1. Introduction
This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your Tsurumi Pump NK2-15 Electric Submersible Pump. Please read this manual thoroughly before operating the pump and retain it for future reference.
Figure 1: Tsurumi Pump NK2-15 Electric Submersible Pump
2. Safety Precautions
WARNING: Failure to follow these safety instructions may result in serious injury or death.
- Do not operate the pump in any flammable, corrosive, or toxic liquid.
- Do not pump any liquids above 104°F (40°C).
- Lift the pump by its handle and not the power cable.
- Use a power outlet with sufficient capacity and proper grounding.
- Do not run the pump dry; otherwise, it can overheat and cause damage.
- Always disconnect power before performing any maintenance or inspection.
3. Product Overview and Features
The Tsurumi Pump NK2-15 is a heavy-duty electric submersible pump designed for demanding dewatering applications. It is suitable for construction sites, mining operations, and disaster remediation efforts.
Key Features:
- High Head Performance: Capable of an impressive maximum head of 69 feet.
- Solids Handling: Designed to handle solids up to 0.334 inches in diameter.
- High Flow Rate: Delivers up to 100 gallons per minute (6000 GPH).
- Dual Voltage Capability: Internal terminal board allows for voltage change from 110V to 220V.
- Durable Construction: Features a semi-open impeller and synthetic rubber wear plates for maximum durability and sustained performance.
- Long Power Cord: Equipped with a 32-foot power cord.
Figure 2: NK2-15 highlighting High Head and Durability features.
Figure 3: Typical applications for the NK2-15 pump.
4. Specifications
Figure 4: Visual table of NK2-15 product specifications.
| Specification | Value |
|---|---|
| Brand | Tsurumi Pump |
| Model Number | NK2-15 |
| Power Source | Corded Electric |
| Horsepower | 2 HP |
| Voltage | 110V (convertible to 220V) |
| Maximum Flow Rate | 100 Gallons Per Minute (6000 GPH) |
| Maximum Lifting Height | 69 Feet |
| Discharge Size | 3 inches |
| Item Weight | 2.4 ounces (Note: This weight seems incorrect for a pump of this type, please verify with manufacturer) |
| Product Dimensions | 27.8 x 12.8 x 13.8 inches |
| Material | Aluminum |
| Cord Length | 32 feet |
Figure 5: NK2-15 Performance Curve (60Hz, 2 HP).
5. Setup
Follow these steps to set up your Tsurumi Pump NK2-15 for operation:
- Connect the Hose: Securely connect the discharge hose to the pump's discharge coupling. Ensure a tight connection to prevent leaks.
- Position the Pump: Lower the pump into the water using its handle. Ensure the pump is fully submerged and resting on a stable surface, free from obstructions that could block the intake.
- Connect to Power: Plug the pump's power cable into a properly grounded power receptacle with sufficient capacity.
Video 1: Tsurumi Pump Operation Guide. This video demonstrates the setup and operation of Tsurumi submersible pumps, including connecting the hose, lowering the pump, and connecting to power.
6. Operating Instructions
Once the pump is set up, follow these instructions for operation:
- Start Operation: The pump will begin operating once it is plugged into a live power source. Monitor the discharge to ensure water is being pumped effectively.
- Continuous Operation: The NK2-15 is designed for continuous operation, even at low water levels, due to its motor cooling efficiency. However, avoid running the pump completely dry for extended periods.
- Shut Down: To stop the pump, first unplug the power cable from the receptacle. Then, carefully remove the pump from the water using its handle. Finally, disconnect the hose from the discharge coupling.
7. Maintenance
Regular maintenance ensures the longevity and optimal performance of your Tsurumi Pump NK2-15.
- Regular Cleaning: Periodically clean the pump's intake screen and exterior to prevent debris buildup, which can reduce efficiency and cause overheating.
- Inspect Impeller and Wear Plates: The semi-open impeller and synthetic rubber wear plates are critical for performance. Inspect them regularly for wear or damage, especially after pumping abrasive materials. Replace if necessary.
- Check Power Cable: Examine the power cable for any signs of damage, cuts, or fraying. Do not use the pump if the cable is damaged.
- Storage: When not in use, clean the pump thoroughly, drain any remaining water, and store it in a dry, protected area.
8. Troubleshooting
If you encounter issues with your pump, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Pump does not start | No power, tripped circuit breaker, damaged cable | Check power supply, reset breaker, inspect cable for damage. |
| Reduced flow or no discharge | Clogged intake screen, worn impeller/wear plates, air lock | Clean intake, inspect/replace impeller/wear plates, ensure pump is fully submerged. |
| Pump runs but does not pump water | Air lock, insufficient water level, clogged discharge hose | Ensure pump is fully submerged, check water level, clear hose. |
| Pump overheats and shuts off | Running dry, clogged intake, motor overload | Ensure continuous water supply, clean intake, check for proper voltage/amperage. |
9. Warranty Information
Tsurumi products, including the NK2-15 pump, come with a 2-YEAR WARRANTY. This warranty covers defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims.
10. Customer Support
For any questions, concerns, or technical assistance regarding your Tsurumi Pump NK2-15, please contact Tsurumi (America), Inc. customer support. You can find contact information on the official Tsurumi Pump website or through your authorized dealer.
