ECO-WORTHY 33-Series 12V RV Fresh Water Diaphragm Pump Instruction Manual

1. Introduction

Thank you for choosing the ECO-WORTHY 33-Series 12V RV Fresh Water Diaphragm Pump. This pump is designed for reliable water transfer in various applications, including RVs, campers, boats, marine washdowns, and outdoor showers. It features a self-priming design, automatic on/off pressure switch, and thermal overload protection for safe and efficient operation.

Image 1.1: The ECO-WORTHY 33-Series 12V RV Fresh Water Diaphragm Pump with its components, including the pump unit, water strainer, and hose adapters.

2. Safety Information

• Thermal Overload Protection: The pump includes built-in thermal overload protection. If the internal temperature exceeds 70℃ (158℉), the circuit will automatically disconnect to protect the motor. The pump will resume operation once it cools down.
• Liquid Compatibility: This pump is designed for fresh water, drinking water, low salinity liquid, and weakly acidic liquid transfer. DO NOT PUMP FLAMMABLE LIQUIDS such as gasoline, kerosene, or ethanol, as this can cause fire or explosion.
• Electrical Connections: Ensure all electrical connections are secure and correctly polarized (positive to positive, negative to negative) to prevent damage to the pump or electrical system.
• Water Leaks: Regularly inspect all connections for leaks. Water leaks can lead to electrical hazards or pump malfunction.

Image 2.1: Warning against pumping flammable liquids and suitable liquid types for the pump.

3. Product Overview and Components

The ECO-WORTHY 33-Series pump is a compact and efficient diaphragm pump. Key features and components include:

• 3-Chamber Pump: Ensures high open flow of 4.0 gallons per minute (GPM).
• Improved Pressure Switch: Automatic On/Off functionality with a 45 PSI shut-off pressure. Adjustable pressure range of 17-60 PSI. Designed for up to 200,000 start-stops before failure.
• Quiet High-Power Copper Motor: Offers high durability, efficiency, excellent conductivity, heat dissipation, and resistance to environmental factors.
• Sealed Gasket: Prevents water from leaking into the motor.
• Rubber Base: Provides anti-vibration and noise reduction, along with corrosion resistance.
• 1/2" NPT External Pipe Thread: Standard connection for plumbing.

Image 3.1: Detailed view of the pump's internal components and features.

Image 3.2: Overview of the 3-chamber diaphragm pump design and key performance metrics.

4. Specifications

Image 4.1: Product dimensions for installation planning.

5. Setup and Installation

The ECO-WORTHY pump is designed for easy installation. Follow these steps for proper setup:

1. Mounting: Securely mount the pump in a dry, well-ventilated area. The rubber feet help reduce vibration and noise.
2. Install Strainer: Firmly tighten the included water strainer onto the inlet port of the pump. The strainer helps prevent debris from entering and damaging the pump.
3. Connect Hoses: Connect your water supply hose to the strainer inlet and your output hose to the pump's outlet. Use the provided 1/2" barbed hose adapters if needed. Ensure all connections are tight to prevent air leaks.
4. Electrical Connection: Connect the pump's wires to a 12V DC power source. Ensure correct polarity: red wire to positive (+), black wire to negative (-).
5. Prime the Pump: Before first use, ensure the water source is available and open a faucet in your system to allow air to escape. The pump is self-priming up to 9.8 vertical feet.

Note: Tighten all connecting parts to ensure there are no air leaks in the entire water system. Air leaks can cause the pump to fail to shut off, start and stop frequently, or not pump water effectively.

Image 5.1: Step-by-step visual guide for pump installation.

Image 5.2: Water strainer.

Image 5.3: Barbed hose adapters.

6. Operating Instructions

The ECO-WORTHY pump operates automatically based on water demand:

• Automatic On/Off: When you open a faucet or water outlet, the pump senses a drop in pressure and automatically starts running to supply water. When you close the faucet, the pump senses the pressure increase and shuts off.
• Quiet Operation: The pump is designed for quiet operation, comparable to a ceiling fan, ensuring minimal disturbance.
• Pressure Adjustment: The pump's shut-off pressure is factory set at 45 PSI. You can adjust the pressure within a range of 17-60 PSI. To adjust, open the top cover of the pressure switch and turn the screw clockwise to increase pressure or counter-clockwise to decrease pressure.

Image 6.1: Automatic pressure switch operation and adjustment.

Image 6.2: Detail of the pressure switch adjustment screw.

Image 6.3: The pump's quiet operation feature.

7. Maintenance

Regular maintenance ensures the longevity and optimal performance of your pump:

• Inspect Connections: Periodically check all hose connections and fittings for tightness and signs of leaks. Tighten as necessary.
• Clean Strainer: The inlet strainer should be regularly inspected and cleaned to remove any accumulated debris. A clogged strainer can reduce pump performance and lead to premature wear.
• Winterization: In freezing temperatures, ensure the pump and all water lines are completely drained to prevent damage from ice expansion.
• Storage: If storing the pump for an extended period, ensure it is clean, dry, and stored in a non-freezing environment.

8. Troubleshooting

Refer to the following table for common issues and their solutions:

9. Warranty and Support

ECO-WORTHY is committed to customer satisfaction. For warranty details or technical assistance, please contact our customer support team. We are available to help with any questions or concerns you may have regarding your product.

You can typically reach us through your order platform or by visiting the official ECO-WORTHY website for contact information.