High pressure washer karcher DIY repair

In detail: karcher high pressure washer DIY repair from a real master for the site my.housecope.com.

Greetings, dear readers of my blog! Today I will talk about how to use the device correctly and what malfunctions of a pressure washer can occur when using it in a domestic environment. Today, many car enthusiasts often buy devices for “home” washing their cars. And rightly so, because you don't want to pay extra money for such work, which you could do yourself! Moreover, it should be noted that the purchase of such a device does not at all limit you in its application only in relation to the car... The functionality of the device allows you to use it for various household purposes, so such a device will be a very useful accessory in everyday life.

In order for the device to serve as long as possible, you will have to observe all the points of careful operation, which are indicated in the instructions for use. Moreover, when using such a sink, the following rules must be observed:

Now it's time to tell you about the repair of pressure washers. Even with proper operation, certain breakdowns occur, which in any case need to be eliminated. This can be due to various reasons. In general, we will consider the main malfunctions and methods for their elimination.

Decrease in pressure. This is one of the most common problems that prevents you from getting the most out of your washer. In this case, productivity drops, which increases the process time. Most often this happens due to damage to the oil seals. These parts can break due to prolonged use or due to the presence of substandard impurities. This breakdown must be taken seriously and the part replaced immediately. Otherwise it can lead to more serious problems, so it is best to fix it right away. Often you can change them with your own hands, since there is nothing complicated about it.

Video (click to play).

Damage to one of the valves can also result in loss of performance. In this case, you need to delve into the reason in more detail. In most cases, it is best to contact service. If the device does not turn on, then it is highly undesirable to try to make it yourself (you should also contact the service center).

In order to prevent such damage, be guided by the following provisions.

  • Carefully monitor the quality of the water used and avoid clogging.
  • Install filters. With their help, you can extend the service life several times.
  • Conduct prevention. Inspect it every month to avoid unexpected breakdowns.
  • Watch the voltage and change the oil in time! Then there will be no problem.

Nowadays, many models of car washes are presented on the automotive market. Each of them differs in its features and cost... I have studied this issue more deeply and have compiled a small list of the most, in my opinion, quality manufacturers.

  • "Champion". Very reliable and easy to use.
  • "Calm". Very compact and robust.
  • Hooter. Versatile enough as it is ideal for any job.
  • Interskol. It has high performance and reasonable price.

On this, dear friends, I say goodbye to you! Don't forget to read the updates and share the blog with your friends!

Karcher is a quality technique for professional cleaning or household cleaning.

But even high-quality equipment can fail with constant or improper use.In the article, we will talk about the principle of operation of devices, weak points of technology, main breakdowns and their causes, so that in case of collision with any of them you can know what to do.

Despite the fact that Karcher sinks are the leader in their industry, they also fail. If the Karcher sink does not turn on one day, you do not need to panic, in most cases the problem is not serious and can be easily corrected. Some of the most popular reasons why the sink may not turn on are:

  1. Stuck control valve piston. This problem leads to the fact that after turning the control knob, the device still does not turn on, since the piston does not move and cannot reach the desired activation lever.
  2. Breakdown of the relay.
  3. Piston breakage.

In 90% of cases, if the Karcher does not turn on, the reason is the sticking of the valve. Typically, this problem occurs due to the fact that it is through the valve that the detergents pass. As a result, it stops responding to switching on.

You can repair the system yourself if you have basic technical and electrical skills. Sticking of the valve can be due to the constant passage of detergents through it, which are supplied through the plastic nipple.

To fix the problem, you need to disassemble the sink body. This will require a screwdriver, hexagons and sprockets, or you can use a screwdriver to make the process go faster. Be sure to check that there is no water inside the sink and unplug it.

First you need to disassemble the case, then remove the clamp that secures the motor. The valve we're interested in is hidden under a plastic nipple, but you can't get it, you can only check the valve travel. To remove the valve itself, you need to open 4 hexagons on the body, disconnect it, remove the electrical block and divide the lower part. You will see the valve tip pressing against the disconnect end of the circuit, which will prevent the sink from turning on.

Now you need to clean its seat, wipe it with grease, and if the spring is bent, unbend it. However, if you do not have technical skills, it is best to contact a service center.

To reduce the risk of such a problem in the future, you should buy a foam lance - the foam is much lighter than the stringy detergent.

To understand what exactly broke and why the sink stopped working, you need to understand how Karcher works. The operation of this car wash is based on high-pressure technology, water is supplied under pressure, such a device allows you to cope with any pollution as quickly as possible and with low labor costs, with its help you can wash a car or put in order a site.

The design of this device is based on a powerful synchronous electric motor, its power can reach 3 kW. The motor rotates against the swash plate attached to the shaft. In this case, the plunger is in contact with the washer, making translational movements, and when the plunger moves to the lowest point, water is supplied through the inlet valve. And when the plunger moves up, overpressure builds up and the high pressure outlet valve opens.

Modern models of Karcher sinks are equipped with water-cooled electric motors, which makes it possible to increase the service life of the engine and prevents it from overheating during operation. Accordingly, the sink can work longer without interruptions, which means that its productivity also increases.

German-made household mini-washers are usually equipped with plastic or aluminum valves, which makes the device cheaper, but reduces the functionality of the device. Sinks with plastic or aluminum valves cannot work for a long time without overheating; they often require recharging. The average operating time without interruption for such devices is 60 minutes.

Professional pressure washers use a brass or stainless steel pumping unit.Accordingly, the operating time without interruption for this sink will increase. Some professional-type models are capable of working several shifts without interruption.

In order for the minisinks to break less often, that you need to operate them correctly, the device should not be left for long breaks with high pressure in the system. This will create additional stress and lead to premature wear of the elements. It is also recommended to use an automatic shutdown device - it is installed in all modern car washes and can save up to 20% of electricity.

Speaking about the safe operation of the sink, you also need to figure out which oil to fill in Karcher. It is recommended to use only high-quality oil in order for the sink to work stably and without interruptions, as well as to prevent its premature breakdown. It, like fuel, influences the life of the sink and the result during the operation of the generator. During production, the manufacturer fills in the necessary oil on his own and usually no replacement is required - the amount of oil is enough for the entire life of the mini-washer. If we are talking about a household model, then a really factory filling should be enough. But when using professional washers, the need to change the oil sometimes arises.

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Depending on the design features of the model, lubricating oil can be poured separately, into a special reservoir, and together with fuel when refueling. The viscosity index of the oil and its marking must be taken into account. Viscosity indicates the time of the year in which the oil can be used. There are winter, summer and universal varieties, universal ones include SW-20, 10W-40, 10W-50, 3W-30 and many others. In winter, the viscosity of the oil should be 0-20W, and in summer - more than 20W.

You can use multi-purpose oils such as CD or SG, they are suitable for any time of the year, for any type of fuel. Otherwise, S-marked oils should be used for diesel generators.

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Washing a car, cleaning a garage or tidying up a summer cottage - all these works are greatly facilitated by a mini-wash. Some models are quite suitable for flushing pipes or concrete mixers. Unattractive and difficult work like cleaning stables or washing agricultural machinery is greatly simplified with the help of this miracle device. The topic of today's publication is the repair of a pressure washer with your own hands, because any technique tends to fail after a particular period of operation.

In order for the mini-sink to serve as long as possible, it is necessary to follow the not very complicated rules for the safe operation of the device specified in the instructions for use:

  • Remember to ensure that there is sufficient water in the sink. If this rule is neglected, the pump can quickly fail.
  • Take care not to bend the hose. Otherwise, the device will fail due to the excess of the water level. It will not be superfluous to make sure that you do not step on the hose or run over it with the wheel of the device.
  • Choose a mini-sink in such a way that it is equipped with a hose reel. In this case, the working life of the device will be much longer.
  • Remember to drain the water after you have finished using the appliance. Especially if you have operated your sink at low temperatures. Water, turning into ice, will provoke a breakdown of the device.

Important! It is equally important to release pressure from the pump.

  • Use your mini-sink very carefully. Water is supplied at high pressure, so even small dents may appear on the surface of the car if used carelessly. Therefore, you do not need to bring the device too close to the surface to be treated.

Important! It is strictly forbidden to point the device at people or animals, as this may cause injury.

  • If you need to take a short break from work, never leave the device turned on.
  • Make sure that the water used is free of foreign matter.
  • Change the oil in time.

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These preventive measures will protect the worker and those around him. But this does not mean at all that the sink will work forever. Even with the most careful operation, breakdowns cannot be avoided. Consider the rules for repairing a broken Karcher car wash.

Most often, bearings fail over time, which serve as a support for the washer acting on the valve.

The symptoms of bearing failure are as follows:

  1. Unstable wash operation. In this case, the engine often does not start; a knock is heard inside the device.
  2. It also happens that the engine does not start at all, it gets very hot when turned on.

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Do-it-yourself mini-high-pressure washer repair is the following set of manipulations:

  • Remove the hose from the device together with the “gun”.
  • Disassemble the case, remove the motor.
  • Unscrew the 6 self-tapping screws located with an "asterisk" from the motor.
  • Open the box with the switch, remove the capacitor and power terminals that come from the switch.

Important! Watch carefully so that the details are not lost: it will not be possible to purchase something similar in the store.

  • Place the sink carefully on a horizontal surface, motor downward.
  • Prepare a container to drain the oil.
  • Unscrew the bolts by 13 (there are 4 in total).
  • Drain the oil into a previously prepared container, put the rubber seal aside.
  • Unscrew the bolt located in the center, having previously clamped the shaft with a wrench on the other side.
  • Replace worn bearing.
  • Assemble the mini-sink in the reverse order, remembering to fill in new oil.

Important! The original oil is difficult to find, so use a suitable analogue.

In addition to bearing failure, the following failures also occur:

  1. Reducing the pressure. The performance of the device decreases, the time for performing washing procedures increases dramatically. The cause of this trouble is damage to the oil seals. Oil seals fail due to prolonged operation of the sink and the presence of impurities in the water. You can solve the problem by replacing the oil seals.
  2. Valve defective. It is hardly possible to make an independent repair, therefore it is much wiser to contact a service center.

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