1. Introduction
This manual provides essential information for the safe and efficient operation, assembly, maintenance, and troubleshooting of your Koma Tools 1500W 120 Bar Pressure Washer. Please read this manual thoroughly before using the appliance and keep it for future reference. Proper use and adherence to safety guidelines will ensure optimal performance and extend the life of your pressure washer.
2. Product Overview
The Koma Tools 1500W Pressure Washer is designed for effective cleaning tasks around your home and garden. It features a powerful 1500W motor delivering up to 120 bar of pressure, making it suitable for various cleaning applications.

Figure 1: Koma Tools 1500W 120 Bar Pressure Washer. This image shows the main unit with its wheels, handle, and the connected high-pressure hose and spray gun.
2.1 Components Included
- Pressure Washer Unit (with wheels and transport handle)
- High-Pressure Water Gun
- High-Pressure Hose (5 meters)
- Interchangeable Nozzles
- Power Cable (5 meters, with European plug)
3. Safety Instructions
WARNING: Read all safety warnings and instructions. Failure to follow the warnings and instructions may result in electric shock, fire, and/or serious injury. This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.
3.1 Electrical Safety
- Ensure the power supply voltage matches the rating plate on the pressure washer (220-240V).
- Always connect the pressure washer to a properly grounded outlet.
- Do not use the appliance if the power cord or plug is damaged.
- Never operate the pressure washer in the rain or wet conditions.
- Keep all connections dry and off the ground.
3.2 Operation Safety
- Wear appropriate personal protective equipment (PPE) such as safety glasses, gloves, and hearing protection.
- Never direct the water jet at people, animals, electrical equipment, or the appliance itself.
- Maintain a firm grip on the spray gun, as it can recoil when activated.
- Do not allow children or untrained persons to operate the pressure washer.
- Ensure the work area is clear of obstacles and trip hazards.
- Always turn off the pressure washer and release residual pressure before disconnecting hoses or performing maintenance.
4. Assembly and Setup
Follow these steps to assemble and prepare your pressure washer for use.
4.1 Unpacking
- Carefully remove all components from the packaging.
- Check for any damage during transit. Do not operate if damaged.
- Ensure all listed components are present.
4.2 Connecting the High-Pressure Hose and Water Gun
- Connect one end of the high-pressure hose to the outlet on the pressure washer unit. Tighten securely.
- Connect the other end of the high-pressure hose to the inlet of the water gun. Tighten securely.
- Attach the desired nozzle to the end of the water gun. Ensure it clicks into place or is firmly screwed on.
4.3 Connecting to Water Supply
- Connect a standard garden hose (not included) to the water inlet on the pressure washer.
- Connect the other end of the garden hose to a water tap.
- Ensure the water supply is clean and free of debris. A filter may be required for dirty water sources.
- Turn on the water tap fully to ensure a steady water flow to the pressure washer.
4.4 Connecting to Power Supply
- Uncoil the power cable completely.
- Plug the European plug into a suitable, grounded 220-240V electrical outlet.
- Ensure your hands are dry when handling the plug and socket.
5. Operation
Once assembled and connected, follow these steps to operate your pressure washer.
5.1 Starting the Pressure Washer
- Ensure the water supply is fully open.
- Squeeze the trigger on the water gun to purge air from the system until a steady stream of water emerges. This prevents air pockets from damaging the pump.
- Turn the pressure washer's ON/OFF switch to the "ON" position. The motor will start.
- Release the trigger to allow the motor to build pressure.
5.2 Using Nozzles
Your pressure washer comes with interchangeable nozzles designed for different tasks:
- Narrow Spray Nozzle: For stubborn dirt and concentrated cleaning. Use with caution on delicate surfaces.
- Wide Spray Nozzle: For general cleaning and larger areas.
- Detergent Nozzle (if included): For applying cleaning solutions.
Always test the spray pattern and pressure on an inconspicuous area before cleaning the main surface.
5.3 Shutting Down
- Turn the pressure washer's ON/OFF switch to the "OFF" position.
- Turn off the water supply at the tap.
- Squeeze the trigger on the water gun to release any residual pressure in the system.
- Disconnect the power plug from the outlet.
- Disconnect the garden hose and high-pressure hose.
6. Maintenance
Regular maintenance ensures the longevity and efficient operation of your pressure washer.
6.1 Cleaning the Unit
- Wipe down the exterior of the pressure washer with a damp cloth.
- Clean any debris from the air vents to prevent overheating.
- Inspect the nozzles for blockages and clean them if necessary using a small pin or the provided nozzle cleaning tool.
6.2 Storage
- Before storing, ensure all water is drained from the pump, hoses, and spray gun to prevent freezing damage. Run the unit for a few seconds with the water supply off and the trigger squeezed until no more water comes out.
- Store the pressure washer in a dry, frost-free location.
- Coil the high-pressure hose and power cable neatly.
7. Troubleshooting
Refer to this section for common issues and their solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit does not start | No power supply; ON/OFF switch is off; Thermal overload activated. | Check power connection; Turn switch to ON; Allow unit to cool down. |
| Low pressure | Insufficient water supply; Clogged nozzle; Air in pump. | Ensure water tap is fully open; Clean nozzle; Purge air from system (see 5.1). |
| Water leaks | Loose connections; Damaged O-rings. | Tighten all hose connections; Inspect and replace O-rings if damaged. |
8. Specifications
| Model Number | S7922514 |
| Brand | EDM |
| Manufacturer | Koma Tools |
| Power | 1500 W |
| Voltage | 220-240 V |
| Max. Pressure | 120 bar |
| Hose Length | 5 meters |
| Cable Length | 5 meters |
| Dimensions (L x W x H) | 25 x 29 x 69 cm |
| Weight | 6.5 kg |
| Material | Aluminum (pump components) |
9. Warranty and Support
This Koma Tools pressure washer is covered by a manufacturer's warranty against defects in materials and workmanship. Please refer to the warranty card included with your purchase for specific terms and conditions, including the warranty period and claim procedures.
For technical support, spare parts, or warranty claims, please contact your retailer or visit the official EDM/Koma Tools website for customer service information. Keep your proof of purchase for warranty validation.





