STIER SDR-300 Pressure Washer Instruction Manual

1. Safety Information

Please read and understand all safety warnings and instructions before operating the STIER SDR-300 Pressure Washer. Failure to follow these instructions may result in electric shock, fire, and/or serious injury.

• Electrical Safety: Always connect the pressure washer to a properly grounded outlet. Do not use extension cords unless they are rated for outdoor use and heavy-duty appliances. Keep all electrical connections dry and off the ground.
• High Pressure Hazard: The high-pressure jet can be dangerous if misused. Never direct the water jet at people, pets, or electrical equipment. Always wear appropriate personal protective equipment, including safety glasses, gloves, and hearing protection.
• Water Supply: Ensure the water supply is clean and free of debris. Do not use the pressure washer with hot water or corrosive liquids.
• Stability: Operate the pressure washer on a stable, level surface to prevent tipping.
• Children and Bystanders: Keep children and bystanders away from the operating area.
• Maintenance: Disconnect the power supply before performing any maintenance or cleaning.

2. Product Overview

The STIER SDR-300 is a powerful and versatile pressure washer designed for various cleaning tasks around your home and garden. Its robust construction and mobile design ensure efficient and flexible operation.

Key Features:

• Powerful 3200 W motor for effective cleaning.
• Operating pressure of 150 bar and a maximum flow rate of 540 l/h.
• Compact and mobile design with all-terrain chassis for easy transport.
• Integrated accessory storage.
• Color-coded quick nozzles for various applications.
• Detergent application system with adjustable flow.

Included Components:

The package includes the following items:

• 1 x STIER SDR-300 Pressure Washer
• 1 x Stainless Steel Spray Gun
• 1 x 5m High-Pressure Hose
• 1 x 5m Steel-Reinforced Hose
• 1 x 5m Connection Cable
• 1 x Soap Bottle
• 1 x Cleaning Stick
• 1 x Inlet Filter
• 4 x Quick Nozzles (color-coded)
• 1 x Turbo Nozzle
• 1 x Patio Cleaner Attachment
• 1 x Instruction Manual

Figure 2.1: STIER SDR-300 Pressure Washer with included accessories.

3. Setup

3.1 Assembly

1. Attach the wheels to the base of the unit if not already assembled.
2. Secure the handle to the main body of the pressure washer.
3. Connect the high-pressure hose to the outlet on the pressure washer and to the spray gun. Ensure connections are tight.
4. Insert the desired nozzle into the spray gun.

3.2 Water Supply Connection

1. Connect a garden hose (not included) to the water inlet on the pressure washer. Ensure the inlet filter is in place.
2. Connect the other end of the garden hose to a water tap.
3. Turn on the water tap completely to ensure a steady water flow to the pressure washer.

Figure 3.1: Rear view of the pressure washer with water inlet and high-pressure outlet.

3.3 Power Connection

1. Uncoil the power cable completely.
2. Plug the power cable into a suitable, grounded electrical outlet.

4. Operating Instructions

4.1 Starting the Unit

1. Ensure all connections (water, high-pressure hose, power) are secure.
2. Turn on the water supply completely.
3. Press the ON/I switch on the pressure washer to start the motor.
4. Squeeze the trigger on the spray gun to release air from the system and allow water to flow. Hold the trigger until a steady stream of water emerges.

Figure 4.1: Power switch (ON/I) and pressure control on the unit.

4.2 Using Different Nozzles

The STIER SDR-300 comes with color-coded quick nozzles for various cleaning tasks:

• Red (0° Nozzle): Extra strong, pinpoint pressure water jet for stubborn dirt. Use with caution.
• Yellow (15° Nozzle - implied by 25° and 40°): For intensive cleaning.
• Green (25° Nozzle): For intensive cleaning.
• White (40° Nozzle): Medium pressure for larger surfaces.
• Black (Chemical Nozzle): Lower pressure for sensitive surfaces and detergent application.

Figure 4.2: Color-coded quick nozzles for various applications.

4.3 Detergent Application

1. Fill the soap bottle with appropriate pressure washer detergent.
2. Attach the soap bottle to the designated inlet on the pressure washer.
3. Use the black chemical nozzle for detergent application.
4. Adjust the detergent flow directly on the pressure washer if available.

Figure 4.3: Side view showing the detergent tank connection.

4.4 Shutting Down

1. Turn off the pressure washer by pressing the OFF/0 switch.
2. Turn off the water supply at the tap.
3. Squeeze the spray gun trigger to release any remaining pressure in the system.
4. Disconnect the power cable from the outlet.
5. Disconnect the garden hose and high-pressure hose.

5. Maintenance

Regular maintenance ensures the longevity and optimal performance of your pressure washer.

5.1 Cleaning the Inlet Filter

Periodically check and clean the inlet filter to prevent debris from entering the pump. Remove the filter, rinse it under running water, and reinsert it.

5.2 Draining and Storage

Before storing the pressure washer, especially in freezing temperatures, ensure all water is drained from the pump and hoses to prevent damage.

• Disconnect all hoses.
• Run the motor for a few seconds with no water supply to expel any remaining water.
• Store the unit in a dry, frost-free location.

5.3 Hose and Accessory Care

Inspect hoses and nozzles regularly for wear or damage. Replace any damaged parts immediately. Clean nozzles with the provided cleaning stick if they become clogged.

6. Troubleshooting

If you encounter issues with your STIER SDR-300 Pressure Washer, refer to the following common problems and solutions:

7. Specifications

Technical specifications for the STIER SDR-300 Pressure Washer:

8. Warranty and Support

For detailed warranty information, please refer to the warranty card included with your product or visit the official STIER website. If you require technical support or have questions not covered in this manual, please contact your retailer or the STIER customer service department.