1. Introduction
This manual provides essential information for the safe and efficient installation, operation, and maintenance of your Grundfos UPS 25-80 N 180 circulator pump. Please read these instructions carefully before installing or operating the pump to ensure proper function and to prevent injury or damage.
The Grundfos UPS 25-80 N 180 is designed for circulating liquids in heating and air-conditioning systems. It is a robust and reliable unit, built with rust-proof stainless steel components for durability.
2. Safety Information
Always observe local regulations and safety standards during installation and operation. Failure to comply with safety instructions may result in personal injury or damage to the equipment.
- Ensure the power supply is disconnected before any installation, maintenance, or repair work.
- The pump must be installed by qualified personnel.
- Do not operate the pump without liquid. Dry running can cause severe damage.
- Protect the pump from frost.
- Wear appropriate personal protective equipment (PPE) during installation and maintenance.
3. Product Overview
The Grundfos UPS 25-80 N 180 is a high-efficiency circulator pump. Its compact design and robust construction make it suitable for various applications.
Figure 1: Grundfos UPS 25-80 N 180 Circulator Pump. This image displays the red and black pump unit, highlighting the motor housing, pump body, and threaded connections. The visible label on the motor provides technical specifications such as type, voltage, and frequency.
Key Components:
- Pump Housing: Red, made of durable material.
- Motor: Black, integrated with the pump.
- Terminal Box: For electrical connections.
- Speed Selector: Allows adjustment of pump speed (if applicable to model).
- Connection Threads: For integration into piping systems.
4. Setup and Installation
Proper installation is crucial for the pump's performance and longevity.
- Mounting Position: Install the pump with the motor shaft in a horizontal position. Ensure adequate space for maintenance.
- Piping: Connect the pump to the piping system using appropriate fittings. Ensure the system is clean and free of debris before installation.
- Electrical Connection: Connect the pump to a 230V, 50Hz power supply. Ensure all electrical connections are made by a qualified electrician and comply with local regulations. The pump is rated for IP 44 protection.
- System Filling: After installation, fill the system with the appropriate liquid and vent any air from the pump and piping.
- Leak Check: Check all connections for leaks before starting the pump.
5. Operating Instructions
Once installed and connected, the pump is ready for operation.
- Power On: Switch on the power supply to the pump.
- Speed Selection: If your model has a speed selector, choose the appropriate speed setting for your system's requirements. Refer to system documentation for optimal flow rates.
- Monitoring: Observe the pump during initial operation for any unusual noises or vibrations.
- Temperature: The pump is designed for liquid temperatures up to TF 110. Ensure the operating temperature remains within specified limits.
6. Maintenance
Regular maintenance ensures optimal performance and extends the pump's lifespan.
- Cleaning: Keep the pump exterior clean. Do not use abrasive cleaners.
- Inspection: Periodically check for leaks, corrosion, or damage to the electrical cable.
- System Flushing: Ensure the system fluid is clean and free of particles that could damage the pump.
- Winterization: If the system is shut down for an extended period in cold conditions, drain the pump to prevent frost damage.
7. Troubleshooting
This section addresses common issues you might encounter with your circulator pump.
| Problem | Possible Cause | Solution |
|---|---|---|
| Pump does not start | No power supply; Motor seized; Air in pump | Check power connection/fuse; Attempt to free rotor (if accessible and safe); Vent pump. |
| Insufficient flow | Air in system; Incorrect speed setting; Blockage in piping | Vent system; Adjust speed setting; Check for and remove blockages. |
| Noisy operation | Air in pump/system; Cavitation; Worn bearings | Vent pump/system; Check system pressure; Contact qualified service personnel. |
| Leakage | Loose connections; Damaged seals | Tighten connections; Replace seals (contact service). |
8. Technical Specifications
| Specification | Value |
|---|---|
| Brand | Grundfos |
| Model Number | UPS 25-80 N 180 (Item Model: UP-N) |
| Voltage | 230 Volts |
| Frequency | 50 Hz |
| Material | Rust-proof stainless steel |
| Color | Red, black |
| Product Dimensions (D x W x H) | 22.8 cm x 18.8 cm x 22.8 cm |
| Product Weight | 4.65 kg |
| Max. System Pressure | 1.0 MPa |
| Temperature Class | TF 110 |
| Protection Class | IP 44 |
| Country of Origin | Germany |
9. Warranty and Support
For warranty information, please refer to the documentation provided with your purchase or contact your Grundfos distributor. For technical support or service, please reach out to an authorized Grundfos service center or your local Grundfos representative.
