1. Introduction
The Atlantic Water Gardens MD750 is an energy-efficient magnetic induction pump designed for small water features and fountains. This manual provides essential information for the proper setup, operation, and maintenance of your MD750 pump to ensure long-lasting performance and enjoyment.
Figure 1.1: Atlantic Water Gardens MD750 Energy Efficient Water Feature and Fountain Pump.
2. Safety Information
Always prioritize safety when installing and operating electrical equipment, especially near water. Please read and understand all instructions before use.
- Ensure the pump is always fully submerged in water during operation to prevent overheating.
- Connect the pump only to a properly grounded, ground-fault circuit interrupter (GFCI) protected outlet.
- Do not operate the pump if the power cord is damaged. Contact a qualified electrician for repair or replacement.
- Never lift or carry the pump by its power cord.
- Disconnect power before performing any maintenance or cleaning.
- Keep children and pets away from the water feature during operation.
3. Product Overview
The Atlantic MD-Series magnetic induction pumps are designed for durability and efficiency in small water features and fountains. Key features include:
- Magnetic Induction Technology: Provides years of reliable service in demanding conditions.
- Improved Flow: Designed for better flows at higher heads.
- Easy Serviceability: Features a removable pre-filter and easily replaceable impeller assembly.
- Oversized Ceramic Shaft: Resists wear more effectively than steel, ensuring a longer service life.
- Rotatable Volute: Allows for maximum adaptability to various pump orientations.
- 20' Power Cord: Provides ample reach for most installations.
Figure 3.1: Diagram illustrating key features of the MD-Series pump, including oversized male threaded inlet/outlet, rotating volute, quarter twist volute access, large stable base, removable pre-filter, and tapered outlet fittings.
4. Setup and Installation
Proper pump selection and installation are crucial for optimal performance of your water feature. The MD750 is a submersible pump and must be placed entirely underwater.
4.1. Choosing the Right Pump (Calculating Total Dynamic Head)
To ensure your pump delivers the desired flow and appearance for your water feature, it's important to calculate the Total Dynamic Head (TDH). This video from Atlantic Water Gardens provides a comprehensive guide on how to do this, helping you select the perfect pump for your specific application.
Video 4.1: Official Atlantic Water Gardens guide on "Choosing The Perfect Pump By Calculating Total Dynamic Head." This video explains how to determine the correct pump size based on your water feature's flow and head requirements.
After determining your required flow and TDH, you can refer to the specifications table in Section 7 to confirm the MD750 meets your needs, or explore other models if a different capacity is required.
4.2. Physical Installation
- Placement: Position the pump on a stable, level surface within your pond or water feature. Ensure it is fully submerged and clear of debris.
- Tubing Connection: Connect appropriate tubing to the pump's male threaded outlet. The volute can be rotated to accommodate various tubing orientations.
- Electrical Connection: Route the 20-foot power cord safely to a GFCI-protected outdoor electrical outlet. Avoid kinks or damage to the cord.
- Initial Check: Before powering on, ensure all connections are secure and the pump is properly positioned.
Figure 4.1: Example of a water feature with a fountain pump creating a water flow over rocks.
5. Operating Instructions
Once installed, operating the MD750 pump is straightforward:
- Ensure the pump is fully submerged in water.
- Plug the pump's power cord into the GFCI-protected outlet. The pump will begin operating immediately.
- Monitor the water flow to ensure it meets your desired aesthetic. Adjust fountain heads or flow restrictors if applicable.
- The MD750 is designed for continuous, energy-efficient operation.
6. Maintenance
Regular maintenance will prolong the life and efficiency of your MD750 pump:
- Pre-filter Cleaning: The pump features a removable pre-filter. Periodically remove and clean the pre-filter to prevent clogging and maintain optimal flow.
- Impeller Assembly: A quarter-turn of the volute provides access to the impeller assembly for easy periodic cleaning. The impeller assembly is replaceable, ensuring the pump can run for years.
- Winterization: In freezing climates, remove the pump from the water feature before temperatures drop below freezing. Clean the pump thoroughly and store it in a frost-free location submerged in a bucket of water to keep seals moist.
7. Troubleshooting
If your MD750 pump is not performing as expected, consider the following common issues and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Pump does not run. | No power; GFCI tripped; Impeller jammed. | Check power supply and GFCI. Disconnect power, remove pre-filter, and clear any debris from the impeller. |
| Reduced water flow. | Clogged pre-filter; Debris in impeller; Kinked tubing. | Clean pre-filter. Disconnect power and clear impeller. Straighten tubing. |
| Pump is noisy. | Debris in impeller; Pump not fully submerged. | Clear impeller. Ensure pump is fully submerged in water. |
8. Specifications
Technical specifications for the Atlantic Water Gardens MD750 pump:
| Attribute | Detail |
|---|---|
| Model | MD750 |
| Brand | Atlantic Water Gardens |
| Max Flow (GPH) | 750 GPH |
| Watts | 90W (Max) |
| Voltage | 115V |
| Item Weight | 2.5 Pounds |
| Product Dimensions | 4.5 x 3.5 x 5 inches |
| Material | Polyresin |
| Power Source | Corded Electric |
Figure 8.1: Max Flow chart for various MD-Series pump models, showing GPH at different Total Dynamic Head (TDH) in feet. The MD750 provides 790 GPH at 0' TDH and 465 GPH at 10' TDH.
9. Warranty and Support
The Atlantic Water Gardens MD750 pump comes with a five-year limited warranty, ensuring peace of mind regarding its quality and durability.
For warranty claims, technical support, or additional product information, please visit the official Atlantic Water Gardens website or contact their customer service department. Keep your proof of purchase for warranty validation.
Visit the Atlantic Store: Atlantic Water Gardens Store
