1. Product Overview
The Lang 2T-30402-07 is a genuine OEM replacement adjustable thermostat designed for heavy-duty food service equipment, including ovens, ranges, and steamers. This component ensures precise temperature control up to 550°F (approximately 287°C) for reliable and safe operation of your appliance.
Key Features:
- Genuine OEM Replacement Part
- Adjustable Temperature Control up to 550°F
- Designed for Lang heavy-duty food service equipment
- Ensures safety, reliability, and performance

Figure 1: Lang 2T-30402-07 Adjustable Thermostat. This image displays the thermostat unit, featuring a main control box, an adjustment shaft, and a coiled capillary tube with a sensing bulb extending from it. The components are silver-toned metal, indicating durability and suitability for industrial applications.
2. Safety Information
Always prioritize safety when handling and installing electrical components. Failure to follow these safety guidelines may result in property damage, personal injury, or death.
- Disconnect Power: Always ensure the appliance is completely disconnected from its power source before attempting any installation, maintenance, or repair.
- Qualified Personnel: Installation and servicing should only be performed by qualified and authorized service technicians.
- Genuine Parts: Use only genuine OEM replacement parts to ensure compatibility, safety, and optimal performance.
- Electrical Hazards: Be aware of potential electrical hazards. Do not touch live wires or components.
- Temperature: The thermostat controls high temperatures. Allow the appliance to cool down before servicing.
3. Setup and Installation
This thermostat is a replacement part and requires professional installation. Refer to the specific service manual for your Lang appliance model for detailed, step-by-step installation instructions. The following are general guidelines:
- Power Disconnection: Ensure the appliance is unplugged or the circuit breaker is off.
- Access Panel: Locate and remove the access panels to expose the existing thermostat.
- Wiring: Carefully disconnect the wiring from the old thermostat, noting the position of each wire. It is recommended to take a photograph before disconnecting.
- Removal: Remove the old thermostat, including its sensing bulb and capillary tube, from its mounting location.
- Installation: Install the new Lang 2T-30402-07 thermostat in the reverse order of removal. Ensure the sensing bulb is correctly positioned within the appliance's temperature-sensing area.
- Wiring Connection: Reconnect all wires securely to the new thermostat according to your appliance's wiring diagram.
- Testing: Before reassembling, restore power and test the thermostat's functionality.
- Reassembly: Once confirmed operational, reattach all access panels.
4. Operating Instructions
The Lang 2T-30402-07 thermostat provides manual temperature control for your appliance. Once installed, operation typically involves adjusting the control knob (not included with this replacement part) to the desired temperature setting.
- Temperature Adjustment: Rotate the control knob clockwise to increase the temperature and counter-clockwise to decrease it.
- Monitoring: Monitor the appliance's internal temperature to ensure it reaches and maintains the set point.
- Calibration: If temperature discrepancies are observed, consult your appliance's service manual for calibration procedures, which may require specialized tools.
5. Maintenance
Regular maintenance ensures the longevity and accurate performance of your thermostat and appliance.
- Inspection: Periodically inspect the thermostat and its wiring for any signs of wear, damage, or loose connections.
- Cleaning: Ensure the area around the thermostat's sensing bulb is clean and free from debris or grease buildup, which can affect temperature accuracy.
- Professional Check: It is recommended to have a qualified technician perform routine checks and calibrations as part of your appliance's preventative maintenance schedule.
6. Troubleshooting
If your appliance exhibits temperature control issues after thermostat installation, consider the following common troubleshooting steps:
- No Heat/Overheating:
- Verify power supply to the appliance.
- Check all wiring connections to the thermostat for security and correct placement.
- Ensure the sensing bulb is properly seated and not damaged.
- Confirm the control knob (if applicable) is set to the desired temperature.
- Inaccurate Temperature Readings:
- Inspect the sensing bulb for any physical damage or obstructions.
- Ensure the sensing bulb is positioned correctly within the appliance's heating chamber.
- Consider professional calibration if discrepancies persist.
- Thermostat Not Clicking: This may indicate a faulty thermostat or an issue with the electrical circuit. Consult a qualified technician.
For complex issues, always contact a qualified service technician.
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | 2T-30402-07 |
| Brand | Lang |
| Controller Type | Thermostat Controller |
| Temperature Control Type | Manual |
| Maximum Temperature | 550°F (approx. 287°C) |
| Material | Copper (sensing bulb/capillary tube) |
| Item Weight | 0.4 Pounds (approx. 6.4 ounces) |
| Product Dimensions | 5 x 11 x 12 inches (packaging/shipping dimensions) |
| Included Components | Replacement Part (Thermostat) |
| UPC | 046844064310 |
8. Warranty and Support
As a genuine OEM replacement part, the Lang 2T-30402-07 thermostat is typically covered by the manufacturer's standard warranty for replacement components. For specific warranty details, claims, or technical support, please refer to the documentation provided with your original Lang appliance or contact Lang customer service directly.
Contact Information:
- Refer to your original appliance manual for service contact details.
- Visit the official Lang website for support resources.