Instruction Manual

1. Product Overview

The uxcell Capillary Thermostat is a temperature control switch designed for various home appliances and electrical equipment. It operates on the principle of liquid expansion and contraction to regulate temperature within a range of 30 to 110 degrees Celsius. This device is suitable for applications such as ovens, refrigerators, heaters, and more.

Figure 1.1: Overview of the uxcell Capillary Thermostat. This image displays the main body of the thermostat with its temperature dial, two terminals, and the extended capillary tube with its sensing bulb.

2. Safety Information

Please read and understand all safety instructions before installing or operating this device. Failure to do so may result in electric shock, fire, or serious injury.

• Electrical Hazard: This device operates at AC 250V. Installation and wiring should only be performed by qualified personnel. Always disconnect power before working with electrical connections.
• Proper Application: Ensure the thermostat is suitable for the intended application's voltage and current requirements (AC 250V, 16A).
• Temperature Range: Do not use this thermostat outside its specified temperature range of 30-110°C.
• Accuracy Note: This liquid expansion temperature controller operates on thermal expansion and cold contraction. Its accuracy may not be as high as digital thermostats. For applications requiring high precision, consider a digital display thermostat.
• Physical Damage: Do not bend, crimp, or damage the capillary tube or sensing bulb, as this can affect accuracy and functionality.
• Proposition 65 Warning: This product may expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.

3. Product Components and Features

The uxcell Capillary Thermostat consists of the following main components:

• Temperature Dial: Used to set the desired temperature.
• Capillary Tube and Sensing Bulb: Contains a liquid that expands and contracts with temperature changes, activating the switch. The contact stick length is 70mm / 2.8".
• Electrical Terminals: Two terminals for connecting to the electrical circuit.
• Switch Mechanism: A 1-way mechanical switch that opens or closes the circuit based on the set temperature.

Figure 3.1: uxcell Capillary Thermostat showing its electrical ratings. This image highlights the AC 250V 16A rating, indicating the maximum voltage and current the thermostat can handle, alongside a smaller inset view of the capillary tube and sensing bulb.

4. Setup and Installation

Proper installation is crucial for the safe and effective operation of the thermostat. If you are unsure about any steps, consult a qualified electrician.

1. Power Disconnection: Before beginning any installation, ensure that the main power supply to the appliance or circuit is completely disconnected.
2. Mounting: The thermostat is designed for through-hole mounting. Securely mount the thermostat in the desired location using appropriate fasteners. Ensure it is stable and not subject to excessive vibration.
3. Capillary Tube Placement: Carefully route the capillary tube and position the sensing bulb in the area where temperature control is required. The bulb must be in direct contact with the medium or air whose temperature is to be measured. Avoid sharp bends or kinks in the capillary tube.
4. Wiring: Connect the two electrical terminals of the thermostat into the control circuit of your appliance. Refer to the appliance's wiring diagram for correct connections. Ensure all connections are secure and insulated. This is a 1-way switch.
5. Verification: Double-check all connections and mounting before restoring power.

5. Operating Instructions

Once installed and wired correctly, operating the thermostat is straightforward.

1. Restore Power: Turn on the main power supply to the appliance or circuit.
2. Set Temperature: Rotate the temperature dial to the desired temperature setting within the 30-110°C range. The thermostat will activate (close or open its contacts, depending on its configuration) when the sensed temperature reaches the set point.
3. Monitoring: Monitor the appliance's operation to ensure the thermostat is maintaining the desired temperature.

Note: Due to the mechanical nature of this liquid expansion thermostat, there may be a slight hysteresis (temperature differential) between the cut-in and cut-out points. This is normal for this type of device.

6. Maintenance

The uxcell Capillary Thermostat requires minimal maintenance to ensure long-term performance.

• Regular Inspection: Periodically inspect the thermostat, capillary tube, and sensing bulb for any signs of physical damage, corrosion, or loose connections.
• Cleaning: If necessary, gently clean the exterior of the thermostat and the sensing bulb with a soft, dry cloth. Do not use abrasive cleaners or solvents. Ensure power is disconnected before cleaning.
• Avoid Damage: Do not attempt to repair or modify the capillary tube or sensing bulb. If damaged, the unit should be replaced.

7. Troubleshooting

If you encounter issues with your uxcell Capillary Thermostat, refer to the following common problems and solutions:

If the problem persists after attempting these solutions, contact uxcell customer support or a qualified technician.

8. Specifications

9. Warranty and Support

For warranty information and technical support regarding your uxcell Capillary Thermostat, please contact the manufacturer directly. Details regarding specific warranty periods and terms are typically provided with your purchase documentation or can be obtained from the uxcell official website.

While Amazon's return policy for this product is 30 days, this is separate from any manufacturer's warranty.

You can visit the uxcell store on Amazon for more information: uxcell Amazon Store