Danfoss 077B-7008
Danfoss 077B-7008 NO.8 Thermostat KIT Bottle Cooler User Manual
Model: 077B-7008 | Brand: Danfoss
Introduction
This user manual provides essential information for the proper installation, operation, and maintenance of the Danfoss 077B-7008 NO.8 Thermostat Kit for Bottle Coolers. This thermostat is designed to regulate temperature in bottle cooler applications, ensuring efficient and reliable performance. Please read this manual thoroughly before installation and use to ensure safety and optimal functionality.
Safety Information
WARNING: Improper installation or use can lead to electric shock, fire, or damage to the equipment. Always follow local electrical codes and safety regulations.
- Disconnect power to the bottle cooler before installing or servicing the thermostat.
- Installation should only be performed by qualified personnel.
- Ensure all wiring connections are secure and properly insulated.
- Do not operate the thermostat if it appears damaged.
- Refer to the bottle cooler's specific wiring diagram for correct connections.
Package Contents
Verify that all components are present before beginning installation:
Image: Overview of the Danfoss 077B-7008 Thermostat Kit, showing the main thermostat body, a coiled capillary tube, a control knob, a temperature dial, mounting hardware (screws, nuts, clips), and electrical connectors.
- Danfoss 077B-7008 Thermostat Unit
- Capillary Tube with Sensor Bulb
- Control Knob
- Temperature Dial Plate
- Mounting Bracket
- Mounting Screws and Nuts
- Electrical Terminal Connectors
Setup and Installation
The installation process involves mounting the thermostat, connecting the capillary tube, and wiring the electrical connections. Always refer to the specific wiring diagram of your bottle cooler for accurate connections.
- Power Disconnection: Ensure the bottle cooler is completely disconnected from the power supply.
- Remove Old Thermostat: Carefully remove the existing thermostat, noting its wiring configuration and sensor bulb placement.
- Mounting: Mount the new Danfoss 077B-7008 thermostat unit in the designated location using the provided mounting bracket, screws, and nuts. Ensure it is securely fastened.
- Capillary Tube Installation: Carefully route the capillary tube and position the sensor bulb in the same location as the original sensor. Avoid kinking or sharply bending the capillary tube. The sensor bulb must be in good thermal contact with the area where temperature is to be controlled.
- Electrical Wiring: Connect the electrical wires to the thermostat terminals. The thermostat features screw terminals. Refer to the bottle cooler's wiring diagram for correct connections (e.g., power input, compressor output). The contact type is Normally Open, and the operation mode is ON-OFF-ON.
- Install Knob and Dial: Place the temperature dial plate over the thermostat shaft, aligning it correctly. Then, push the control knob onto the shaft.
- Power Reconnection: Once all connections are secure and verified, restore power to the bottle cooler.
Operating Instructions
The Danfoss 077B-7008 thermostat controls the temperature by switching the cooling system on and off based on the set point and the temperature detected by the capillary tube sensor.
- Setting Temperature: Rotate the control knob to the desired temperature setting on the dial. Higher numbers typically correspond to colder temperatures (e.g., "Colder" indication on the dial).
- Temperature Range: The thermostat will cycle the cooling system to maintain the temperature within a specific range around the set point.
- Initial Startup: After installation, allow the bottle cooler to run for several hours to reach the stable operating temperature.
Maintenance
The Danfoss 077B-7008 thermostat is designed for long-term reliability with minimal maintenance. However, periodic checks can help ensure optimal performance.
- Cleaning: Keep the thermostat and its immediate surroundings clean and free of dust or debris. Use a dry cloth for cleaning.
- Connections: Periodically inspect electrical connections for tightness and signs of corrosion. Ensure the sensor bulb remains securely in place and has good thermal contact.
- Capillary Tube: Ensure the capillary tube is not damaged, kinked, or exposed to excessive heat sources.
Troubleshooting
If you experience issues with your thermostat, consider the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Cooler not cooling (or not turning on) | No power to thermostat; Thermostat set too high; Faulty wiring; Damaged sensor bulb. | Check power supply; Adjust thermostat to a colder setting; Verify all electrical connections; Inspect sensor bulb for damage. |
| Cooler running continuously (or too cold) | Thermostat set too low; Sensor bulb not properly placed or damaged; Thermostat contacts stuck closed. | Adjust thermostat to a warmer setting; Ensure sensor bulb is correctly positioned and making good thermal contact; If contacts are stuck, replacement may be necessary. |
| Inconsistent temperature control | Poor sensor bulb placement; Air circulation issues in cooler; Thermostat calibration issue. | Verify sensor bulb placement and thermal contact; Check for obstructions to air flow; Consult a qualified technician for calibration or replacement. |
If troubleshooting steps do not resolve the issue, contact a qualified HVAC technician or Danfoss customer support for assistance.
Specifications
| Feature | Detail |
|---|---|
| Brand | Danfoss |
| Model Number | 077B-7008 |
| Product Dimensions | 15.04 x 14.72 x 8.52 inches; 4.44 ounces |
| Operation Mode | ON-OFF-ON |
| Contact Type | Normally Open |
| Connector Type | Screw Terminals |
| Terminal | Screw |
| Circuit Type | 1-way |
| Actuator Type | Rotary |
| Contact Material | Copper, Brass, Silver |
| International Protection Rating | IP65 |
| Manufacturer | Danfoss |
| Date First Available | June 5, 2010 |
Warranty and Support
For information regarding product warranty, technical support, or service, please contact Danfoss directly or visit their official website. Ensure you have your product model number (077B-7008) and purchase details available when seeking support.
You can find more information and contact details on the Danfoss Store on Amazon.
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