Pressure Washers Rated Output 3 HP

High-pressure washers are cleaning machines that use a pump to pressurise normal household water in order to achieve significantly superior cleaning and degreasing power. These devices are used in both domestic and professional contexts, guaranteeing superior results compared to traditional cleaning methods.
AgriEuro offers the following types of pressure washers:

• Cold water pressure washers. These are the most common and most widely sold, using the domestic water supply which, once brought to high-pressure, provides formidable cleaning power. These machines are of fundamental importance, thanks to their ability to be used in a wide variety of applications. They can be equipped with a myriad of accessories that allow for easy cleaning of walls and driveways or washing of cars, motorcycles, bicycles and agricultural equipment. Generally, the most economical pressure washers fall into this category, but there are also highly professional cold water machines available for use in a wide range of sectors, such as construction and industry.
• Hot water pressure washers. Compared to cold water models, electric hot water pressure washers have an additional diesel boiler that heats the water to high temperatures, increasing the machine's effectiveness and cleaning power. This is thanks to the degreasing power of heat, which avoids the need for high-pressure or the use of aggressive detergents. However, the boiler increases the weight and size of the machine, reducing its manoeuvrability. These machines are highly sought after by professionals who have to clean particularly dirty or greasy areas or machinery, such as in workshops or the food industry. In this category of pressure washers, we can also find lower-end models suitable for hobbyist or semi-professional use.

• Petrol pressure washers. These tools are intended for use in places where there is no power supply, and for this reason they can be considered autonomous or independent machines. They are appreciated for the high power delivered by their engines, which in high-end models exceed 10 HP, allowing them to reach pressures and flow rates that are difficult to compare with single-phase electric machines. However, while combustion engines offer high reliability, they also involve higher purchase and operating costs than electric motors, as well as being noisier and less manoeuvrable due to their weight. These machines are particularly appreciated by professionals and companies for the high power delivered by their engines, which allow the water to reach pressures and flow rates that are difficult to match with an electric motor. Furthermore, and perhaps most importantly, the possibility of using them in any condition makes them a formidable machine in terms of versatility.
• Professional tractor-mounted pressure washers. Designed for use on agricultural tractors, they are powered by the tractor's power take-off. Ideal for cleaning agricultural equipment and paving.

Each type of pressure washer is designed to meet specific needs, with models ranging from domestic, lightweight and manoeuvrable to professional, more sturdy and powerful.

Pressure washers are mechanical devices that use the power of high-pressure water to clean various surfaces, removing dirt, algae, mud and other stubborn impurities that traditional methods cannot effectively eliminate.

These devices consist of:

• a high-pressure pump,
• an electric or combustion engine,
• various accessories that allow the water jet to be adapted to specific cleaning needs.

Pressure washers are used in many contexts, such as:

• Domestic: Cleaning gardens, terraces, exterior walls, cars and bicycles.
• Commercial: Used in commercial activities for cleaning facades, shop windows and outdoor areas.
• Industrial: In the industrial sector, they are used to clean machinery, industrial floors and other large areas.
• Agricultural: They assist in the maintenance of agricultural machinery and storage facilities.

Pressure washers are designed to ensure deep and rapid cleaning in various contexts, significantly reducing the time and effort required. The main advantages of these devices are as follows:

1. Time saving. Pressure washers allow large surfaces to be cleaned in less time than conventional methods, thanks to the high water pressure that loosens and removes dirt quickly.
2. Water savings. Despite the use of high-pressure water, pressure washers consume less water than a normal garden hose for the same job, as the water is used more efficiently.
3. Less effort. While conventional techniques can require significant physical effort, pressure washers rely on the sheer power of pressurised water to achieve similar or better results.
4. Versatility. With the ability to add different types of nozzles and accessories, pressure washers can be adapted for a wide range of cleaning tasks, from removing graffiti and stubborn dirt to gently cleaning garden furniture.
5. Elimination of chemicals. The force of the water jet often eliminates the need for chemical detergents, making pressure washers an environmentally friendly choice.

These features make pressure washers indispensable tools not only for domestic users and hobbyists, but also for professionals in various sectors such as construction, agriculture and industry, where effective and rapid cleaning is crucial

There are different types of pressure washers, each designed to meet specific domestic and industrial cleaning needs. Here are the main ones:

• Cold water pressure washers. These are the most common and versatile, suitable for most domestic and commercial applications. They use cold water and are ideal for removing dirt from resistant surfaces. They are generally cheaper and easier to use
• Hot water pressure washers. These use a boiler to heat the water, thus increasing the effectiveness of cleaning against grease and stubborn dirt. They are particularly useful in industrial settings or for cleaning machinery and greasy surfaces.
• Petrol pressure washers. Equipped with petrol engines, these pressure washers offer maximum mobility and power, ideal for areas where there is no electricity supply. They are frequently chosen in sectors such as agriculture and construction.
• Professional tractor-mounted pressure washers. Designed to be attached to and powered by a tractor, these pressure washers are intended for use in large open spaces and for applications requiring high pressure and flow rates.

When purchasing a pressure washer, it is very important to consider the technical characteristics of the model to ensure you make the right choice for your needs. In particular, the main technical characteristics of pressure washers are as follows:

• Power supply. Pressure washers can be powered by electricity, either single-phase or three-phase, battery-powered or with a combustion engine. Electric versions are ideal for domestic use or indoors, while combustion engine versions are perfect for outdoor areas where no electricity supply is available.
• Water pressure. Measured in bar, water pressure determines cleaning effectiveness. Domestic pressure washers generally operate between 110 and 160 bar, while professional models can exceed 310 bar for heavy industrial applications.
• Flow rate. Expressed in litres per hour (L/h) or litres per minute (L/min), the flow rate indicates the amount of water that the pressure washer is capable of spraying in a given period of time. The higher the flow rate, the greater the ability to cover large surfaces quickly.
• Hot or cold water. Pressure washers can use cold water or have a system that heats the water, increasing their effectiveness against greasy or encrusted dirt.

These characteristics are fundamental in determining the field of application of a pressure washer. For example, a high-pressure model with flow rate is ideal for cleaning large, very dirty outdoor areas, such as paving, external walls or heavy machinery. On the other hand, a more moderate pressure may be sufficient for domestic cleaning of cars, garden furniture or bicycles.

Modern pressure washers are equipped with various "additional" or special features that improve their functionality, safety and durability. The most relevant ones are usually the following:

1. Engine brand: The choice of engine directly affects the pressure and flow rate of the pressure washer. Engines from reputable brands guarantee superior performance and greater durability.
2. Rotation speed: A lower pump rotation speed reduces wear and tear and increases the longevity of the appliance. Professional pressure washers often operate at 1450 L/min, offering an optimal balance between performance and durability.
3. Pressure regulator: Found mainly on professional models, this allows the output pressure to be adjusted to specific needs, improving the adaptability of the pressure washer to various types of surfaces without risk of damage.
4. Versatility: suitable for any type of dish, from simple hamburgers to more sophisticated recipes.
5. Head material: The head can be made of plastic, aluminium or brass. Brass, being one of the hardest and most resistant metals, is ideal for high-pressure pressure washers, ensuring superior performance and durability.

• Hose reel: makes it easier to handle the high-pressure hose, improving tidiness and safety during use.
• Detergent tank: allows liquid detergents to be applied directly through the jet.
• Spray lance with rotating nozzle : concentrates the water jet in one spot, increasing the cleaning power on particularly stubborn dirt.

Before purchasing a pressure washer, we recommend that you carefully consider how you intend to use it, as there are many differences between domestic and professional models. In particular, the choice of the appropriate model should be based on your specific cleaning needs, which differ in terms of frequency, intensity and type of surface to be treated.

In particular, for professional or industrial pressure washers, we recommend that you consider the following aspects:

• Frequency of use: professional pressure washers are designed for frequent and intensive use, often on a daily basis.
• Intensity: they require high power to tackle stubborn dirt and large surfaces.
• Surface types: suitable for construction sites, industrial facilities, agriculture, and large commercial areas.
• Technical characteristics: usually equipped with more powerful engines, higher pressures, and constructed with resistant materials such as brass to ensure durability and reliability.

If, on the other hand , you need to use semi-professional pressure washers in a domestic or hobby context, we recommend that you consider:

• Frequency of use: generally used for occasional jobs, such as spring cleaning or washing cars and garden furniture.
• Intensity: less powerful than professional models, but perfectly capable of tackling normal household dirt.
• Types of surface: ideal for patios, garages, cars and small gardening jobs.
• Technical features: often lighter and more manoeuvrable, with simplified functions for easy use by non-professionals.

Understanding these aspects is essential for choosing a pressure washer that not only meets your cleaning needs but also offers good value for money. Opting for a model that is too powerful for domestic needs can result in an unnecessary investment, while a model that is too weak may not be effective in a professional setting, resulting in inadequate expenditure and potentially rapid wear and tear on the device.

Here are some crucial tips to help you choose a pressure washer, whether for professional or hobbyist use.

1. Assess the pressure and flow rate. These are the key parameters for determining the effectiveness of a pressure washer. For professional use, it is advisable to opt for models with pressures above 200 bar and high flow rates, while for domestic use, pressures of around 110-160 bar are sufficient.
2. Type of power supply. Consider whether you need an electric, battery-powered or petrol-powered pressure washer. Electric models are suitable for indoor use or near power sources, battery-powered models offer greater mobility, and petrol-powered models are ideal for areas without access to electricity.
3. Hot or cold water. Hot water pressure washers are more effective at removing grease and encrusted dirt, ideal for industrial or agricultural use. Cold water pressure washers are sufficient for most domestic applications.
4. Construction materials. Check the materials used, especially for the pump and head, which affect durability. Pumps with brass heads are more durable and suitable for intensive use.
5. Available accessories. Check the availability of accessories such as different nozzles, detergent tanks, brushes and hose reels, which can extend the versatility of the pressure washer.
6. Maintenance and warranty. Consider ease of maintenance and availability of spare parts. Good after-sales support, such as that provided by AgriEuro, and an extended warranty are indicators of a reliable product.

Choosing a pressure washer from a reliable brand can make all the difference in terms of quality, efficiency and durability. Here is a short list of the most renowned brands in the industry available on AgriEuro:

• Karcher professional pressure washers. Probably the most famous among pressure washer manufacturers, Karcher is synonymous with quality and versatility, with models suitable for both domestic and professional use.
• Comet high-pressure cleaners. Known for the robustness and reliability of its machines, Comet offers pressure washers that stand out for their durability and power.
• Lavor hot and cold water pressure washers. Another leading name in the industry, Lavor manufactures pressure washers that combine technological innovation with ease of use, ideal for both hobbyists and professionals.
• Annovi Reverberi pressure washers. Known for the high quality of its pumps, Annovi Reverberi supplies pressure washers that promise superior performance and long-term reliability.
• DeWalt pressure washers. Known for its robustness, DeWalt offers pressure washers that are particularly popular in industrial and construction settings.
• Michelin cold and hot water pressure washers. Michelin, best known for its pneumatic products, also manufactures high-quality pressure washers that are suitable for a variety of uses.

Here are three good reasons to buy your pressure washer from AgriEuro:

• Fast and free shipping. AgriEuro guarantees fast delivery at no extra cost, optimising time and expenses for every customer.
• Wide availability of spare parts. A wide range of spare parts are always available, ensuring that pressure washers can be kept in good working order for a long time, reducing any downtime.
• Attentive and personalised after-sales service. AgriEuro's customer service is ready to offer support for every need, from pre-purchase advice to after-sales assistance, ensuring a superior shopping experience.

These points underline AgriEuro's commitment to providing not only quality products but also excellent service that accompanies the customer through every stage of the purchasing process and beyond. For those looking for an effective and long-lasting cleaning solution, the pressure washers available on AgriEuro are the ideal choice.

Here are some things you can do with a pressure washer:

• Cleaning outdoor surfaces. Remove dirt accumulated on patios, driveways, and building facades.
• Removing moss and algae. High pressure is effective in removing moss and algae from stone and wood without the use of chemicals.
• Washing vehicles. Use it to clean cars, boats, and bicycles, effectively removing mud and dirt.
• Preparing surfaces for painting. It can be used to prepare exterior surfaces such as fences and walls before painting.
• Cleaning garden furniture and tools. Excellent for renovating outdoor furniture and agricultural or garden equipment.

In addition, with the right accessories, pressure washers can also be used to:

• unblock drains,
• cleaning gutters.

If you need to buy a pressure washer to clean your home, here are some things you should consider:

• Power and pressure. For most domestic applications, a model with a pressure between 100 and 130 bar is sufficient.
• Portability. A wheeled model, i.e. with wheels and a handle, is ideal for easy transport around the house and garden.
• Power source. Electric pressure washers are the most common for domestic use, as they are lighter, quieter and do not emit discharge, unlike petrol models.
• Accessories. Ensure that the pressure washer comes with different nozzles, a high-quality hose and, if possible, accessories for detergents. These components expand the device's range of uses.
• Ease of maintenance. Choose a model that requires little maintenance and is easy to clean and store.

Both types of pressure washers are effective cleaning tools. However, they have significant differences, which we have summarised below.

Hot water pressure washers:

• Superior cleaning performance. Hot water pressure washers are particularly effective at removing stubborn dirt, grease, oils and various types of residue thanks to the combination of hot water and high-pressure, which facilitates the dissolution of residues
• Professional applications. They are often used in industrial and commercial settings for heavy-duty cleaning on very dirty surfaces, such as garages, workshops, or industrial equipment.
• Reduced cleaning time. The use of hot water increases cleaning effectiveness, reducing the time and effort required to complete the job.
• Higher cost. Hot water pressure washers tend to have a higher initial cost than cold water ones, due to the greater technological complexity required to heat the water.

Cold Water Pressure Washers:

• Versatility of use. Cold water pressure washers are suitable for a wide range of applications, from light domestic cleaning to industrial cleaning operations, offering greater flexibility in use.
• Lower cost. They are usually less expensive than hot water pressure washers, making them more affordable for domestic or semi-professional use.
• Lower energy consumption. As they do not require water to be heated, cold water pressure washers consume less energy during operation, helping to reduce long-term operating costs.

Hot water pressure washers are particularly useful in certain situations where cleaning requires the use of hot water to remove stubborn dirt or oils:

• Industrial and commercial cleaning. Hot water pressure washers are ideal for cleaning heavily soiled industrial and commercial surfaces, such as workshop floors, mechanical equipment, or food processing surfaces where grease or oil residues are present.
• Removal of oily residues. Thanks to the water temperature, hot water pressure washers are able to effectively dissolve and remove residues of oils, greases and other oily materials that can be difficult to clean with cold water.
• Cleaning cluttered surfaces. When cleaning very dirty or cluttered surfaces that require thorough and quick cleaning, the use of hot water can speed up the cleaning process and improve its effectiveness.
• Environments where hygiene is required. In environments where thorough sanitisation is necessary, such as commercial kitchens or food industries, the use of hot water in pressure washers can help ensure more hygienic and complete cleaning.
• Cleaning in harsh weather conditions. In cold climates or during winter, using hot water in pressure washers can prevent the water from freezing during outdoor cleaning operations, ensuring optimal operation of the appliance.

Cleaning your terrace with a pressure washer can be a quick and easy task. Just follow these steps:

1. Prepare the terrace. Remove objects and furniture from the terrace to allow free access to the surfaces to be cleaned. Sweep away leaves, debris and surface dirt with a broom or rake.
2. Selecting the jet and pressure. Select a jet suitable for the terrace surfaces and adjust the pressure of the pressure washer according to the type of terrace material to avoid damage.
3. Diluting the detergent. Dilute the detergent specifically designed for pressure washers in water according to the manufacturer's instructions and fill the tank of your pressure washer.
4. Applying the detergent. Spray the detergent evenly onto the terrace using the pressure washer, making sure to cover all the surfaces to be cleaned.
5. Leave the detergent to work. Leave the detergent to work on the surface for a few minutes to dissolve dirt and residues.
6. Cleaning with the pressure washer. Use the pressure washer to rinse away the detergent and dirt from the terrace surface, working in sections and keeping the pressure washer at a safe distance to avoid damage.
7. Cleaning difficult areas. For areas with stubborn dirt or stains, you can focus the jet on those specific areas and use a brush or a lance with a rotating nozzle for more effective cleaning.
8. Final rinse. Once cleaning is complete, rinse the terrace thoroughly with clean water to remove any detergent residue and ensure that the surface is clean and free of residue.
9. Drying. Allow the terrace to dry completely in the open air before replacing furniture and objects.

Here are the steps to follow:

1. Assess the wall surface. Examine the wall for any cracks, crevices or structural damage before starting cleaning. Be sure to repair any damage before proceeding with cleaning.
2. Prepare the surrounding area. Remove any objects or furniture that could hinder the cleaning process and cover any windows, doors or other openings to protect them from water.
3. Selecting the jet and pressure. Select a jet suitable for the type of wall material and adjust the pressure of the pressure washer according to the resistance of the surface to avoid damage.
4. Diluting the detergent (optional). If necessary, dilute a specific detergent for pressure washers in water according to the manufacturer's instructions and fill the tank of your pressure washer.
5. Application of detergent (optional). Spray the detergent evenly onto the wall surface using the pressure washer, making sure to cover all areas to be cleaned.
6. Leave the detergent to work (optional). If you have applied a detergent, leave the product to work on the wall surface for a few minutes to dissolve dirt and residue.
7. Cleaning with the pressure washer. Use the pressure washer to rinse the detergent and dirt off the wall surface, working from top to bottom to avoid streaks and ensuring that you cover all areas evenly.
8. Cleaning difficult areas. For areas with stubborn dirt or stains, you can focus the jet on those specific areas and use a lance with a rotating nozzle for more effective cleaning.
9. Final rinse. Once cleaning is complete, rinse the wall thoroughly with clean water to remove any detergent residue and ensure that the surface is clean and free of residue.
10. Drying. Allow the wall to dry naturally in the open air before removing any protective coverings and replacing objects.

To ensure the proper functioning of a pressure washer and extend its useful life, it is important to follow these regular maintenance practices:

1. Cleaning after each use. After each use, rinse the pressure washer thoroughly with clean water to remove any dirt, detergent or limescale residues that could damage the internal components.
2. Check the filters. Regularly check the water and air filters and clean or replace them as necessary to prevent clogging and ensure optimal air and water flow.
3. Inspecting pipes and fittings. Periodically check the pipes and fittings of the pressure washer for leaks, damage or wear and replace any damaged or worn parts to prevent water leaks or pressure problems.
4. Lubrication of moving parts. Regularly lubricate the moving parts of the pressure washer, such as the gun, lance and joints, with specific lubricants to ensure smooth movement and reduce component wear.
5. Pump inspection. Periodically check the condition of the pressure washer pump and verify that there are no leaks, abnormal noises or pressure losses. If you encounter any problems, contact a qualified technician to repair or replace the pump.
6. Water drainage. After use in freezing conditions or during long periods of inactivity, be sure to completely drain the water from the pressure washer to prevent damage caused by water freezing inside the components.
7. Proper storage. Store the pressure washer in a cool, dry place away from the elements when not in use. Protect it from weather and moisture to prevent damage to components and electronics.

For completely safe use of pressure washers, follow these guidelines:

1. Read the user manual. Before using the pressure washer, carefully read the user manual and follow all the instructions provided by the manufacturer for correct and safe use of the appliance
2. Wear protective clothing. Always wear protective eyewear and gloves when using the pressure washer to protect yourself
3. Maintain a safe distance. Maintain a safe distance from the work area and surrounding people when using the pressure washer to avoid injury from the high-pressure water jet.
4. Avoid pointing the jet at people or animals. Never point the jet of the pressure washer at people, animals or fragile objects to avoid injury or damage.
5. Switch off the pressure washer before performing maintenance. Before performing any maintenance or cleaning on the pressure washer, be sure to switch off the appliance, disconnect it from the mains and release the water pressure.
6. Avoid using extension cords. Whenever possible, avoid using extension cords with the pressure washer to reduce the risk of damage caused by poor electrical insulation or overloading the electrical network.
7. Do not use flammable solvents. Avoid using flammable solvents or hazardous chemicals with the pressure washer, as they may cause fires or damage to the appliance.
8. Switch off the pressure washer if you encounter any problems. If you notice any malfunctions or abnormalities while using the pressure washer, switch it off immediately, unplug it from the mains and contact a qualified technician for repair
9. Store the pressure washer safely. After use, store the pressure washer in a safe place, protected from the weather and out of the reach of children.

When choosing a detergent to use with a pressure washer, be sure to read the manufacturer's instructions carefully to ensure compatibility with your appliance and to achieve the best cleaning results.

Some types of detergents commonly used for cleaning with pressure washers are as follows:

1. Some types of detergents commonly used for cleaning with pressure washers are as follows:.
2. Multi-purpose detergents. These are versatile detergents suitable for cleaning a wide range of surfaces, such as floors, walls, vehicles and garden equipment.
3. Specific detergents. There are specific detergents for different types of surfaces, such as wood, tiles, concrete, plastic, aluminium, etc. Be sure to choose a detergent that is suitable for the material you are cleaning.
4. Degreasing detergents. These are particularly effective for removing grease, oil and food residues from surfaces such as barbecues, engines, kitchen equipment, etc.
5. Detergents for sensitive surfaces. For delicate or sensitive surfaces, such as glass, paint or delicate materials, it is advisable to use detergents specially formulated so as not to damage the surface.
6. Anti-foaming detergents. To prevent excessive foaming when using a pressure washer, you can use anti-foaming detergents that help keep the foam under control.
7. Mould and algae removal detergents. For outdoor surfaces such as walls, floors or fences that are prone to mould or algae growth, you can use specific detergents to remove them.

Water pressure is one of the key factors affecting the effectiveness of cleaning with a pressure washer. Here's how it affects the cleaning process:

1. Dirt removal force. The higher the water pressure, the greater the force with which the water jet hits the surface to be cleaned, allowing dirt to be removed more easily and effectively.
2. Depth of cleaning. Higher water pressure allows you to penetrate deeper into the pores and crevices of surfaces, ensuring a more thorough and deeper clean.
3. Cleaning speed. Higher water pressure allows surfaces to be cleaned more quickly, reducing the overall time needed to complete the job.
4. Efficiency on different types of dirt. Water pressure can be adjusted according to the type of dirt to be removed and the sensitivity of the surface. For example, high-pressure is effective for removing stubborn dirt or encrustations, while lower pressure is suitable for delicate surfaces.
5. Prevention of mould and algae growth. Constant and sufficiently high water pressure can help prevent the formation of mould, algae and other atmospheric agents on external surfaces.
6. Water savings. Despite the higher pressure, modern pressure washers are designed to consume less water than traditional cleaning methods, resulting in significant water savings.

The water consumption of a pressure washer depends on its water flow rate, expressed in litres per minute (L/min), and the time of use.

You can calculate the water consumption of a pressure washer using this simple formula:

Water consumption = Water flow rate (L/min) x Time of use (min)

For example, if the water flow rate of your pressure washer is 10 litres per minute and you use it for 30 minutes, the total water consumption will be:

Water consumption = 10 L/min x 30 min = 300 litres

So, in this case, your pressure washer would consume 300 litres of water during 30 minutes of use.

it is important to consider the water consumption of your pressure washer when planning cleaning operations, especially if you are using drinking water or operating in areas with water resource limitations.

The power consumption of a pressure washer depends mainly on the motor power of the electric motor and the water pressure. Power is usually expressed in watts (W) or kilowatts (kW). You can calculate the power consumption using this formula:

Power consumption (A) = Power (W or kW) / Voltage (V)

For example, if you have a pressure washer with a power of 1500 watts and it operates at a voltage of 220 volts, the power consumption will be:

Current consumption = 1500 W / 220 V = approximately 6.82 A

So, in this case, the pressure washer would consume approximately 6.82 amps of current when in operation.

it is important to check the power rating of the pressure washer and its compatibility with your domestic electrical system before use to avoid overloading or damaging your equipment.

The power of a pressure washer is mainly determined by the water pressure measured in bar (or in psi, pounds per square inch). Here are some points to consider when assessing whether a pressure washer has good power:

• Water pressure. A pressure washer with higher water pressure generally has greater cleaning power. For domestic or semi-professional use, a pressure between 100 and 150 bar is considered adequate for most applications. It is therefore suitable for domestic or semi-professional use.
• Water flow rate. In addition to pressure, it is also important to consider the water flow rate, expressed in litres per minute (L/min). A higher water flow rate can improve cleaning efficiency, especially on large surfaces.

A specific oil is used in pressure washers to lubricate the high-pressure pump. This oil is designed to withstand the high pressures and temperatures generated during operation of the pressure washer and to protect the internal components of the pump from wear.

We recommend using an oil recommended by the manufacturer, as the wrong oil could compromise the operation and life of the pump.

Generally, pressure washers use high-quality synthetic or mineral oils designed specifically for high-pressure pumps. These oils are available in various degrees of viscosity and must be replaced regularly according to the manufacturer's recommendations, usually after a certain number of hours of operation.

Before changing the oil, be sure to consult the pressure washer manual for specific manufacturer instructions and carefully follow the recommended procedures to ensure proper operation of the equipment.

Here are some solutions to common problems that can occur with pressure washers:

1. Loss of pressure. Check for leaks in the pipes, fittings or seals and replace any damaged parts. Ensure that the water filter is not clogged and clean it if necessary.
2. Lack of pressure. Check the nozzle for blockages or damage and replace it if necessary. Ensure that the water filter is clean and that the pump is working. Check for leaks in the water suction and fix the problem.
3. Noisy or vibrating pump. Check for debris or foreign objects trapped in the pump and remove them. Ensure that the pump is properly lubricated with the oil recommended by the manufacturer.
4. Lack of power. Check if the power cable is damaged or if the power socket is working. Ensure that the switch is turned on and that there are no interruptions in the power supply.
5. Pump overheating. Check if the seals are damaged or worn and replace them if necessary. Ensure that all connections are tight and that there are no leaks.
6. Motor malfunction. Check for damage or faults in the electric motor and contact a qualified technician for repair or replacement.

If the pressure washer loses pressure, you can follow these steps to solve the problem:

1. Check the nozzle. Check whether the nozzle is blocked or damaged. Clean or replace it if necessary.
2. Inspect the pipes and fittings. Check for leaks or damage in the pipes and fittings. Tighten or replace them if necessary.
3. Check the water filter. Ensure that the water filter is not clogged. Clean or replace it if necessary.
4. Check the pump. Check that the pump is working properly and that there are no leaks or damage. Ensure that there are no obstructions in the water suction system.
5. Examine the nozzle seal. Check that the nozzle seal is intact and properly positioned. Replace it if damaged.
6. Ensure that the pressure is correctly adjusted. Check that the pressure washer is set to the correct intensity for the job you are doing.

To protect a pressure washer from freezing during the coldest months of the year, you can take the following precautions:

1. Empty the pressure washer completely. Before the cold weather arrives, make sure you empty the pressure washer completely of water to prevent it from freezing inside the components.
2. Drain the pipes and pump. Use the pressure washer's drainage function or manually remove the water from the pipes and pump to prevent damage caused by freezing.
3. Store the pressure washer in a sheltered place. During periods of winter inactivity, store the pressure washer in a sheltered place, such as a garage or shed, to protect it from the elements and frost.
4. Use antifreeze. If you live in a particularly cold area, consider using a specific antifreeze for pressure washers, which can be added to the water to prevent the components from freezing.
5. Cover the pressure washer. Cover the pressure washer with a tarpaulin or a specially designed pressure washer cover to protect it from moisture and frost during periods of inactivity.

Professional pressure washers require regular maintenance to ensure optimal performance and long life. In particular, they require:

1. Regular cleaning. After each use, thoroughly clean the pressure washer to remove dirt, debris and detergent residue from external surfaces and internal components.
2. Filter checks. Regularly check and clean the water and air filters to ensure optimal water and air flow and prevent clogging.
3. Lubrication. Regularly lubricate the moving parts of the pressure washer, such as the gun, lance and joints, with specific lubricants to ensure smooth operation and reduce component wear.
4. Inspecting pipes and fittings. Periodically check the pipes and fittings of the pressure washer for leaks, damage or wear and replace any damaged or worn parts to prevent water leaks or pressure problems.
5. Pump maintenance. Regularly check the condition of the pump and check for leaks, abnormal noises, or pressure loss. Be sure to follow the manufacturer's instructions for lubrication and maintenance of the pump.
6. Replacement of worn components. Regularly replace worn or damaged components, such as seals, valves or pistons, to ensure optimal operation of the pressure washer.
7. Preventive maintenance. Perform periodic checks and preventive maintenance on the pressure washer to identify and resolve any issues before breakdowns or malfunctions occur.