1. Introduction
Thank you for choosing the SEACHOICE Cartridge Bilge Pump 500 GPH. This pump is designed for marine applications to remove unwanted water from bilges. Its compact design and efficient operation make it a reliable choice for various small to medium-sized vessels. This manual provides detailed instructions for proper installation, safe operation, and routine maintenance to ensure optimal performance and longevity of your bilge pump.
2. Safety Information
- Always disconnect power before installing, inspecting, or servicing the pump.
- Ensure all electrical connections are waterproof and properly insulated to prevent corrosion and short circuits.
- Install an appropriate fuse in the positive (+) lead as close to the power source as possible. Refer to the specifications for recommended fuse size.
- This pump is designed for pumping water only. Do not use it for flammable liquids, chemicals, or other hazardous materials.
- Ensure the pump is securely mounted to prevent movement during vessel operation.
- Important Note: This is a standard cartridge bilge pump and is NOT automatic. It requires an external float switch or a manual switch for operation.
3. Package Contents
The package should contain the following items:
- SEACHOICE Cartridge Bilge Pump 500 GPH (Model 19241)
- Instruction Manual (this document)
Note: Additional components such as hose, clamps, wiring, and switches are sold separately.
4. Setup and Installation
Proper installation is crucial for the pump's performance and safety. Follow these steps carefully:
- Mounting Location: Choose a flat, secure location in the lowest part of the bilge where water collects. Ensure the pump is easily accessible for inspection and maintenance.
- Mounting: Secure the pump to the bilge floor using appropriate stainless steel fasteners (not included). The base of the pump is designed for screw mounting.
- Hose Connection: Connect a suitable bilge hose (typically 3/4 inch inner diameter for 500 GPH pumps) to the pump's discharge port. Secure the hose with a stainless steel hose clamp to prevent leaks. Route the hose upwards to a through-hull fitting above the waterline, ensuring there are no kinks or sharp bends that could restrict flow.
- Wiring:
- This pump operates on 12V DC. Connect the brown wire to the positive (+) power source and the black wire to the negative (-) power source (ground).
- Install an in-line fuse holder with the recommended fuse size (refer to specifications) in the positive (+) wire, as close to the battery as possible.
- All electrical connections must be made above the highest possible water level in the bilge and sealed with marine-grade heat shrink connectors or waterproof sealant to prevent corrosion.
- External Switch: As this pump is not automatic, it requires an external switch. Connect the pump's positive wire through a manual switch or an automatic float switch (sold separately) to control its operation.
- Test Operation: After installation, temporarily apply power to the pump to ensure it operates correctly and that there are no leaks in the hose connections.
Figure 1: SEACHOICE Cartridge Bilge Pump 500 GPH. This image shows the general appearance of the bilge pump, including its compact design and discharge port.
5. Operating Instructions
The SEACHOICE Cartridge Bilge Pump 500 GPH is straightforward to operate once properly installed with an external switch:
- Manual Operation: If connected to a manual switch, simply toggle the switch to the 'ON' position to activate the pump and to the 'OFF' position to deactivate it. Monitor the bilge to ensure water is being removed effectively.
- Automatic Operation (with Float Switch): If connected to an automatic float switch, the pump will activate automatically when the water level rises and lifts the float switch. It will deactivate once the water level drops and the float switch returns to its resting position. Periodically check the float switch for free movement and debris.
- Avoid running the pump dry for extended periods, as this can cause premature wear and damage to the motor.
6. Maintenance
Regular maintenance ensures the reliable operation and extends the life of your bilge pump:
- Inspect Regularly: Periodically check the pump, wiring, and hose for any signs of wear, corrosion, or damage.
- Clean Strainer: The pump features a removable cartridge design. To clean the strainer, twist the motor cartridge counter-clockwise and lift it out of the base. Clear any debris (leaves, hair, oil, etc.) from the strainer base and the impeller area. Reinsert the cartridge and twist clockwise to lock.
- Check Connections: Ensure all electrical connections remain tight and free of corrosion. Re-seal any exposed connections if necessary.
- Test Operation: Regularly test the pump's operation, especially before and after extended periods of inactivity or before heading out on the water.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Pump does not run |
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| Pump runs but no water is discharged |
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| Pump runs continuously (with float switch) |
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8. Specifications
| Feature | Detail |
|---|---|
| Brand | SEACHOICE |
| Model Name | Cartridge Bilge Pump 500 GPH |
| Part Number | 50-19241 |
| Flow Rate | 500 Gallons Per Hour (GPH) |
| Power Source | 12V DC (AC/DC listed, but typically 12V DC for marine bilge pumps) |
| Material | Plastic |
| Style | Bilge Pump |
| Item Dimensions (LxWxH) | 6.25 x 3.5 x 7.25 inches |
| UPC | 719249192413 |
9. Warranty Information
This SEACHOICE product comes with a manufacturer's warranty. For specific details regarding the warranty period, coverage, and claims process, please refer to the warranty documentation included with your purchase or visit the official SEACHOICE website. Keep your proof of purchase for warranty purposes.
10. Support and Contact Information
If you have any questions, require technical assistance, or need to report an issue with your SEACHOICE Cartridge Bilge Pump, please contact SEACHOICE customer support directly. You can typically find contact information on the product packaging or the official SEACHOICE website:
Website: www.seachoice.com
Please have your model number (19241) and part number (50-19241) ready when contacting support.





