SEAFLO SFBP1/SFBP2 Series Narrow Low Profile Time Sensing Bilge Pump User Manual

1. Product Overview

The SEAFLO SFBP1/SFBP2 series are compact, low-profile bilge pumps designed for marine applications. Featuring a time-sensing automatic operation, these pumps efficiently remove water from bilges, providing reliable performance in a narrow form factor. They are available in 12V and 24V configurations.

2. Specifications

3. Setup and Installation

3.1 Mounting

1. Select a flat, secure location in the lowest part of the bilge where the pump can be mounted horizontally.
2. Ensure the strainer base is easily accessible for routine cleaning and inspection.
3. Use appropriate marine-grade fasteners to secure the pump through the designated mounting holes.

3.2 Wiring

Refer to Figure 3 for wiring connections. Ensure all connections are watertight and protected from corrosion.

• Brown Wire (+): Connect to the positive (+) terminal of your boat's DC power supply. This can be connected via a manual switch for manual operation.
• Black Wire (-): Connect to the negative (-) terminal of your boat's DC power supply.
• Brown/White Wire (Auto): Connect to a separate positive (+) power source, typically through a dedicated automatic bilge pump switch or directly to a constant positive supply for time-sensing operation.

Important:

• Install the correct fuse in the positive line: 5A for 12V models (SFBP1-G1100-14B) or 3A for 24V models (SFBP2-G1100-14B).
• Use marine-grade, appropriately sized wiring to prevent voltage drop and ensure safe operation.

3.3 Hose Connection

1. Connect a 19mm (3/4") marine-grade discharge hose to the pump's outlet.
2. Use the provided hose barb fittings and an elbow fitting as necessary to route the hose.
3. Secure all hose connections with marine-grade hose clamps to prevent leaks.
4. Route the discharge hose upwards to a through-hull fitting, ensuring it has a continuous rise to prevent airlocks and backflow. Consider installing a siphon break if the discharge outlet is below the waterline.

4. Operation

4.1 Automatic (Time-Sensing) Mode

When the brown/white wire is connected to a constant positive power source, the pump will operate in time-sensing mode. It will periodically check for the presence of water. If water is detected, the pump will activate and run until the water level drops below the sensor, then shut off. The pump will continue to cycle, checking for water at regular intervals.

4.2 Manual Mode

If a manual switch is installed on the main positive (brown) wire, the pump can be activated manually regardless of the water level. This is useful for testing or for situations requiring continuous pumping.

4.3 Testing

After installation and before extended use, test the pump's operation:

1. Add water to the bilge until the pump activates in automatic mode.
2. Verify that the pump effectively removes the water and shuts off when the water level is low.
3. If a manual switch is installed, test its functionality.

5. Maintenance

Regular maintenance ensures optimal performance and extends the life of your bilge pump.

• Clean Strainer Base: Periodically remove the strainer base (refer to Figure 3 for location) and clean any accumulated debris such as leaves, hair, or other foreign objects from the impeller area and strainer screen. Blockages can significantly reduce pump efficiency or cause failure.
• Inspect Wiring and Connections: Regularly check all electrical wiring and connections for signs of corrosion, fraying, or damage. Ensure all connections are tight and watertight.
• Inspect Hose: Verify that the discharge hose is free of kinks, blockages, and leaks. Ensure the hose clamps are secure.
• Test Operation: Periodically test the pump's automatic and manual operation to confirm it is functioning correctly.
• Winterization: In areas prone to freezing temperatures, ensure the pump and its discharge line are completely drained to prevent ice damage. Disconnect the discharge hose and allow any residual water to escape.

6. Troubleshooting

7. User Tips

• Always use marine-grade wiring, connectors, and heat-shrink tubing for all electrical connections to ensure durability and prevent corrosion in the harsh marine environment.
• Consider installing a check valve in the discharge line to prevent water from flowing back into the bilge, especially if the discharge outlet is close to or below the waterline. Note that a check valve can slightly reduce the pump's flow rate.
• Mount the pump securely to a solid surface to minimize vibration and noise during operation.
• Regularly inspect your bilge for any unusual debris or potential sources of blockages that could affect pump performance.

8. Warranty and Support

For warranty information, technical support, or replacement parts, please contact your original point of purchase or the manufacturer directly. Keep your purchase receipt as proof of purchase.