Knifel KN-001-A
Knifel Submersible Pump 880GPH (Model KN-001-A) Instruction Manual
1. Introduction
Thank you for choosing the Knifel Submersible Pump 880GPH. This pump is designed for reliable and efficient water circulation in various applications, including fountains, hydroponic systems, ponds, and aquariums. Its ultra-quiet operation and robust construction ensure long-lasting performance. Please read this manual thoroughly before installation and operation to ensure safe and optimal use of your pump.
2. Safety Instructions
To prevent electric shock, injury, or damage to the pump, always follow these safety guidelines:
- Electrical Safety: Ensure the power supply voltage matches the pump's requirements (110V). Always connect the pump to a properly grounded outlet. Do not operate the pump if the power cord or plug is damaged. Never cut or modify the power cord.
- Water Safety: Do not handle the pump with wet hands. Disconnect the power supply before performing any maintenance or cleaning. Ensure the pump is fully submerged in water during operation to prevent dry burning and overheating.
- Placement: Position the pump on a stable, flat surface. Ensure it is not obstructed by debris.
- Children and Pets: Keep children and pets away from the pump and water feature during operation.
- Intended Use: This pump is designed for water circulation only. Do not use it for flammable liquids, corrosive chemicals, or other non-water applications.
3. Package Contents
Verify that all items are present in your package:
- 1 x Knifel Submersible Pump 880GPH
- 1 x Filter Sponge
- 3 x Nozzle Adapters (0.75 inch/19mm, 0.62 inch/16mm, 0.51 inch/13mm)
- 4 x Suction Cups (pre-attached to pump base)

Image: The Knifel Submersible Pump, including its power cord and three different sized nozzle adapters, ready for use.
4. Product Features
- Ultra-Quiet Design: Engineered with a high-quality rotor and copper windings to minimize operational noise, ensuring a peaceful environment.
- Overheating Protection: Equipped with internal temperature control to prevent damage from dry burning, enhancing pump longevity.
- High Performance: Delivers a maximum flow rate of 880 GPH (3500 L/H) and a maximum lift height of 10.2 feet, suitable for various water features.
- Integrated Filter Sponge: Effectively filters large debris to prevent pump blockage and maintain water clarity.
- Secure Mounting: Features four powerful suction cups on the base for stable placement on horizontal or vertical surfaces.
- Detachable and Cleanable: Designed for easy disassembly without tools, simplifying cleaning and maintenance.

Image: The pump highlighting its internal sponge filter and specifications for flow rate, lift height, and overheating protection.

Image: A diagram explaining the ultra-quiet design, featuring a high-quality rotor and 100% copper winding, comparing its low noise level to common sounds.
5. Specifications
| Specification | Value |
|---|---|
| Brand | Knifel |
| Model Number | KN-001-A |
| Maximum Flow Rate | 880 GPH (3500 Liters Per Hour) |
| Maximum Lifting Height | 10.2 Feet |
| Power Source | AC/DC |
| Voltage | 110 Volts |
| Power Consumption | 60 Watts |
| Material | Acrylonitrile Butadiene Styrene (ABS) |
| Color | Copper (referring to internal components, pump exterior is typically dark grey/black) |
| Product Dimensions (L x W x H) | 6" x 4" x 5.7" |
| Item Weight | 2.2 pounds (1000 Grams) |
| Power Cord Length | 6 feet |
| Specific Uses | Fountain, Pond, Water Garden, Aquarium, Hydroponics |

Image: A visual representation of the pump's specifications, including material, color, flow rate, lift height, power cord length, and physical dimensions.
6. Setup
6.1 Attaching Nozzles
- Select the appropriate nozzle adapter (0.75 inch, 0.62 inch, or 0.51 inch) that fits your tubing or desired water flow.
- Thread the chosen nozzle adapter onto the pump's outlet port. Ensure it is securely tightened to prevent leaks.
- Connect your water tubing to the nozzle adapter.
6.2 Pump Placement
- Place the pump in the desired location within your water feature (fountain, pond, aquarium, hydroponic reservoir).
- Ensure the pump is fully submerged in water. The suction cups on the base can be used to secure the pump to a clean, smooth surface, either horizontally or vertically.
- Position the pump away from heavy debris or sediment to minimize clogging.

Image: The pump displaying the three included nozzle sizes (0.75, 0.62, 0.51 inches) and its overall dimensions (L5.1*W3.4*H4.5 inches), along with the 6-foot power cord.
7. Operation
- After ensuring the pump is correctly installed and fully submerged, plug the power cord into a grounded electrical outlet.
- The pump will begin circulating water immediately.
- Flow Adjustment: This model features an adjustable flow control on the side of the pump. Rotate the plate to increase or decrease the water flow rate as desired.
- Monitor the water level regularly to ensure the pump remains submerged. Operating the pump dry can lead to overheating and damage.

Image: Illustrations of the pump's versatile applications, including fountains, hydroponic systems, ponds, rockeries, and aquariums.
8. Maintenance
Regular maintenance ensures optimal performance and extends the life of your pump.
8.1 Cleaning the Pump
- Disconnect Power: Always unplug the pump from the power outlet before any cleaning or maintenance.
- Disassemble: The pump can be easily disassembled without tools. Gently pull apart the front cover and impeller housing.
- Clean Filter Sponge: Remove the filter sponge and rinse it thoroughly under clean water to remove accumulated debris. Replace if heavily worn or damaged.
- Clean Impeller: Carefully remove the impeller. Clean the impeller and its shaft with a small brush or cotton swab to remove any mineral deposits, algae, or debris. Ensure the impeller spins freely.
- Clean Housing: Rinse the pump housing and other components with clean water.
- Reassemble: Reassemble all parts in reverse order, ensuring they fit snugly.
Frequency: Clean the pump every 2-4 weeks, or more frequently depending on water quality and debris levels.
9. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Pump does not start | No power supply Impeller jammed Damaged motor | Check power connection and outlet Clean impeller and housing Contact customer support if motor is damaged |
| Reduced water flow | Clogged filter/impeller Kinked or obstructed tubing Low water level Flow adjustment set too low | Clean filter sponge and impeller Check and clear tubing Add water to ensure pump is fully submerged Adjust flow control on the pump |
| Pump is noisy | Debris in impeller Pump not fully submerged Vibration against hard surface | Clean impeller Ensure pump is fully submerged Adjust pump position or use a soft mat underneath |
| Pump stops intermittently | Overheating protection activated Low water level | Check water level and ensure pump is submerged. Allow pump to cool down before restarting. Add water to ensure pump is fully submerged |
10. Warranty and Support
Knifel products are manufactured to high-quality standards. For specific warranty details, please refer to the product packaging or contact your retailer. If you encounter any issues or have questions regarding your Knifel Submersible Pump, please contact Knifel customer support for assistance.
Note: Unauthorized disassembly or modification of the pump may void the warranty.
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