LANCHEZ 1.6HP
LANCHEZ 1.6HP Shallow Well Pump with Pressure Tank User Manual
Model: 1.6HP
1. Introduction
This manual provides essential information for the safe and efficient operation, installation, and maintenance of your LANCHEZ 1.6HP Shallow Well Pump with Pressure Tank. Please read this manual thoroughly before operating the pump and retain it for future reference.
The LANCHEZ 1.6HP Shallow Well Pump is designed for various water transfer applications, including garden irrigation, domestic water supply, and boosting water pressure. It features a powerful 1.6 HP motor, a 5-gallon pressure tank, and an automatic booster system for reliable performance.

Figure 1: LANCHEZ 1.6HP Shallow Well Pump with Pressure Tank.
2. Safety Information
Always observe the following safety precautions to prevent injury and damage to the pump:
- Ensure the pump is connected to a grounded power outlet (115V).
- Do not operate the pump without water. The pump incorporates temperature sensing technology with an automatic overload stop function to protect the motor in case of water shortage, but dry running should be avoided.
- Keep the pump away from flammable materials and explosive environments.
- Do not touch the pump or power cord with wet hands.
- Ensure all connections are secure and leak-free before operation.
- Regularly inspect the power cord for damage. Do not use if damaged.
- The waterproof On/Off switch ensures safe operation, but always exercise caution.

Figure 2: The pump features thermal overload protection to prevent damage from dry running.
3. Setup and Installation
Follow these steps for proper setup and installation:
- Placement: Place the pump on a stable, level surface. Ensure it is in a well-ventilated area and protected from direct weather exposure.
- Connections:
- Connect the water inlet pipe (1" NPT) to your water source.
- Connect the water outlet pipe (1" NPT) to your irrigation system or domestic water line.
- Ensure all connections are sealed tightly to prevent leaks and air intake.
- Priming the Pump: This is a critical step for first-time use.
- Locate the priming port on the top of the pump head.
- Unscrew the priming cap.
- Slowly fill the pump head with clean water until it is completely full.
- Replace the priming cap securely.
- Power Connection: Plug the 6.5ft power cord into a standard 115V grounded electrical outlet.

Figure 3: Key components of the pump, including inlet, discharge, pressure gauge, and safety switch.

Figure 4: Illustration showing how to add water to the pump head for priming.

Figure 5: Demonstrates connecting pipes and the two common inlet connection methods: from water taps or for self-priming from a source like a well or pond.
4. Operating Instructions
Once the pump is properly set up and primed, follow these steps for operation:
- Ensure all valves in your water system are open as required.
- Turn on the pump using the waterproof On/Off switch.
- The pump will automatically start when the pressure drops to 20 PSI and shut off when it reaches 40 PSI, maintaining consistent water pressure.
- Monitor the external pressure gauge for real-time pressure readings.
- When finished, turn off the pump using the On/Off switch.

Figure 6: Details of the automatic pressure switch, pressure gauge, and 5-gallon pressure tank for easy use.
Video 1: This video demonstrates the initial setup and operation of the LANCHEZ Shallow Well Pump, including priming and connecting to a water source for effective water transfer.
5. Maintenance
Regular maintenance ensures the longevity and optimal performance of your pump:
- Cleanliness: Keep the pump clean and free from debris. Ensure the cooling vents are not obstructed to allow for proper airflow and prevent overheating.
- Connections: Periodically check all pipe connections for tightness and signs of leakage. Tighten as necessary.
- Winterization: In freezing temperatures, drain the pump completely to prevent water from freezing and causing damage to the pump housing or internal components. Disconnect pipes and open drain plugs if available.
- Pressure Tank: The compact 5-gallon pressure tank is pre-assembled and designed for long service life. No specific user maintenance is typically required for the tank itself beyond ensuring it is not physically damaged.

Figure 7: The scientific cooling vent design ensures efficient heat dissipation, contributing to the pump's durability.
6. Troubleshooting
Refer to the table below for common issues and their solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Pump does not start. | No power; tripped circuit breaker; faulty switch. | Check power connection; reset breaker; contact customer service if switch is faulty. |
| Pump runs but no water. | Not primed; air leak in suction line; water source empty. | Re-prime the pump; check all suction connections for leaks; ensure water source is available. |
| Low pressure or flow. | Partial air leak; clogged impeller; undersized piping; low voltage. | Check for air leaks; inspect and clean impeller; ensure proper pipe sizing; verify voltage supply. |
| Pump cycles too frequently. | Pressure tank issue; small leak in system. | Check pressure tank pre-charge (if applicable, though this model is pre-assembled); inspect entire system for leaks. |
| Pinhole leaks in pump housing. | Material defect or corrosion over time. | Contact customer service for warranty claim or replacement. |
If the problem persists after attempting these solutions, please contact LANCHEZ customer service.
7. Specifications
| Feature | Detail |
|---|---|
| Brand | LANCHEZ |
| Model | 1.6HP Shallow Well Pump with Pressure Tank |
| Horsepower | 1.6 HP |
| Voltage | 115V / 60Hz |
| Max. Flow Rate | 1340 GPH (23 Gallons Per Minute) |
| Max. Head (Lift) | 150 Feet |
| Max. Suction | 26 Feet |
| Pressure Tank Capacity | 5 Gallons |
| Automatic Operation | Starts at 20 PSI, Shuts off at 40 PSI |
| Inlet/Outlet Size | 1" NPT |
| Power Cord Length | 6.5 ft |
| Material | Stainless Steel Casing |
| Item Weight | 33.6 pounds |
| Product Dimensions (L x W x H) | 17.32"L x 12.99"W x 19.69"H |

Figure 8: Visual representation of pump dimensions and key technical specifications.

Figure 9: Comprehensive technical specifications including flow rate vs. head pressure.
8. Warranty and Customer Service
LANCHEZ stands behind the quality of its products.
- Warranty: This product comes with a generous 3-year warranty. Please retain your proof of purchase for warranty claims.
- Customer Service: LANCHEZ customer service provides professional installation and maintenance support. For any inquiries, technical assistance, or warranty claims, please contact us through the seller's contact information on your purchase platform or visit the official LANCHEZ store.
We are committed to assisting you and ensuring your peace of mind.
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