WASSERMANN 12V DC Washdown Pump Kit (Model 5WDP75-80-12V-W) User Manual

1. Introduction

Thank you for choosing the WASSERMANN 12V DC Washdown Pump Kit. This manual provides essential information for the safe and efficient operation, installation, and maintenance of your washdown pump kit. Please read these instructions thoroughly before installation and use, and retain them for future reference.

This kit is designed for various cleaning scenarios, including marine applications (boats, yachts), RVs, gardens, and general outdoor cleaning, offering powerful and reliable performance.

Figure 1: Overview of the WASSERMANN 5WDP Series Washdown Pump Kit components and typical application.

2. Safety Instructions

• Always disconnect power before performing any maintenance or installation procedures.
• Ensure the power source matches the pump's voltage requirements (12V DC).
• Do not operate the pump dry for extended periods, as this can cause damage.
• Protect electrical connections from water exposure to prevent short circuits.
• Keep hands and loose clothing away from moving parts during operation.
• This pump is designed for water transfer; do not use it with flammable liquids or chemicals.
• Ensure proper ventilation around the pump during operation.

3. Package Contents

Verify that all components are present and undamaged upon unpacking:

• 1 x 5WDP Series 12V DC Washdown Pump (7.5 GPM, 80 PSI)
• 1 x 20FT Coiled Hose
• 1 x Cleaning Spray Gun
• 1 x 50 Mesh Strainer
• Quick-install Connectors
• Stainless Steel Clamps

4. Specifications

Figure 2: Pump dimensions and included adapter types.

Figure 3: Key components of the WASSERMANN washdown pump.

5. Setup

5.1 Mounting the Pump

The pump should be mounted in a dry, well-ventilated area, protected from direct weather exposure. Utilize the rubber mounting base to reduce vibration and noise. Secure the pump using appropriate fasteners through the mounting holes.

5.2 Electrical Connection

• Connect the pump's red wire to the positive (+) terminal of a 12V DC power source (e.g., battery).
• Connect the pump's black wire to the negative (-) terminal of the 12V DC power source.
• It is recommended to install an appropriate fuse (not included) in the positive line for circuit protection.
• Ensure all electrical connections are secure and insulated.

5.3 Plumbing Connections

1. Inlet Connection: Attach the 50 Mesh Strainer to the pump's inlet port (typically marked "IN" or with an arrow pointing towards the pump). Connect your water supply hose from the water source to the strainer. Ensure all connections are watertight using the provided quick-install connectors and stainless steel clamps.
2. Outlet Connection: Connect the 20FT Coiled Hose to the pump's outlet port (typically marked "OUT" or with an arrow pointing away from the pump). Secure with a stainless steel clamp.
3. Spray Gun Connection: Attach the Cleaning Spray Gun to the free end of the 20FT Coiled Hose.

5.4 Priming the Pump

For optimal performance, ensure the pump is primed before first use:

• Ensure the water source is open and available to the pump inlet.
• Open the spray gun nozzle to allow air to escape.
• Turn on the pump. It may run for a few seconds to draw water and expel air. Once water flows steadily from the nozzle, the pump is primed.
• Close the spray gun nozzle. The pump will build pressure and then shut off automatically due to the pressure switch.

6. Operating Instructions

6.1 Powering On/Off

Once properly installed and primed, connect the pump to its 12V DC power source. The pump is ready for operation.

6.2 Automatic Pressure Control

• The pump features an automatic pressure switch. When the spray gun nozzle is opened, the pressure drops, and the pump automatically activates to maintain water flow.
• When the spray gun nozzle is closed, the pressure builds up to 80 PSI, and the pump automatically shuts off. This mechanism conserves energy and minimizes pump wear.

6.3 Using the Spray Gun

The included spray gun allows for adjustable spray patterns. Rotate the nozzle head to change from a fine stream to a wide fan spray, suitable for various cleaning tasks. The effective range of the spray nozzle is approximately 32.81 feet.

Figure 4: The spray gun in use, highlighting its effective range.

Figure 5: Versatile applications of the washdown pump kit.

7. Maintenance

7.1 Cleaning the Strainer

Regularly inspect and clean the 50 Mesh Strainer to prevent debris from entering the pump, which can reduce performance and cause damage. Disconnect power, unscrew the strainer housing, remove the mesh filter, rinse it thoroughly, and reassemble.

7.2 Checking Connections

Periodically check all hose and electrical connections for tightness and signs of wear or corrosion. Replace any damaged components immediately.

7.3 Winterization (for cold climates)

In freezing temperatures, drain all water from the pump and hoses to prevent damage from ice expansion. Disconnect inlet and outlet hoses, run the pump briefly (no more than 10 seconds) to expel remaining water, or use an RV/marine antifreeze solution according to product instructions.

8. Troubleshooting

9. Warranty and Support

WASSERMANN products are manufactured to high-quality standards. For warranty information or technical support, please refer to the contact details provided with your purchase documentation or visit the official WASSERMANN website. Please have your model number (5WDP75-80-12V-W) and purchase date available when contacting support.