1. Introduction
This manual provides essential information for the safe and efficient installation, operation, and maintenance of your SPX FLOW Johnson Cartridge Bilge Pump 500 GPH 12V. Please read these instructions carefully before using the product and retain them for future reference.
The SPX FLOW Johnson 12V cartridge pump incorporates advanced technology, drawing from extensive experience in marine applications. Its design focuses on durability, ease of maintenance, and efficient performance in both fresh and saltwater environments.
Figure 1: SPX FLOW Johnson Cartridge Bilge Pump 500 GPH 12V with fittings.
Key Features:
- Original Johnson Pump Quality: Ensures correct cooling flow, extended lifespan, and excellent self-priming.
- Durable Design: Engineered for maximum durability, even with infrequent use, providing consistent pressure and minimal fatigue.
- Easy Maintenance: Cartridge design allows for tool-free removal of the motor/impeller unit for cleaning or replacement.
- Efficient Performance: Low power consumption for its pumping capacity, suitable for lightly contaminated water with solids up to 1mm.
- Versatile Connections: Includes both straight and 90° Dura-Port elbow discharge connections to prevent stress cracking.
2. Safety Information
Always observe the following safety precautions to prevent injury or damage to the pump:
- Electrical Safety: Ensure all electrical connections are secure and waterproof. Use the specified fuse (5A) to protect the circuit. Disconnect power before installation or maintenance.
- Application: This pump is designed for marine bilge applications. It is not suitable for pumping water with high concentrations of oil or diesel. For such applications, a pump with a nitrile impeller is recommended.
- Temperature Limits: The operating temperature range is a minimum of +5 °C (41 °F) and a maximum of +60 °C (140 °F). Do not operate outside this range.
- Water Type: Suitable for fresh and saltwater.
- Solids: The pump can handle small solids up to 1mm in diameter. Larger debris may cause blockages or damage.
3. Setup and Installation
3.1 Mounting the Pump
Position the pump in the lowest part of the bilge where water collects. Ensure the pump is securely mounted to a stable surface using appropriate fasteners (not included). The pump is submersible, but proper placement helps maximize efficiency.
3.2 Electrical Connection
Connect the pump to a 12V DC power source. Follow the wiring diagram carefully. It is crucial to install an inline fuse (5A) on the positive wire to protect the pump and electrical system.
Figure 2: Fused Direct Installation Wiring Diagram.
- Positive (+) Connection: Connect the brown wire (BRN) to the positive terminal of your 12V DC battery, via a 5A fuse.
- Negative (-) Connection: Connect the black wire (BLK) to the negative terminal of your 12V DC battery.
- Ensure all connections are watertight and corrosion-resistant.
- An optional automatic or manual switch (not included) can be integrated into the positive line for control.
3.3 Hose Connection
The pump is supplied with both a straight Dura-Port and a 90° Dura-Port elbow fitting. Choose the fitting that best suits your installation requirements. The connection size is ¾" (19mm).
- Attach the appropriate Dura-Port fitting to the pump's discharge outlet.
- Connect a marine-grade hose of the correct diameter (¾" / 19mm) to the Dura-Port fitting.
- Secure the hose with a marine-grade hose clamp. Avoid overtightening to prevent stress cracking on the Dura-Port.
- Route the discharge hose upwards to a through-hull fitting, ensuring a continuous slope to prevent water from flowing back into the bilge.
4. Operating Instructions
The SPX FLOW Johnson Cartridge Bilge Pump is designed for straightforward operation. Once properly installed and connected to a 12V DC power source, the pump will activate when power is supplied.
- Manual Operation: If connected to a manual switch, activate the switch to turn the pump on and off as needed.
- Automatic Operation: If an automatic float switch (not included) is installed, the pump will automatically turn on when water levels rise and turn off when the water is cleared.
- The pump is self-priming and will begin pumping water immediately upon activation, provided it is submerged.
- Monitor the discharge to ensure water is being expelled effectively and that there are no blockages.
5. Maintenance
Regular maintenance ensures the longevity and reliable performance of your bilge pump. The cartridge design simplifies cleaning and replacement.
5.1 Cleaning and Cartridge Replacement
The motor/impeller cartridge can be removed without tools for cleaning or replacement. This allows you to service the pump without disconnecting the housing from the boat's plumbing.
Figure 3: Cartridge removal for cleaning or replacement.
- Disconnect Power: Always disconnect the pump from its power source before performing any maintenance.
- Remove Cartridge: Lift the tab on the top of the pump head, give the cartridge a slight twist, and pull it upwards to remove the all-in-one motor/impeller unit.
- Clean: Inspect the impeller and pump housing for any debris, marine growth, or blockages. Clean thoroughly with fresh water.
- Replace: If the motor or impeller is damaged, replace the entire cartridge unit.
- Reassemble: Insert the cleaned or new cartridge back into the pump housing, align the tab, and twist to secure it in place.
- Reconnect Power: Reconnect the pump to its power source and test its operation.
Regularly check the discharge hose for kinks or blockages and ensure hose clamps are secure.
6. Troubleshooting
If your SPX FLOW Johnson Bilge Pump is not operating correctly, refer to the following common issues and solutions:
| 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 automatic switch) |
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If the problem persists after attempting these solutions, contact customer support.
7. Specifications
Detailed technical specifications for the SPX FLOW Johnson Cartridge Bilge Pump 500 GPH 12V:
Figure 4: Technical Specifications from Product Packaging.
| Attribute | Value |
|---|---|
| Manufacturer | SPX Flow Technology Sweden AB |
| Part Number | 32-1450-01 |
| Model Number | Cartridge Bilge Pump 500 GPH 12V |
| Dimensions (L x W x H) | 11.2 x 8.8 x 8 cm (4.41 x 3.46 x 3.15 inches) |
| Weight | 0.27 kg (9.6 oz) |
| Power Source | 12 Volt DC (VDC) |
| Current Draw | 2.5 A |
| Fuse Size | 5A |
| Flow Rate (Straight) | 40 Liters Per Minute (630 GPH) |
| Flow Rate (0.9m Head) | 33 Liters Per Minute (525 GPH) |
| Max Lift Height | 3 Meters |
| Hose Connection Size | ¾" (19mm) |
| Material (Housing) | Thermoplast |
| Material (Motor Shaft) | Stainless Steel |
| Operating Temperature | +5 °C (41 °F) to +60 °C (140 °F) |
| Included Components | Straight Dura-Port, 90° Dura-Port elbow |
8. Warranty Information
The SPX FLOW Johnson Cartridge Bilge Pump 500 GPH 12V comes with a 3-year warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims.
The warranty does not cover damage caused by improper installation, misuse, neglect, unauthorized modifications, or operation outside the specified conditions (e.g., pumping oil/diesel, exceeding temperature limits).
9. Customer Support
For technical assistance, troubleshooting beyond this manual, or warranty inquiries, please contact your authorized SPX FLOW dealer or visit the official SPX FLOW website for support resources.
When contacting support, please have your product model number (Cartridge Bilge Pump 500 GPH 12V) and part number (32-1450-01) available.
