1. Introduction
This manual provides essential information for the safe and efficient installation, operation, and maintenance of the Danfoss Electronic Expansion Valve ETS250L 034G3606. This valve is designed for precise control of refrigerant flow in various refrigeration and air conditioning systems, particularly as a spare part for coolers. Please read this manual thoroughly before installation and use.
Product Overview:
- Product Type: Electronic Expansion Valve
- Model: ETS250L 034G3606
- Included Cable: M12 Cable 034G7073
- Part Number: 025-41565-000
- Brand: Danfoss
- Origin: Made in Denmark
- Application: Cooler spare parts, Commercial Manufacture
2. Safety Information
Always observe general safety precautions when working with refrigeration systems. This device operates under pressure and involves electrical connections. Improper installation or handling can lead to serious injury or equipment damage.
- Only qualified personnel should install, operate, and maintain this equipment.
- Ensure the system is depressurized and de-energized before performing any work.
- Wear appropriate personal protective equipment (PPE).
- Refer to all relevant local and national safety regulations.
3. Installation and Setup
The Danfoss ETS250L electronic expansion valve requires careful installation to ensure optimal performance and safety.
- Unpacking: Carefully remove the valve and M12 cable from its packaging. Inspect for any signs of damage during transit.
- Orientation: Identify the flow direction arrow on the valve body. The valve must be installed in the correct direction of refrigerant flow.
- Connection:
- The valve features copper connections for brazing into the refrigerant line. Ensure proper brazing techniques are used to prevent leaks and overheating of the valve body.
- Connect the M12 cable (034G7073) to the valve's electrical connector. Ensure a secure and watertight connection.
- Mounting: Securely mount the valve in a location that allows for easy access for inspection and maintenance, and protects it from physical damage.
- System Integration: Connect the M12 cable to the appropriate system controller. Refer to the cooler system's specific wiring diagrams and control instructions for proper integration.
- Leak Testing: After installation, perform a thorough leak test on all refrigerant connections using an appropriate leak detection method.
- Evacuation and Charging: Evacuate the refrigeration system to the required vacuum level and charge with the correct type and amount of refrigerant as per the cooler system's specifications.
Figure 1: Danfoss ETS250L Electronic Expansion Valve showing copper connections and flow direction arrow.
Figure 2: Valve label with model number ETS250L 034G3606 and operational specifications.
4. Operation
The Danfoss ETS250L is an electronically controlled expansion valve. Its operation is fully automated and managed by the refrigeration system's controller. It receives signals from the controller to adjust the refrigerant flow into the evaporator, optimizing system performance and efficiency.
- No manual adjustment is typically required during normal operation.
- Ensure the system controller is correctly configured for the ETS250L valve.
- Monitor system pressures and temperatures to confirm proper valve function.
5. Maintenance
Regular maintenance helps ensure the longevity and reliable operation of the electronic expansion valve.
- Visual Inspection: Periodically inspect the valve and its connections for any signs of leaks, corrosion, or physical damage.
- Electrical Connections: Check the M12 cable and its connection to the valve for tightness and integrity. Ensure there is no moisture ingress.
- Cleaning: Keep the exterior of the valve clean and free from dust or debris that could impede heat dissipation or access.
- System Checks: As part of routine refrigeration system maintenance, verify the valve's operational parameters through the system controller.
- Professional Service: Any internal maintenance or repair should only be performed by a certified refrigeration technician.
6. Troubleshooting
If the refrigeration system is not performing as expected, the electronic expansion valve may be a contributing factor. Here are some common issues and troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| Improper Refrigerant Flow | Incorrect controller settings, electrical fault, valve blockage, or internal malfunction. |
|
| Refrigerant Leak | Poor brazing, damaged valve body, or loose connections. |
|
| Valve Not Responding | No power, faulty M12 cable, or controller malfunction. |
|
For complex issues or if you are unsure about any troubleshooting step, always contact a qualified HVAC/refrigeration technician.
7. Specifications
| Feature | Detail |
|---|---|
| Model | ETS250L 034G3606 |
| Cable | M12 Cable 034G7073 |
| Part Number | 025-41565-000 |
| Brand | Danfoss |
| Origin | Denmark |
| Media Temperature Range | -40°C to +70°C (-40°F to +158°F) |
| Max Working Pressure (PS/MWP) | 37 bar / 536 psig |
| Material | Aluminum alloy |
| Application | Commercial Manufacture (Cooler spare parts) |
| Package Weight | 5.0 kg |
| Package Dimensions (L x W x H) | 15 cm x 15 cm x 25 cm |
8. User Tips
No specific user tips are available from provided reviews or Q&A content for this product.
9. Warranty and Support
For warranty information, please refer to the terms and conditions provided by the original seller or contact Danfoss directly. Technical support can be obtained from the manufacturer or a certified refrigeration service provider.
Manufacturer: Danfoss (Made in Denmark)
Seller: LiuYu Store
