1. Introduction
This manual provides essential information for the safe and efficient operation of your SHYLIYU 3QGD1.2-100-0.75V2 Deep Well Submersible Pump. Please read these instructions thoroughly before installation, operation, or maintenance to ensure proper use and to prevent damage or injury. Keep this manual for future reference.
2. Safety Information
WARNING: Failure to follow these safety instructions may result in electric shock, fire, serious injury, or death.
- Electrical Safety: Ensure the power supply matches the pump's voltage (220V-240V, 50Hz). All electrical connections must be performed by a qualified electrician and comply with local regulations. Always disconnect power before servicing the pump.
- Water Immersion: This pump is designed for submersible use only. Do not operate the pump out of water. DO NOT RUN WITHOUT WATER. Running dry will cause severe damage to the pump.
- Installation: Securely lower the pump into the well using a strong rope or cable attached to the designated eyelets. Do not use the power cable to lift or lower the pump.
- Children and Pets: Keep children and pets away from the pump and its operating area.
- Maintenance: Only perform maintenance as described in this manual. For complex repairs, contact qualified service personnel.

Image 2.1: Overview of the submersible pump, highlighting the water inlet and outlet. The critical warning "DO NOT RUN WITHOUT WATER" is also visible, emphasizing the importance of operating the pump only when fully submerged.
3. Product Overview and Features
The SHYLIYU 3QGD1.2-100-0.75V2 is a robust deep well submersible pump designed for reliable water supply. Its durable construction and efficient design make it suitable for various applications.
Key Features:
- Durable Construction: Built from high-quality stainless steel for corrosion resistance and longevity.
- Efficient Motor: Features a 0.75 kW (1 HP) motor capable of delivering water up to 116 meters.
- High Flow Rate: Provides a maximum flow rate of 2300 Liters per Hour (approximately 10 Gallons per Minute).
- Precision Components: Incorporates a high-precision, moisture and rust-proof rotor, high-precision bearings, and a refined, corrosion-resistant steel shaft for reliable performance.
- Compact Design: With a 3-inch diameter, it fits into narrow boreholes.

Image 3.1: Detailed view of the pump's internal components, including the high-precision rotor, bearings, and refined steel shaft, all designed for durability and resistance to moisture and rust.
4. Specifications
Refer to the following table for detailed technical specifications of the SHYLIYU 3QGD1.2-100-0.75V2 pump:
| Specification | Value |
|---|---|
| Model Number | 3QGD1.2-100-0.75V2 |
| Power | 0.75 kW (1 HP) |
| Voltage | 220V-240V, 50Hz |
| Maximum Flow Rate | 2300 L/H (approx. 10 GPM) |
| Maximum Delivery Head | 116 meters |
| Pump Diameter | 3 inches (7.62 cm) |
| Water Outlet Diameter | 1 inch (2.54 cm) |
| Cable Length | 49 feet (approx. 15 meters) |
| Material | Stainless Steel |
| Item Dimensions (L x W x H) | 56 x 8 x 8 cm |
| Item Weight | 6.7 kg |
| IP Rating | IP68 |

Image 4.1: Visual representation of the pump's key dimensions, including its 3-inch diameter, 26-inch length, and the 49-foot power cable.

Image 4.2: A close-up view of the pump's identification label, displaying critical specifications such as model type, power (0.75 kW, 1 HP), voltage (220V-240V), frequency (50 Hz), maximum flow rate (2.3 m³/h), maximum head (116m), and IP68 rating.
5. Setup and Installation
Proper installation is crucial for the pump's performance and longevity. If you are unsure about any step, consult a qualified professional.
5.1 Pre-Installation Checks:
- Inspect the pump for any visible damage from shipping.
- Ensure the well casing diameter is sufficient for the 3-inch pump.
- Verify the power supply matches the pump's requirements (220V-240V, 50Hz).
- Prepare a strong, non-corrosive rope or safety cable to suspend the pump. Do not use the electrical cable for suspension.
5.2 Connecting the Discharge Pipe:
- Attach a 1-inch (2.54 cm) discharge pipe to the pump's water outlet. Use appropriate thread sealant to ensure a watertight connection.
- Ensure the pipe is securely fastened and can withstand the pump's pressure.
5.3 Lowering the Pump:
- Attach the safety rope/cable to the pump's designated eyelets.
- Carefully lower the pump into the well, ensuring it remains vertical and does not get stuck.
- Position the pump at least 1 meter (3 feet) above the bottom of the well to avoid drawing in sediment. Ensure it is always fully submerged during operation.
5.4 Electrical Connection:
- Connect the pump's power cable to a suitable power source via a control box (if applicable) and a circuit breaker.
- Ensure all connections are waterproof and protected from environmental elements.
- Ground the pump properly according to electrical codes.
6. Operating Instructions
Once installed, operating the pump is straightforward. Always ensure the pump is fully submerged before starting.
6.1 Initial Startup:
- After installation, turn on the power supply to the pump.
- The pump will begin to draw water. Monitor the discharge for consistent flow and pressure.
- Check for any unusual noises or vibrations. If detected, immediately shut off the pump and investigate.
6.2 Continuous Operation:
- The pump is designed for continuous duty, but avoid prolonged dry running.
- Regularly check the water level in the well to prevent the pump from running dry.
6.3 Applications:
This pump is ideal for various water supply needs, including:
- Domestic water supply for homes and villages.
- Agricultural irrigation for farms and gardens.
- Industrial water transfer applications.

Image 6.1: Examples of typical application fields for the SHYLIYU deep well submersible pump, illustrating its versatility in providing water for residential buildings, agricultural irrigation, and general water supply.
7. Maintenance
Regular maintenance ensures optimal performance and extends the lifespan of your pump.
7.1 Routine Checks:
- Periodically check the pump's performance, including flow rate and pressure.
- Inspect the power cable for any signs of wear, cuts, or damage.
- Ensure the well water level is consistently above the pump's inlet.
7.2 Cleaning:
- If the pump's performance degrades due to sediment buildup, it may need to be retrieved and cleaned.
- Before cleaning, disconnect the power supply. Rinse the pump thoroughly with clean water, removing any debris from the inlet screen and impeller area.
7.3 Winterization (for cold climates):
- In areas prone to freezing temperatures, ensure the pump and discharge pipes are protected from frost.
- If the pump is installed in a shallow well that might freeze, consider removing it for the winter or ensuring the well is adequately insulated.
8. Troubleshooting
Before contacting support, review the following common issues and their solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Pump does not start | No power; tripped circuit breaker; faulty wiring; motor issue | Check power supply; reset breaker; inspect wiring (by electrician); contact support |
| Low or no water flow | Pump running dry; clogged inlet/impeller; pipe blockage; low well water level | Ensure pump is submerged; clean inlet/impeller; check pipes; monitor well level |
| Pump runs continuously | Leak in discharge pipe; faulty pressure switch (if installed); well depletion | Inspect pipes for leaks; check/replace pressure switch; allow well to recover |
| Excessive noise or vibration | Pump not properly suspended; foreign object in pump; worn bearings | Re-secure pump; retrieve and inspect pump; contact support for repair |
If the problem persists after attempting these solutions, please contact customer support.
9. Warranty and Support
9.1 Warranty Information:
This SHYLIYU pump comes with a one-year warranty from the date of purchase. Please note that defects resulting from incorrect use, improper installation, or unauthorized modifications are not covered under this warranty. Keep your proof of purchase for warranty claims.
9.2 Customer Support:
For technical assistance, warranty claims, or spare parts, please contact SHYLIYU customer support through your retailer or the official SHYLIYU website. Provide your pump's model number (3QGD1.2-100-0.75V2) and purchase details when contacting support.