DIY high pressure washer repair

In detail: DIY repair of high pressure washers 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!

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Before we understand the reasons for the breakdown of sinks, let's first consider the variety of devices of this type. Different types of sinks are used depending on the needs of the user. The difference is in the way of operation and productivity. This range of high pressure washers needs to be described in more detail:

the main purpose of washing cars (cars, trucks), special equipment;
further in importance: washing of courtyards, workshops, building facades, using a high pressure extension hose;
the third function (for industrial devices) pumping out liquid from flooded places;
with the use of a special nozzle-brush, you can do sewage cleaning using a pipe cleaning kit;
By adding special tools, you can organize the foam treatment of various painted surfaces by using a jet tube with a nozzle.

There are several types of sinks:

household - this is the most acceptable equipment for cleaning dirty surfaces mechanically in any hard-to-reach places. The difference between domestic and industrial washes is only in their compactness and mobility, low weight and size, which allows you to enjoy the result of cleanliness yourself, to save time at home, in the country, in the garage.
with water heating - designed for organizing cleaning of hard surfaces by double washing (high pressure, hot water).
without heating water. For example: Karcher K2 minisink
autonomous - access to the power grid is not necessary, performance is provided by a powerful gasoline engine. For example: autonomous device Karcher HD 9/23 G of the Advanced series

After winter, car enthusiasts often face the problem of building up operating pressure in a car wash. It seems that the car wash is working (the engine is noisy), but the pressure of the jet is not enough for efficient operation. In such cases, most often the reason lies in the malfunction of the bypass valve.

But before repairing, you should rinse and clean the nozzles well. If the removal of contaminants did not help, then this means that the bypass is jammed, and it releases pressure into the return line, as a result of which, even after releasing the trigger of the gun, the pump continues to work forcing the water to circulate in a circle. To check, you can simply change the jet nozzle to a mud cutter, the problem remains, so we can safely proceed to the repair.

The essence of the repair is to flush the valve and its seat where it is inserted. To get to it you need:

- unscrew the protective external elements of the car wash

- dismantle the water intake pipe

- pull out the bypass valve with pliers

- we clean it from dirt and lubricate

- collect in reverse order

Usually, all repairs can take about an hour.

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:

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

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:

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.
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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Today we will talk not only about the repair technology, but also tell you how to use this device correctly so that it will serve you for a long time and become an indispensable assistant in household chores!

Before proceeding to consider the types of malfunctions and repair methods, it is necessary to outline a number of rules that will significantly increase the service life of your device, as well as avoid elementary breakdowns.The most important thing is to carefully study the operating manual before using the device, it contains basic tips for the careful use of the device. In addition to the standard requirements, the following should be highlighted: Image - DIY repair of Makita high pressure washers

Decrease in pressure in the apparatus. When this problem occurs, the machine may not be able to take full advantage of all the functions. This is one of the most common problems with these devices. As a result, productivity drops dramatically, leading to a significant increase in cleaning time.Most often, the reason for this is failed oil seals. Their breakdown can be caused both by the duration of their use without replacement, and by the presence of harmful impurities. This problem must be solved immediately and the defective part replaced. After all, this can lead to even more serious problems. Replacing parts is not a complicated operation, so you can do it yourself.Loss of performance can also result in the failure of one of the valves. This breakdown is much more complicated, and it is difficult for a non-specialist to fix it, so in this case it is better to contact a service center for such equipment.So, the sink began to work intermittently and the pressure dropped significantly. How to repair? In this case, we recommend doing the following work.The sequence of disassembling the apparatus is as follows.

We dismantle the casing from the sink disconnected from the network.

We turn the device upside down and remove the plastic pipe, usually it is fixed on three bolts, so here we need a hex wrench.

We remove the valve using pliers.

We inspect, wipe and disassemble for components.

We lubricate the parts and assemble them in reverse order. Do not forget to check the strainer, it is located on the pipe. It may be torn, and therefore contamination ends up on the valve. In this case, it must be replaced.

In order for your sink to serve you much longer without breakdowns, we advise you to adhere to the following operating rules:

monitor the quality of the water used, do not use dirty water, with impurities;
use filters, this will extend the service life of the device several times;
preventive monthly inspection will help to avoid unexpected breakdowns;
do not disregard the supply voltage and change the oil in a timely manner.

Today on the market of goods for car maintenance there is a wide selection of pressure washers, which differ in their functionality, quality and, of course, cost. Of the variety of manufacturers of such devices, the following, in our opinion, are the most worthy and high-quality ones:

"Champion" - is distinguished by its reliability and ease of use;

"Karcher" - a high-quality and reliable device, a wonderful and well-organized service anywhere in large cities;

"Calm" - compact and reliable sinks;

"Hooter" is a universal high pressure washer that can be successfully used not only for cars, but also for household work;

Interskol - the unit shows good performance and affordability.

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For a long time I have met false sellers in the network who sell this trash under the guise of the original. And moreover, there are offered different models of Makita tools at a price three times lower. What they just do not come up with for successful sales. And collected in Poland. and European assembly. Stator anchor all spare parts are original, only assembled by Poles. Well, in short, anything. but the most important thing that captivates a potential consumer is the price. and many are underway.
Finally I got this shit.
The nameplate immediately arouses suspicion

There is clearly something wrong with the spindle lock.

Well, self-tapping screws immediately give out a catch.

I think okay, maybe it seemed. What's with the brushes? But there is also little pleasant.

We climb further. Maybe the Polish collectors will surprise and deliver everything original from the Makita.
But even here an ambush awaits us. typical anchor of the Chinese spill

the bearing was set to 6000 instead of 6200, and an elastic band was tightened, which dangles in the housing. although as you can see the 200th could be dressed.

The stator goes in parallel and also without any protection, as stated in all advertisements for the sale of this counterfeit.

Everything seems to be obvious here, an ordinary Chinese soft starter. not round like a resistor, but fits neatly ..

Well, the funniest thing. Her handle flew off, stupidly under its own weight. According to the owner, he just put it on his shoulder. And what would have happened if during work.

I look at the pictures and was inspired by a video about impact resistance from rem273

I didn't get to the gearbox, maybe tomorrow, if there is time.

I look at the reviews people like to read, I also decided to drop a small photo-review of the Makita UT1250 mixer. I think it will be useful to many and will protect them from dubious purchases.
To begin with, a description from the site. I will not give a link, Google finds it without problems.
“Electric mixer Makita UT1250 is an irreplaceable tool in construction and repair business. With it, you can easily mix paint, mortar, plaster, glue and much more. The tool has comfortable grips, which guarantees a secure grip when working. It is also worth noting a reliable mechanical gearbox made in an aluminum alloy casing. The key to long-term and trouble-free operation of Makita UT1250 is a large motor power (2000W), reliability of the gear unit and high quality of components and materials. "
There is also about the guarantee and the manufacturer. I think this is not so important anymore, although it is interesting.
The mixer looks like a mixer, nothing special. The handles are comfortable, no doubt about it.

power of 2 kW is the guarantee of long-term and trouble-free operation. Well, yes.

The cable is frankly bullshit, there was no frost yet, but it had already peeled off all over.

The fork also did not heat up nirazu.

That's what I liked, that here the Makitovites thought over and finally made the cover for the button separately from the entire part of the case, which is very convenient when disassembling and replacing the button. Not like the shitty Chinese usually have that you need to unscrew the entire handle entirely.

The button is really some kind of completely flawed, Makitovites obviously saved

And the contacts are reliably made, not warmed up nirazu.

Go ahead. The reliability of the gear unit and the high quality of the components are declared. There is even nothing special to comment on.

The gear is on a key and dangles on the shaft like g. But in the hole (C)

I was surprised by the variety of bearings that Makitov residents used in this device.
this is the "well-known" PIT

And also WTOO, Andryukha I know praised more than once, so the bearings are exactly what you need.

And even with a plastic separator, just a masterpiece. what a good fellow Makitov.

At anchor in general, the bearings are just a bomb!

On the engine, the Makitovites also clearly saved money, a Chinese trace is clearly visible. Or Latvian, I don't know how to do it right. But in the description, the components are declared of high quality. Whether to believe this, let everyone decide for himself. Only about 2 kW is clearly too much.

The brushes are shitty, the springs are tight. The rope has already hardened from overheating on one brush and will soon fall off.

What can I say in the end.Anyone who buys this kind of makitu is either a complete loshara or an idiot. Yeees. as they say today - the Makita is not the same.

Finally, the building was completed for us, we moved and opened.

A gun dripped from the Lavor Phantom 19 sink. I unrolled it, inside everything is almost disgraceful: the hose from the sink enters the valve in the L-shaped plastic tube.
The vertical part of the tube has leaked out - water splashes out of it through the micro-slots.
I tried to seal the cracks in different ways: I poured the “moment” with glue, melted the electrical tape, wrapped it with fom-tape and “upset” with a technical hairdryer, smoothed the plastic in the place of the cracks with a soldering iron, and covered it up with cold welding.
None of this helped: the water still makes its way through the micro slits that are not visible to the eye.

How can the plastic tube be pressurized?

ps The new gun is comparable in price to the sink and its purchase is not economically justified.

It often happens that devices that have become habitual fail. The equipment will have to be handed over for repair, bought a new one, or try to repair it on your own. It may well turn out that self-repair will not cause difficulties.

The low-cost high-pressure car wash (HPH) Elitech 1500 PC has served several seasons, having repeatedly paid for itself. One fine day, my favorite car wash refused to work. The required pressure was absent, and water flowed from the body.

After removing the plastic cover, the problem was identified. Due to the fact that the AED was left to winter at the dacha with water inside, the manometric shut-off valve was damaged. The water inside froze, and the ice damaged the plastic case.

An attempt to fill the crack with glue did not help, a fountain gushed out from under the plastic pusher, water got into the case with a microswitch (photo 1). It was decided to replace the faulty part.

Finding a spare part caused the greatest difficulty. Substitutes available on the Internet were offered for several thousand rubles, which is almost half the price of a new AVD. The market did not help either, the sellers could not even identify the valve. Oddly enough, the necessary spare part was found in an official service center.

The valve article (0901081280) was found on the Internet. It turned out that it is offered complete with a switch and a set of wires (photo 2), and the price is less than 300 rubles. Well, such a renovation is economically justified.

It is most convenient to unscrew the faulty valve with a head by 24 (photo 3, 4, 5). A serviceable part is carefully inserted (photo 6) and screwed into place. The switch body is connected to the valve. It is necessary to press down with effort on the body (photo 7). Without collecting the casing, water is connected to the mini-sink and the operability is checked. Everything, the repair is over.

For reassurance, you can also replace the switch body at the same time, because water got into it. This is also easy to do. First you need to open the black block that contains the wires. You need to unscrew two screws (photo 8 and 9). It is better to remember the position of the wires in the block right away, otherwise you will have to tinker with their reverse laying (photo 10).

Next, the wires are disconnected from the old switch body and new ones are connected. Assembly is carried out upside-down. Now the repair is over for sure.

Andrey Filatov

The sink began to work intermittently and there is no pressure. What to do? How to fix a Karcher sink with your own hands?

The reason you described may lie in the incorrect operation of the water pump. To fix it, you need to: first of all, turn off the power supply, then remove the plastic casing (case) and get close to the pump itself. The pump should be removed and disassembled in detail, this is the only way you can determine the cause. Wear of O-rings and much more visually immediately after disassembly, all defects are clearly visible. Often, solid particles get into the water, which can disrupt the operation of the pump. When the pump is disassembled

when all the parts are removed, they need to be put in warm water with citric acid so that all the old grease goes away.Then wipe everything thoroughly and replace every part with defects.

You write that there is no pressure, most likely the reason is in this bypass valve

But I will immediately emphasize that there are quite a few models of Karcher high-pressure washers, the reasons for breakdowns are even more, because the technique is rather complicated.

Correct diagnosis is 90% of the repair success.

The valve that I wrote about above can stick, the reason is dirt.

Sometimes it is enough just to rinse it, clean it and lubricate it, this is a collapsible unit, it is better to take a branded Karcher lubricant, in our case we need silicone lubricant.

We remove the casing (usually it is 8 bolts), put the device lying down with the wheels up.

Next, we remove the pipe (plastic), here you need a hex key, it is held on three bolts.

We take out the valve itself with pliers.

Examined, rubbed, want to disassemble into components.

Lubricated, assembled the sink in reverse order and started it.

If everything is in order, then we have managed with small efforts (investments); if not, we change the valve to a new one.

When reassembling, check the mesh filter, it is located in the branch pipe (see above), the mesh may be torn due to this, dirt gets on the valve.

The filter is only cleaned, it is not repaired, if it is torn, we buy a new one and replace it.

If there are interruptions in work in Karcher, as you correctly noticed this may occur due to a loss of pressure, then the water supply stops until the device reaches the required pressure and so on constantly.

As I noticed, there can be several reasons, at least two.

You should not go straight into the water pump, first you need to look at the contamination of the filter and the water supply system in general, it is quite possible that there is simply no access to water.

If everything is normal with pollution, or rather everything is clean, then check the tightness of the system, there is a possibility that the pressure is being released due to water leakage from the system, perhaps the hose just cracked or the cuff is leaking.

If the first two examinations did not reveal anything, then the water pump is diagnosed and repaired.

They call it correctly - pump.

I personally recommend installing a new pump assembly, due to the fact that in the old one there may be a production and replacement of a repair kit will not work.

And for the price there is not much difference, so the pump costs from 2000 to 5000 steering wheels, if assembled, and repair kits from 1000 to 4000 rubles.

To choose a pump, you need to know the Karcher model, and in some cases, how it looks.

Here is an example of replacing the pump for the karcher k 4.75 model

Quality spare parts. Obligatory delivery. Reliability.

We do not sell fake spare parts. The advantage of original spare parts is due to the fact that they are manufactured at the same factories as the spare parts that are supplied during production. We give a 100% guarantee that we will refund the money if the spare part is no longer supplied or discontinued.

To cope with dirt on your own in your summer cottage, in the garage, or just wash your car, you no longer need to pay money to strangers, just buy a Makita pressure washer. Experts unanimously note its reliability, which is provided by asynchronous motors, three-piston pumps that can withstand heavy loads and good protection against overheating. With the Makita pressure washer, you can quickly and easily tidy up your walkways, inventory, wash your car, trash can, and much more.

It is not surprising that when something goes wrong with a pressure washer and it stops working, it becomes an unpleasant event for its owner. In this case, you have to quickly look for a reliable service where they will do repair of a Makita high pressure washer in Moscow, and they will take not very big money for it.

More than twenty years ago, SMT-Service entered the market for the repair of complex household appliances.Over the years, we have accumulated a lot of experience, have assembled an excellent team of specialists and are always ready to help you. If your pressure washer breaks down, then you just need to call our company, and we will take care of all other concerns.

Quick response to the request
Moderate prices
Repair only after high pressure washer diagnosticsMakita on modern equipment
Save time
Individual approach
Competent specialists

We always try to comply with the agreed terms of the repair, realizing how important it is for you. To prevent similar situations in the future, we offer our customers continuous service for their complex household appliances, because this significantly reduces the risk of future breakdowns.

If you want to get fast and reliable high pressure washer repair Makita, then call the company "SMT-Service"!

according to the purpose of the apparatus;
by functionality;
types of application of specific nozzles;
possibilities and methods of using cleaning chemicals;
by type and ability to preheat water.

Any household high-pressure washer is not complete without a high-performance and pressure head pumping unit. All causes of a high pressure washer malfunction can be divided into pump malfunctions, its electrical part and breakdowns of individual units on all kinds of installation accessories.

During its operation, the pumping part is subjected to the most basic loads during friction of moving parts, pressure on all components of the structure.

Therefore, you should constantly monitor the wear of the main parts of the pump and the electric motor, tighten loose fasteners in time and replace worn out and lost their functions units and parts of automatic control systems in time.

Consider a few of the most common and frequent breakdowns that are found on all brands of pressure washers.

Often, even on the "coolest" models of high-pressure washers, after a while, problems appear with the operation of the high-pressure automation, which is responsible for maintaining a certain value of water pressure in the installation.

At the same time, the pump starts to start when the consumable pistol is pressed, but after a few seconds the automation turns off the pump. At the same time, water from the pistol goes in a thin stream with absolutely no pressure, which can create a normally working device.

This problem can only be eliminated in service centers, but we will try to generalize this malfunction and try to figure out why this can happen.

High pressure is created by a high-speed plunger pump with multiple pistons (from 2 to 4), which is spun by an asynchronous electric motor.

In our case, the motor works, the pump with pistons spins up, but the contact group, which is responsible for the timely shutdown of the pump when a certain pressure in the pump is reached and before the trigger of the pistol, does not work at the right moment and the pump does not create a pressure of a certain value.

there is a leakage of water from the drain hose or from the pump body itself;

possible clogging of the fine filter at the inlet;
the hole on the nozzle is clogged;

bypass valves on the water inlet system to the pump do not work;

the piston rod of the lever for turning off the electrical circuit of the motor (bypass), which is included in the automatic maintenance of high pressure in the pump, is seized;

the spring force has weakened, which should return the lever (bypass) to its original position when the pressure in the pump drops and the motor does not start on time.

All problems not related to disassembling the unit can be done independently: clean the nozzles, rinse the filter, try to check the fastening of the hose at the outlet and inlet nozzles.

If the pressure washer works intermittently, and you cannot fix its operation with simple actions, contact the service center to specialists.

There are times when the electric motor of the high-pressure washer hums (works), and water does not flow from the pistol when the trigger is pressed or flows under low pressure.

This can happen for several reasons that you can fix on your own:

The water tap is closed - open the tap.

The bypass valves at the pump inlet are clogged - check the operation of the valves by turning off the main valve and turning on the engine of the device, the hose will begin to flatten due to the discharged pressure.

Air has entered the pumping part of the device due to a loose fit of the supply hose to the sink - make the correct connection of the sink to the water main, let the pump run without connecting the high pressure hose to the nozzle. After 2 minutes of pump operation, water should appear without air bubbles. We turn off the pump and put on the high pressure hose and the gun.

Switch off the unit, disconnect the inlet main hose and use pliers to remove the fine filter from its seat. Rinse the filter from clogging in a stream of running water.

If the situation repeats, consult a specialist. The pressure relief valve stem of the high pressure maintainer may have jammed or the spring of this part may be weakened. Possible damage to the stem itself or to the rubber seal on the bypass.

After some work, your sink, when the trigger of the gun is closed, continues to work and does not disconnect from the mains.

Try to turn off the sink using the main switch on the unit body.

The contacts on the microswitch of the automatic pressure support system in the pump may have oxidized. Check the operation of the automation several times, turning the pump into operation manually.

If the situation repeats, you can try to remove the protective case from the sink and clean the contacts on the de-energized terminals of the pressure switch and on the microswitch.

If these measures did not fix the problem, contact the service center for help.

Over time, the pressure washer begins to fail when turned on, or it can suddenly turn off the engine itself.

These pressure washer failures can occur for a number of reasons:

Failure of the main switch.

Oxidation or damage to the power wires at the main switch, through which the pump motor is powered.

Breakage or overheating of the motor winding.

Jammed gauge valve in the chemistry supply system. Over time, as a result of oxidation of the space between the aluminum pump casing and the rubber or plastic gaskets on the bypass valve stem, it leads to the formation of rust and sticking of the valve in its seat and, as a result, to pump malfunctions.

All minor faults in the form of stripping the terminals, temporarily cooling the motor winding on a disconnected device, checking the electrical circuit of the main switch and similar problems, you can fix in your garage workshop yourself.

Larger problems associated with complete or partial disassembly of the pressure washer should be trusted by the specialists of the service center. They will strip the valve seats or replace the complete pump cover assembly with new parts. Fitting the valve seat and grinding it requires a special precision tool.

During the warranty period for the purchased unit, no independent repair work on the unit is allowed. In addition to external cleaning and installation and assembly work related to the preparation of the device for operation.

Unauthorized repairs or tampering with the design of the device will deprive you of further service and warranty maintenance of the unit.