LUTIAN High Pressure Car Washer User Manual

1. Safety Information

Please read this manual carefully before using the machine to understand its operating methods and specifications. Failure to follow instructions may result in serious injury or property damage.

1.1 Symbols for Labeling

• Danger: Follow safety instructions to prevent serious personal injury or property damage.
• Attention: Be aware of the risk of damaging the machine or its individual parts.
• Note: Provides prompts and instructions to simplify operations and ensure safe operation.

1.2 Personal Protective Equipment (PPE)

Always protect yourself when operating the machine. During operation, wear:

• Protective goggles
• Ear protectors
• Protective clothing
• Anti-slip shoes
• Breathing mask (if applicable)
• Protective gloves

1.3 General Safety Guidelines

• The high water pressure and power connection of the machine are particularly dangerous.
• Do not operate the machine if you have not received training or read this manual.
• Minors are not allowed to use the machine.
• Before starting, carefully inspect for any potential faults. The cable insulation should be intact and free from damage.
• Operators and all personnel near the cleaning station should take protective measures to avoid being hit by splashes.
• Always unplug the power cord when cleaning, repairing, or replacing parts.
• This machine should only be operated by persons in good physical and mental condition.
• Do not use this cleaning machine in places with explosion risk.
• Do not use high-pressure mode to clean surfaces containing asbestos.
• Do not inhale liquids containing solvents (e.g., petrol, fuel oil, paint thinner or acetone).
• Do not point the nozzle at yourself, others, pets, or other animals, or even clean clothes or shoes, where there is a risk of injury.
• Do not point the nozzle at live equipment or machinery that may cause short circuit.
• Hold the gun assembly firmly with both hands. During operation, the gun assembly experiences a certain amount of recoil force.
• It is strictly prohibited to use this high-pressure washer at temperatures below 0°C. Do not start a frozen machine. Freeze damage is not covered by the warranty.
• Make sure the foundation is solid and safe. The machine should be operated upright.
• Do not cover the machine or use it in a poorly ventilated room.

2. Product Overview and Components

The LUTIAN DOMO-D4 High Pressure Car Washer is designed for efficient household cleaning tasks such as washing cars, motorcycles, boats, terraces, driveways, and garden furniture.

2.1 Main Components

1. Short gun barrel
2. Foam pots
3. Inlet
4. Inlet Filter
5. Quick Coupling
6. Inlet Pipe
7. Self-priming Filter
8. Delivery port
9. Switch (ON/OFF)
10. Water Outlet
11. Gun Handle

3. Setup and Assembly

Follow these steps to assemble your pressure washer before first use.

3.1 Water Inlet Filter Installation

The inlet filter screen must always be installed to remove sand, lime, and other impurities, as these substances can damage the pump valves. When installing the inlet nut for the first time, verify that the factory-installed inlet filter screen is properly seated within the machine's inlet nut. Tighten the inlet nut clockwise to the inlet port.

3.2 High-Pressure Hose Connection

1. Align the high-pressure water pipe with the gun handle valve sleeve, then press it inward firmly to complete the connection.
2. Align the high-pressure hose with the machine's water outlet and insert it into the inlet. A clicking sound indicates the hose is securely locked.

3.3 Gun Assembly Installation

1. Insert the nozzle (or cleaning pot) into the gun barrel. First, press the insert firmly down to the base, then rotate it 90 degrees to the left until the components are fully engaged and secure.
2. When using the cleaning bottle, insert the bottle assembly into the gun handle, fill it with cleaning solution, and use the solution to rinse away contaminants.

3.4 Water Connection

The machine supports two water inlet methods: self-priming and direct connection to a pressurized water source.

3.4.1 Connecting to a Water Source with Lower Pressure (Self-Priming)

• The machine can operate in self-priming mode, allowing it to be connected to water containers, rivers, lakes, and pools. When drawing water from non-potable main pipelines, no backflow prevention device is required.
• When operating the machine with a low-pressure water source, it is essential to use an external filter to ensure that impurities are not drawn in.
• To meet these requirements, LUTIAN recommends using the original LUTIAN water inlet pipe kit.
• Use the new hose assembly provided with the device; the old hose assembly cannot be reused.
• The machine is designed to suck up to 50cm above the water level.
• Place the machine at a maximum height of 0.5 meters above the horizontal plane.
• Ensure the inlet filter is properly positioned and securely connected to the inlet pipe.

3.4.2 Connecting to a Pressurized Water Source

• The maximum inlet pressure is 0.7MPa/7bar and the maximum temperature is 40°C.
• Check that the filter is installed in the inlet pipe and is not blocked.
• Using a quick connector, connect the water pipe to the faucet and turn on the water source.
• Before connecting the hose to the machine, let the water flow through the hose to prevent sand and dirt from entering the machine.
• Turn off the water supply and connect the pipe to the inlet using a quick connector.

3.5 Electrical Connection

• The voltage and frequency of the machine (as indicated on the nameplate) must match those of the power supply.
• Only certified electricians may connect the machine to electrical installations.
• It is recommended to install a residual current device (RCD) on the machine's power supply. If the leakage current exceeds 30mA or 30ms, the device will cut off the power.
• When using extension cords, ensure they are waterproof and leak-proof to prevent safety hazards. The cord's specifications must match the product's power requirements.

4. Operating Instructions

4.1 Starting the High-Pressure Washer

• Before starting cleaning, ensure the machine is upright and on a flat surface. Do not place the machine in tall grass!
• Connect to the power supply.
• Access water sources.
• Release the trigger lock. When the high-pressure washer is unattended, remember to unplug the power cord, turn off the machine, and lock the trigger.
• Press the trigger on the injector handle to release water until the pipe is completely dry.
• Turn the rotary switch to ON/I when the machine is turned on.
• A trigger that activates the gun's grip. When the trigger is released, the machine automatically stops. Re-activating the trigger restarts the machine. Do not switch the gun quickly. After disarming, pause for a few seconds before using the gun.
• Do not cover the machine's ventilation holes during use. Do not operate the machine without a water source, as this may cause damage.

4.2 Car Washing Steps

Achieve a clean car in just 10 minutes a day!

1. Step 1: Wet the car body (2-3 minutes)
   Turn on the washer and spray the car body with water to prepare for the next step of foam spraying.
2. Step 2: Spray Foam (3-5 minutes)
   Switch to the pre-modulated foam spray and apply to the vehicle body until large dirt particles detach and dissolve.
3. Step 3: Brushing the vehicle body (3-5 minutes)
   Use a brush to clean the vehicle body, removing stubborn stains and residues.
4. Step 4: Clean Your Car (1-2 minutes)
   Wash thoroughly with clean water and dry with a towel to keep your car looking like new.

5. Maintenance and Storage

To ensure a long service life and trouble-free operation of your high-pressure washer, follow these recommendations:

5.1 Stopping the High-Pressure Washer

1. Cut off the water supply, trigger the gun, and run the machine until the water stops flowing from the nozzle.
2. Shut down the machine and switch the rotary switch to OFF/O.
3. Unplug the device from the power outlet and retract the power cord.
4. Remove the quick coupling at the inlet nut to detach the inlet pipe. Press the gun valve sleeve button to remove the high-pressure pipe.
5. Rotate the high-pressure pipe at the outlet counter-clockwise to remove it.
6. Place the gun assembly, cleaning pot assembly, and other accessories into the high-pressure washer bracket.

5.2 Cleaning

• Water Inlet Filter: Clean the inlet filter at least once a month or more frequently as needed. Use a screwdriver or pliers to carefully loosen and clean the filter.
• Nozzle: The nozzle blockage will cause the pump pressure to be too high. Use the nozzle cleaning tool (needle) only when the nozzle is detached and the machine is stopped. Unplug the gun barrel and flush the nozzle with water in reverse flow.
• Machine Ventilation: The machine should be kept clean to allow free passage of cold air through the machine vents.

5.3 Lubrication

To ensure easy connection and prevent the O-ring from drying out, all types of joints should be lubricated regularly.

5.4 Storage

High-pressure washers should be stored in a frost-free indoor environment. After use and before storage, make sure to drain the remaining water from the pump, intake pipe, and accessories. If the machine becomes frozen due to negligence, it is necessary to inspect for potential damage.

6. Troubleshooting

If the machine exhibits issues such as failure to start or stop, vibration, pressure fluctuations, motor noise, or water non-discharge, immediately shut down the machine and disconnect the power supply.

• Check all connections for proper assembly and tightness.
• Ensure the water supply is adequate and the filter is clean and unobstructed.
• Verify that the power cord and electrical connections are secure and undamaged.

If the problem persists, please contact your local dealer or an authorized service center for assistance. Do not attempt to repair the machine yourself if you are not trained to do so.

7. Specifications

The following table outlines the technical specifications for the LUTIAN DOMO-D4 High Pressure Car Washer:

7.1 Product Dimensions

7.2 Package Dimensions

8. Warranty and Support

8.1 Warranty Conditions

LUTIAN guarantees a 1-year warranty for its household high-pressure washers under the following conditions:

• Malfunctions caused by material defects, process flaws, or design flaws (wear and improper use are not covered by repairs).
• The product must be used according to the instructions in this manual.
• Repairs must be performed by LUTIAN-trained personnel or authorized service centers using original accessories.
• The product must be free from abuse such as hammering, collision, freezing, or commercial use.
• Only water free of any impurities was used.

The warranty covers replacement of defective parts, excluding packaging and postage/shipping costs. The machine must be returned to LUTIAN or an authorized LUTIAN service center with a fault report and product specifications.

8.2 Additional Resources

For detailed guides and documents, please refer to the official User Manual (PDF) available at: LUTIAN DOMO-D4 User Manual (PDF).

9. Hazardous Substances in the Product

This table is prepared in accordance with the provisions of SJ/T 11364, detailing the names and concentrations of hazardous substances in the product components.

Note: 'O' indicates that the content of the hazardous substance in all homogeneous materials of the component is below the limit requirements specified in GB/T 26572. 'X' indicates that the content of the harmful substance in at least one homogeneous material of the component exceeds the limit specified in GB/T 26572.

This product may not include all components listed in the table above. Please refer to the actual product you purchase. The eco-friendly usage period is indicated on the product. After exceeding this period, the product should be processed through the classified recycling system. The eco-friendly usage period is not the same as the product's usage period or warranty period.