. With their help, you can clean the facade of a building, terrace, swimming pool and garden alley from dirt.

However, along with the obvious advantages, sinks still have disadvantages. These include the high cost of some samples and the need for strict adherence to safety measures when using the unit. The latter requirement is due to the fact that high-pressure washers are quite dangerous devices, and if used carelessly, they can easily break glass or injure a person.

Reviews of Karcher K 5 Basic

Advantages: The gun is very light, and the main thing is the torch - a pressure of 145 bar is enough to make an excellent torch, now washing the machine is a pleasure.

Disadvantages: The biggest disadvantage for me is the hose, it is rigid and there is nowhere to wrap it around the sink. And separate brackets, like on the Premium, for example, are not on sale anywhere, but all the connectors are on the sink. and this is a minus. Next, the wire is placed behind the sink in a mesh pocket. in principle, no problems, but still a so-so solution

Pros: Cleans great! I bought the car at the end of January, I haven’t washed it even once because it gets scratched at the car wash. We bought it the other day, it’s expensive (but what should we do? Should we take a Chinese one? It’s a lottery).

Comment: Fire washing, I bought it because I live in a private house. Works great! What can you say, a nickel, manage for a nickel! There are a lot of details about washing on YouTube, so I’ll keep it short! If you don’t mind 15,000, feel free to take it, you won’t regret it!

Advantages: Water cooling, good performance, including pressure, metal case and other advantages described by the manufacturer and users

Disadvantages: Everything has them, on the K 5.520 model everything is within reason

Disadvantages: I didn’t like the plastic carrying handle, it is inserted from above without fixing, I’m afraid to lift the sink in case it falls out. There are no devices for securing the gun and attachments; you have to store them separately, but considering the lower cost, it’s forgivable. Well, it’s not even a drawback, but a feature of Karchers - you can’t turn the nozzle’s spray pattern, you have to turn it together with the gun)

Comment: Be sure to buy a fine filter, it costs about 1000 rubles. The foam nozzle from Karcher is sad, immediately take the brass MJJC from aliexpress, price 1300 rubles. There is no running water in the garage, I installed a 200 liter plastic barrel, I bring water in cans, and the water pump is nearby. It works from a barrel without any problems, you need to wash the car with 50-60 liters, the pressure is good, it feels no worse than from running water.

UPD - I am adding to the review. The plastic handle on top will not fall out, because... when it was necessary to remove it, they couldn’t pull it out: D

Advantages: Assembled in Italy, strong pressure, quiet operation compared to Bosch, high pressure hose. 8 meters is a huge plus

Disadvantages: the torch is not adjustable like a Boche, it only reduces the pressure, the kit does not include a rotary nozzle, and no foam foam.

Comment: Before this I used a Bosch 110, it worked for 8 years, of course, the 5 wash is of a different level and power, but I would like it to work just as well, but it’s a pleasure to wash, you’ll buy more attachments over time.

Advantages: Ease of use, compactness, components.

Disadvantages: None yet.

Comment: I’ve been using the Kerfig car wash for a year now and for me washing my car has really turned into a pleasure. The device is very convenient and reliable, it works without failures and does not malfunction. There are plenty of nozzles, the hose is long and flexible. The power is as much as 140 bar - there is simply no chance for dirt to remain) The engine is reliable, it does not heat up during operation in the summer. I separately recommend buying a fine filter and a normal foam filter - and you will be happy!).

Advantages: The cost of this device is not cheap, but it is worth it. The maximum pressure of the Karcher k5 Basic mini washer is 145 bar, and the minimum is 20 bar, it has an electric motor, overheat protection, and automatic shutdown.

Comment: During operation, the device does not make much noise, unlike other similar ones. The handles for carrying the sink are very convenient. There is also a retractable handle and large wheels, and a fairly long power cord.

Advantages: hose 8 meters, works quietly, very powerful!

Disadvantages: there is no attachment of the pistol to the body.

Comment: I was choosing between Shtil 108, Bosch 42-13 and this one! On the recommendation of friends, I took a Karcher and did not regret it!

Advantages: hose 8 meters, works quietly, very powerful!

Disadvantages: there is no attachment of the pistol to the body.

Comment: I was choosing between Shtil 108, Bosch 42-13 and this one! On the recommendation of friends, I took a Karcher and did not regret it!

Comment: I bought it for 20k for my home. It washes perfectly. but I think it's a little expensive compared to other brands, but it's worth it.

Advantages: hose 8 meters

Disadvantages: received a defective product from the store

Comment: after connecting at home I discovered a leak from the high pressure hose connection

High-pressure washers have different configurations, and first of all we mean nozzles on the gun, different types of which allow you to:

A high-pressure washer immediately brings to mind the image of a salon where cars are washed. This is, of course, true, because such devices are also used for cleaning cars. But design features, operating modes and additional functionality make such units universal, and allow them to be used in many areas where high-quality and effective cleaning is required.

How do high pressure cleaning devices work?

First you need to understand how such washes work and what makes them effective. Let's analyze the design. Each Ministry of Internal Affairs has:

Also, such devices are equipped with various attachments and may have additional functions, for example, heating water.

How does a pressure washer work?

What equipment is available for high pressure washers?

High-pressure washers have different configurations, and first of all we mean nozzles on the gun, different types of which allow you to:

change the width of the jet;
penetrate into hard-to-reach places;
Clean different surfaces, from cars to sidewalks, with high efficiency.

In addition, each manufacturer, complete with the sink itself, also includes branded nozzles patented by the company’s engineers. They have various modifications and effectively cope with any type of contamination or simplify the operation of the entire unit.

Pressure washer gun and hose

You need to pay special attention to these two modules, because the convenience of using the sink depends on them. The nuances are as follows:

It would also be a good idea to have a safety lock on the gun that blocks the water supply in case of unforeseen circumstances. In addition, do not forget about personal safety equipment - when working, it is recommended to use safety glasses to protect your face and eyes from splashes and dirt washed away by the pressure.

Motor and high pressure pump

The lifespan of the sink and its maximum power, as well as the energy consumed during operation, depend on these parts. Household sinks are usually equipped with electric motors, which allows you to set the water pressure within 150 Bar, and the motor design copes well with constant activation and shutdown.

The choice of pump must be approached responsibly. In budget models it is made of plastic, like the pistons. It is better to make sure that the pump is made of metal, and the pistons can generally be cermet or steel with a stainless coating.

Which pressure washer should you choose?

When talking about how to choose a high pressure washer , you need to first think about saving your own resources. Thus, there are several types of sinks, divided by power. The higher this indicator, the more energy the unit consumes and the more expensive its maintenance. The following is clear:

Pressure washers should be compared based on personal needs. If you plan to wash your car several times a year, then there is no point in buying an expensive unit with many options. A small portable washer with a pressure of 50-70 atmospheres is quite enough.

Where to buy a high pressure washer?

The Automechanika store offers a wide selection of car washes - from domestic and foreign manufacturers. Employees will easily help you choose the optimal model, and a developed logistics system allows delivery to all regions of the country. Call and order high pressure washers - you should be surrounded by cleanliness!

Yes, it comes with 2 brushes – a standard one and one for animal hair. The latter allows you to easily and hygienically clean hair from any floor covering.

Design and principle of operation

Karcher manual high-pressure washers consist of an electric motor, a pump, a flexible hose system and additional equipment.

The electric motor of all models of washing equipment is equipped with a water cooling system, which prevents its overheating that occurs due to heavy loads and increases its service life. Such motors operate much longer than their counterparts equipped with an air cooling system and show higher performance. Most models have engines with a power of 1.4 to 2.5 kW, but there are also stronger models with a power of 3 kW. In addition to electric models, the company also produces autonomous devices. They do not depend on electrical power sources, having, instead of an electric motor, an internal combustion engine.

Such models are completely energy independent and can be used in places where electricity is not available.

The pump is one of the most important components of a car wash and is responsible for the uninterrupted supply of water. Pumping units of household units are made of plastic or aluminum, which significantly reduces the cost of the devices and reduces their weight. However, such materials are not able to provide long-term continuous operation, and the average permissible time of their operation under load is no more than an hour. Then the device needs to be turned off and rest for a short time. More powerful professional samples are equipped with pump blocks made of stainless steel or brass. Although such devices are much more expensive than household units, they can function without stopping throughout the entire work shift.

A system of flexible hoses ensures the supply of water to the unit and its spraying through a special nozzle. The larger the nozzle diameter, the lower the water pressure, and vice versa.
Additional equipment includes nozzles, jet lances, hose reel, foam sprayer, brushes and pressure-regulating gun. Some units are additionally equipped with a mesh filter.

The principle of operation of Karcher car washes is as follows: the rotating motor shaft drives the swashplate, which, in turn, causes the plungers in contact with it to perform reciprocating movements. The function of a plunger in an electric motor is similar to the function of a piston in an internal combustion engine. At the moment when the plunger goes to the lowest point, water is supplied to the pump through the inlet valve. After the plunger moves to the top point, excess pressure is created and the outlet valve opens synchronously. As a result, a stream of water enters the gun handle and, when the start button is pressed, is sprayed under high pressure. The dirt accumulated on the surface of the car cannot withstand the pressure and is destroyed.

Karcher car washes are classified according to engine power and type of design. Based on the first criterion, three classes of devices are distinguished: entry-level, mid-level and top-level models.

Entry level

Entry-level washers are not designed for intensive use, which is why they are recommended for owners of one car. You can use such devices for no more than 40 minutes twice a day, and the interval between washings should be at least 6-8 hours. This is due to the fact that all models of this level are equipped with plastic pumps, which are significantly inferior in their performance characteristics to pumping systems made of metal. The power of a mini-car wash varies between 1.3-1.6 kW, productivity is 330-410 l/hour.

The water pressure in such models does not exceed 140 bar, the cost ranges from 4,000 to 8,000 rubles.

The advantages of entry-level household machines are their compactness, low cost, durability and light weight. The disadvantages include low water jet pressure and the ability to service only one car.

Middle class

Middle-class models belong to semi-professional washing equipment and represent the largest group of devices. Their power varies from 1.7 to 2.1 kW, operating pressure is 120-145 bar, and productivity reaches 510 l/hour. The pump has an aluminum design, which allows servicing 2-3 cars per day. Units of this class are equipped with a tank for detergents and can be used for washing facades and garden paths. The cost of such devices ranges from 15,000 to 30,000 rubles.

The advantages of middle-class models include their versatility and versatility ; the disadvantages include high cost and somewhat modest basic equipment. Most accessories, such as hose attachments, check valves and filters, must be purchased separately.

High class

High-end sinks belong to the category of professional equipment and can be used in car washes and car depots. The models are equipped with engines with a power of 2.5-3 kW, are capable of consuming up to 600 liters of water per hour and have a pressure pressure of up to 160 bar. The water pump is made of high-strength brass and has its own cooling system. This allows you to continuously operate the equipment for up to several hours a day and use it to service several cars or a bus. Such devices cost from 25,000 to 32,000 rubles.

The advantages of top-class machines include greater power, high productivity , long service life and the ability to cope with complex contaminants. Moreover, many samples are equipped with brushes for contact washing, which allows for high-quality cleaning of the bumper and rims. Among the disadvantages are the large size of the units and their high cost.

Portal automatic car washes

It is also worth highlighting the Karcher portal automatic washers, which are a stationary 3-brush structure, for the manufacture of which steel that has undergone a hot-dip galvanization process is used. Such complexes are designed for a large number of cars and are capable of washing from 300 to 1300 cars per month. Thanks to the presence of large units, the height of which reaches 2.8 m, with the help of Karcher you can wash not only cars, but also minibuses.

In addition, portal structures are equipped with dryers that instantly blow air over a clean body, preventing the appearance of smudges.

Mini-wash design

The models of compact car washes under consideration are designed simply. Their design is represented by the following elements.

The electric motor creates energy for the operation of the mini-wash. Most models of these devices are equipped with electric motors with a power of 1.4 to 3 kW. Karcher equips its mini-washers with water-cooled engines. These systems, providing effective cooling, protect the engine from overheating and increase continuous operation time. Thanks to this, such engines provide mini-washers equipped with them with high performance and a long service life.

The pump supplies water to the device. As mentioned, household models of mini-washers are equipped with plastic or aluminum pump blocks with valves made of the same materials. This results in the relatively low cost of such devices, but imposes some restrictions on their functioning. First of all, they apply to the time of continuous operation. For mini-washes of this type it is about an hour. For each device, the exact value of this parameter is indicated in the instructions. Professional models are equipped with pump blocks made of stainless steel or brass. Such mini-washers are designed for continuous operation over several work shifts.

A flexible hose connects the device to the nozzle. The smaller its diameter, the higher the water pressure. The nozzle sprays water onto the surface to be treated.

Additional equipment – this category includes some parts that increase the ease of use of the mini-wash and expand its functionality. They are presented:

nozzles;
jet tubes;
hose reel;
foam sprayers;
brushes;
pressure regulating pistols.

The lineup

The range of Karcher mini-washes is represented by electric models of three power classes, autonomous models powered by an internal combustion engine, and automatic portal washers.

The Karcher K3 model is an entry-level device and is equipped with a 1.6 kW electric motor. The unit is capable of passing through itself up to 380 l/hour, processing up to 25 m2 of surface during this time. The working pressure can be adjusted from 20 to 120 bar (2-12 MPa), the water temperature at the outlet of the nozzle reaches 40 degrees. The current frequency is 50-60 Hz, the weight of the device is 5.8 kg, the dimensions of length, width and height are 27.5x27.9x80.3 cm, respectively. The model is equipped with a Quick-Connect device, with which a 6-meter hose is connected to the unit with one movement of the hand, as well as mud cutters and a Vario-Power jet lance, which allows you to regulate the working pressure. Price 6,990 rubles.