MEDAS EL-DRAIN 750
MEDAS 1HP Submersible Sump Pump User Manual
Model: EL-DRAIN 750 | Brand: MEDAS
1. Introduction
The MEDAS 1HP Submersible Sump Pump is designed for efficient water removal from various areas such as basements, swimming pools, flooded spaces, and ponds. Its robust construction and high flow rate make it suitable for both clean and dirty water applications.

Figure 1: MEDAS 1HP Submersible Sump Pump
2. Safety Information
Always adhere to the following safety guidelines to prevent injury or damage to the pump:
- Do not move the water pump by pulling the power cord.
- Ensure the diameter of particles in the water does not exceed 1.2 inches (38mm) to prevent clogging.
- Verify that the exhaust hole is not blocked by debris before operation.
- Submerge the pump completely into the water for 2-3 minutes to allow air to escape and the pump body to fill with water. This ensures proper priming.
- It is recommended to use the pump when the water level is higher than the pump body.
- Avoid dry running the pump.
- Always disconnect power before handling or performing maintenance on the pump to avoid electric shock.
- Lift the pump by its ergonomic handle or by ropes, not by the power cord.
- The pump is equipped with overload protection.

Figure 2: Ergonomic handle and base designed for particle passage.
3. Package Contents
Verify that all items are present and undamaged:
- MEDAS 1HP Submersible Water Pump
- 3/4" Garden Hose Adapter
- Adapter for 1-1/2", 1-1/4", or 1" hoses (integrated into the discharge port)
4. Setup and Installation
The MEDAS sump pump is designed for easy installation. Follow these steps:
- Choose Discharge Connection: The pump is equipped with a 1-inch NPT discharge. It also includes a GHT 3/4" garden hose fitting and an adapter for 1-1/2", 1-1/4", or 1" hoses. Select the appropriate fitting for your hose.
- Attach Hose: Securely attach your chosen hose to the pump's discharge port. Ensure a tight connection to prevent leaks.
- Position the Pump: Place the pump in the area where water needs to be removed. Ensure it is on a stable, level surface.
- Submerge for Priming: Before plugging in, fully submerge the pump in water for 2-3 minutes to allow air to escape and the pump body to fill with water. This ensures proper priming.
- Connect Power: Plug the 16.4ft power cord into a suitable 115V electrical outlet.

Figure 3: Connecting a 3/4" NPT garden hose to the pump.

Figure 4: Diagram showing various hose fitting options (1", 1" NPT, 1-1/4", 1-1/2" NPT).
5. Operating Instructions
Once properly set up, the MEDAS sump pump operates automatically when submerged in water. It is designed to handle both clean and dirty water with solids up to 38mm.
- Automatic Operation: The pump will begin pumping water once it is submerged and powered on.
- Water Level: For optimal performance, ensure the water level is above the pump body. The pump can reduce water levels down to approximately 1.4 inches.
- Continuous Monitoring: While operating, periodically check the pump's performance and the water level. Avoid prolonged dry running.
- Applications: This pump is ideal for draining basements, emptying swimming pools, irrigating gardens, and clearing flooded areas.

Figure 5: The 1HP Submersible Utility Pump effectively draining water.
6. Maintenance
Regular maintenance ensures the longevity and efficient operation of your MEDAS sump pump:
- Cleaning: After each use, especially when pumping dirty water, rinse the pump thoroughly with clean water to remove any debris or sediment.
- Impeller Check: Periodically inspect the impeller area for any lodged debris that might hinder performance. The open design helps prevent clogging.
- Storage: When not in use, store the pump in a dry, protected area, away from extreme temperatures.
- Cord Inspection: Regularly check the power cord for any signs of damage, fraying, or cuts. Do not use the pump if the cord is damaged.

Figure 6: Internal components like the thermally protected motor, designed for durability.
7. 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, clogged impeller, airlock. | Check power connection. Clear impeller. Ensure pump is fully submerged and primed. |
| Pump runs but no water is discharged. | Airlock, clogged discharge hose, insufficient water level. | Ensure pump is fully submerged and primed. Check hose for kinks or blockages. Ensure water level is above pump body. |
| Reduced flow rate. | Partial clog, worn impeller, low voltage. | Clean pump and hose. Check power supply. |
| Pump stops unexpectedly. | Overload protection activated, dry running. | Allow pump to cool down. Ensure continuous water supply. |
8. Specifications
| Feature | Detail |
|---|---|
| Model | EL-DRAIN 750 |
| Power | 1 HP |
| Maximum Flow Rate | 3434 GPH (57.23 Gallons Per Minute) |
| Maximum Lifting Height (Head) | 31 ft |
| Voltage | 115V |
| Power Source | Corded Electric |
| Cord Length | 16.4 ft |
| Material | Durable, corrosion-resistant thermoplastic |
| Max Particle Size | Up to 38mm (1.2 inches) |
| Product Dimensions | 11.69"L x 7.87"W x 7.87"H |
| Item Weight | 7.85 pounds (3.57 Kilograms) |
| Discharge Port | 1-inch NPT, GHT 3/4", and adapter for 1-1/2", 1-1/4", or 1" hoses |

Figure 7: Product dimensions and key features like IPX8 safety design.

Figure 8: Details on the pure copper motor, three-layer seal, and stainless steel rotor shaft.
9. Warranty and Support
The MEDAS 1HP Submersible Sump Pump comes with a 1-year warranty. For any questions or concerns regarding your product, please do not hesitate to reach out to MEDAS customer support.
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