1. Important Safety Information
Read all instructions carefully before using the pressure washer. Failure to follow these instructions may result in serious injury or property damage. Keep this manual for future reference.
General Safety Precautions:
- Always wear appropriate personal protective equipment (PPE), including safety glasses, hearing protection, and protective footwear.
- Never point the spray gun at people, pets, or electrical equipment. The high-pressure spray can cause severe injuries.
- Ensure all connections are secure before starting the unit. Leaks can reduce pressure and cause hazards.
- Do not operate the pressure washer in an explosive atmosphere or near flammable liquids or gases.
- Keep children and bystanders away from the operating area.
- Always disconnect the power supply before performing any maintenance or cleaning tasks.
- Use only original replacement parts and accessories.
2. Setup and Assembly
Follow these steps to correctly assemble and prepare your LEHMANN Missouri Pressure Washer for first use.
2.1 Unpacking and Initial Assembly
Carefully remove all components from the packaging. Ensure all parts are present and undamaged. Attach the handle and wheels as per the diagrams provided in the packaging.
Figure 2.1: Assembled LEHMANN Missouri Pressure Washer with hose reel and accessories.
2.2 Connecting the Water Supply
Connect a standard garden hose to the water inlet on the pressure washer. Ensure the connection is tight to prevent leaks. The unit features a self-priming pump, allowing it to draw water from external reservoirs like buckets or barrels, in addition to direct tap connection.
Figure 2.2: Pressure washer utilizing its self-priming pump to draw water from a bucket.
2.3 Connecting the High-Pressure Hose and Spray Gun
- Unroll the 10-meter high-pressure hose from the integrated reel.
- Connect one end of the high-pressure hose to the outlet on the pressure washer.
- Connect the other end of the high-pressure hose to the spray gun.
- Attach the desired nozzle (e.g., adjustable or turbo nozzle) to the spray gun.
2.4 Initial Startup
- Turn on the water supply completely.
- Squeeze the trigger on the spray gun to purge air from the system until a steady stream of water emerges.
- Plug the power cord into a grounded electrical outlet.
- Turn the pressure washer's power switch to the 'ON' position.
Video 2.1: Demonstration of pressure washer setup, connections, and initial operation for car cleaning.
3. Operation
This section details how to operate your pressure washer effectively for various cleaning tasks.
3.1 General Operation
Once the unit is powered on and water is flowing, squeeze the trigger on the spray gun to begin spraying. Release the trigger to stop the flow. The automatic stop system will engage when the trigger is released, prolonging motor life.
3.2 Using Different Nozzles
The LEHMANN Missouri Pressure Washer comes with various nozzles to suit different cleaning needs. Always ensure the pressure washer is off and the trigger is released before changing nozzles.
- Adjustable Nozzle: Allows you to change the spray pattern from a concentrated jet to a wide fan spray by twisting the nozzle. Ideal for general cleaning and rinsing.
- Turbo Nozzle: Provides a powerful, oscillating jet for stubborn dirt and grime on hard surfaces like concrete and brick. Use with caution on delicate surfaces.
Figure 3.1: A range of accessories, including different nozzles and the detergent tank.
3.3 Using the Detergent Tank (Foam Lance)
For enhanced cleaning, especially on vehicles or heavily soiled surfaces, use the included detergent tank (foam lance).
- Fill the detergent tank with an appropriate pressure washer-safe cleaning solution. The tank has a scale for precise chemical dosage.
- Attach the detergent tank to the spray gun.
- Adjust the detergent flow knob on the foam lance to control the amount of soap mixed with the water.
- Apply the detergent to the surface, allowing it to soak for the recommended time before rinsing.
3.4 Cleaning Techniques
The pressure washer is suitable for various domestic cleaning tasks:
- Car Cleaning: Use a wide fan spray or the foam lance for applying detergent, then rinse thoroughly. Maintain a safe distance to avoid damaging paintwork.
- Patio and Deck Cleaning: Use the turbo nozzle for tough stains on concrete or brick. For wooden decks, use a wider fan spray and work with the grain to prevent damage.
- Facade Cleaning: Start with a low-pressure setting or a wide fan spray and gradually increase pressure as needed. Test on an inconspicuous area first.
- Garden Furniture: Use a low-pressure setting and a wide fan spray to clean delicate furniture.
Figure 3.2: Examples of the pressure washer in use for various cleaning applications.
4. Maintenance
Regular maintenance ensures the longevity and optimal performance of your pressure washer.
4.1 After Each Use
- Rinse System: Run clean water through the system for a few minutes to flush out any remaining detergent or debris.
- Disconnect: Turn off the power, unplug the unit, and turn off the water supply. Squeeze the trigger to release any residual pressure.
- Clean Nozzles: Remove and clean any clogged nozzles using the provided nozzle cleaning tool or a thin wire.
- Drain Water: For storage, especially in freezing temperatures, ensure all water is drained from the pump, hoses, and spray gun to prevent damage.
4.2 Storage
Store the pressure washer in a dry, frost-free environment. Coil the high-pressure hose neatly on the integrated reel and secure the power cord. Store the spray gun and accessories in their designated holders on the unit.
5. Troubleshooting
If you encounter issues with your pressure washer, refer to the table below for common problems and their solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Motor does not start | No power supply; tripped circuit breaker; faulty switch | Check power connection; reset circuit breaker; contact support |
| Low or no pressure | Insufficient water supply; clogged nozzle; air in pump; kinked hose | Ensure full water supply; clean nozzle; purge air from system; straighten hose |
| Water leaks | Loose connections; damaged O-rings/seals | Tighten connections; replace damaged O-rings/seals |
| Pulsating pressure | Air in pump; restricted water flow; worn valves | Purge air from system; check water supply/filter; contact support |
6. Technical Specifications
Below are the key technical specifications for the LEHMANN Missouri Pressure Washer, Model LGAPW-2216BPA.
Figure 6.1: Product dimensions of the pressure washer.
- Brand: LEHMANN
- Model Number: LGAPW-2216BPA
- Product Type Name: Pressure Washer
- Power Source: Corded Electric
- Max Pressure: 240 Bars
- Max Flow Rate: 480 Liters per hour
- Power: 2200 W (inferred from product title)
- Pump Type: Aluminum Pump
- Hose Length: 10 Meters
- Item Weight: 10 Kilograms
- Product Dimensions (L x W x H): 37.2 x 37.5 x 91.6 cm
- Tank Volume: 4 Liters (for detergent)
- Compliance: IPX-5
- Color: Black/Red
- Language (Manual): German, English, French, Polish
7. Warranty and Support
For warranty information, technical support, or to order replacement parts, please refer to the documentation included with your purchase or visit the official LEHMANN website. Keep your proof of purchase for warranty claims.