1. Introduction
Thank you for choosing the Moonshan RO Delivery Demand Pump with Pressurized Accumulator Tank. This manual provides essential information for the safe and efficient installation, operation, and maintenance of your new water booster pump system. Please read this manual thoroughly before installation and keep it for future reference.
This system is designed to enhance water pressure for Reverse Osmosis (RO) filtration systems, particularly when low city water pressure is an issue or when RO-filtered water needs to be delivered to distant appliances like ice makers, refrigerators, or coffee machines.
Image 1.1: Visual comparison of water flow before and after pump installation, demonstrating improved water pressure.
2. Product Overview and Features
The Moonshan RO Delivery Demand Pump system is engineered for reliable and quiet performance, ensuring a consistent water supply from your RO system. Key features include:
- On-Demand Water Delivery: The 110V diaphragm pump operates in demand or delivery mode, effectively compensating for low city water pressure and ensuring stable performance for RO filtration.
- Auto On/Off Operation: A built-in pressure switch automatically activates the pump when water is demanded (0.7 GPM at 70 PSI) and shuts it off when pressure reaches 60 PSI, preventing overuse and extending system life.
- Quick-Connect Design: Features 1/4" OD push-in fittings for straightforward and easy installation.
- Pressurized Accumulator Tank: A 1-liter pre-pressurized tank works in conjunction with the pump to reduce cycling, minimize noise (≤45dB), and dampen vibration. It stabilizes flow, reduces water hammer, and prolongs pump service life.
- Vibration Control Kit: Includes anti-vibration rubber feet and pipe insulation tubing to further reduce noise and vibration during operation.
Image 2.1: The pressurized accumulator tank, highlighting its role in reducing pump cycling and noise.
Image 2.2: The included vibration control kit components: pipe insulation tubing and rubber anti-vibration pads.
3. Safety Information
Please observe the following safety precautions to prevent injury and damage to the product:
- Always disconnect power before performing any service or maintenance.
- Ensure the pump is installed in a dry, well-ventilated area, protected from freezing temperatures and direct sunlight.
- Do not operate the pump with flammable liquids.
- Verify all connections are secure and leak-free before operating the pump.
- Use only with potable water.
- Ensure the electrical supply matches the pump's voltage requirements (110V).
4. Package Contents
Verify that all components are present and undamaged:
- RO Delivery/Demand Pump (110V)
- Pressurized Accumulator Tank (1L)
- 1/4" Quick Connection Fittings
- Anti-Vibration Rubber Feet
- Pipe Insulation Tubing
- Instruction Manual
5. Specifications
| Specification | Value |
|---|---|
| Brand | Moonshan |
| Model Number | MS-DP |
| Material | Stainless Steel |
| Style | Diaphragm |
| Product Dimensions (L x W x H) | 9" x 4.72" x 3.94" |
| Item Weight | 8 Pounds |
| Power Source | Corded Electric |
| Voltage | 110 Volts |
| Maximum Flow Rate | 1 Gallon Per Minute (GPM) |
| Shut-off Pressure | 60 PSI |
| Operating Pressure (Demand) | 70 PSI |
| Accumulator Tank Capacity | 1 Liter (approx. 25 fl. oz) |
| Accumulator Tank Max Pressure | 125 PSI (8.6 Bar) |
| Accumulator Tank Pre-charge Pressure | 10 PSI (0.7 Bar) |
| Noise Level | ≤45dB |
Image 5.1: Detailed dimensions of the pump and accumulator tank.
6. Setup and Installation
Follow these steps for proper installation of your RO Delivery Demand Pump system:
- Placement: Choose a location near your RO system and the point of use (e.g., faucet, refrigerator). Ensure the area is dry, protected from freezing, and has access to a 110V power outlet.
- Mounting: Place the pump and accumulator tank on a stable, flat surface. Utilize the included anti-vibration rubber feet under the pump to minimize noise and vibration.
- Connections: The system uses 1/4" OD quick-connect fittings. Ensure tubing is cut cleanly and inserted fully into the fittings for a leak-proof seal.
- Water Flow Path:
- Connect the OUT port of your RO system to the IN port of the RO Delivery Pump.
- Connect the OUT port of the RO Delivery Pump to the IN port of the Accumulator Tank.
- Connect the OUT port of the Accumulator Tank to your water-using equipment (e.g., faucet, ice maker, refrigerator, coffee machine).
- Pipe Insulation: Apply the provided pipe insulation tubing to reduce pipe vibration and noise.
- Electrical Connection: Once all water connections are secure, plug the pump into a grounded 110V electrical outlet.
- Leak Check: Slowly turn on the water supply to the RO system and inspect all connections for leaks. Tighten any leaking connections.
Image 6.1: Illustration of the 1/4" quick connection for simple setup.
Image 6.2: Comprehensive installation diagram for connecting the pump system.
7. Operating Instructions
Once installed and connected, the Moonshan RO Delivery Demand Pump operates automatically:
- Automatic Operation: The pump is equipped with a pressure switch. When water is drawn from the RO system (e.g., by opening a faucet or an appliance demanding water), the pressure in the line drops. The pump will automatically turn on when the pressure falls below approximately 70 PSI.
- Automatic Shut-off: When the demand for water stops and the pressure in the system reaches approximately 60 PSI, the pump will automatically turn off.
- Accumulator Tank Function: The accumulator tank acts as a buffer, storing a small amount of pressurized water. This reduces the frequency of pump cycling, especially for small water draws, leading to quieter operation and extended pump life.
Image 7.1: Visual representation of the pump's automatic on/off functionality.
8. Maintenance
Regular maintenance ensures optimal performance and longevity of your pump system:
- Inspect Connections: Periodically check all water connections for leaks. Tighten fittings as necessary.
- Clean Exterior: Keep the pump and tank exterior clean and free of dust or debris. Use a damp cloth; do not use harsh chemicals.
- Check for Unusual Noise/Vibration: If you notice increased noise or vibration, inspect the anti-vibration feet and pipe insulation. Ensure the pump is securely mounted.
- Accumulator Tank Pressure: The accumulator tank is pre-charged. If you suspect issues with the tank, consult a professional. Do not attempt to alter the tank's pre-charge pressure without proper knowledge and tools.
- Winterization: If the pump is in an area subject to freezing, disconnect it and drain all water to prevent damage.
9. Troubleshooting
Refer to the following table for common issues and their solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Pump does not turn on | No power; Pressure switch not activated; Clogged inlet | Check power connection; Ensure water demand is present; Inspect inlet for blockages. |
| Low water pressure/flow | Partially closed valve; Clogged filter in RO system; Air in the line; Pump malfunction | Check all valves are fully open; Replace RO filters if needed; Bleed air from the system; Contact support if pump is faulty. |
| Pump cycles frequently | Small leak in the system; Accumulator tank issue; Pressure switch sensitivity | Check for leaks in all connections; Inspect accumulator tank for proper function; Contact support if cycling persists. |
| Excessive noise/vibration | Loose mounting; Worn anti-vibration components; Air in pump | Ensure pump is securely mounted; Check and replace anti-vibration feet/tubing if worn; Bleed air from the system. |
| Water leaks from connections | Loose fittings; Damaged O-rings/tubing | Tighten quick-connect fittings; Inspect and replace O-rings or tubing if damaged. |
10. Warranty and Support
Moonshan products are manufactured to high-quality standards. This product comes with a standard manufacturer's warranty against defects in materials and workmanship. For specific warranty details, please refer to the warranty card included with your product or contact Moonshan customer support.
If you encounter any issues or have questions regarding your RO Delivery Demand Pump, please contact our customer support team. Have your model number (MS-DP) and purchase information ready for faster service.
Contact Information: Please refer to the contact details provided on the product packaging or our official website.