Introduction
This manual provides essential instructions for the safe and efficient operation, installation, and maintenance of your Fagor FA-640STX 4-Burner Gas Cooktop. Please read this manual thoroughly before using the appliance and keep it for future reference. This cooktop is designed to offer superior cooking performance with its four powerful sealed burners and universal ignition system.
Important Safety Information
WARNING: If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury or death.
- Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.
- WHAT TO DO IF YOU SMELL GAS:
- Do not try to light any appliance.
- Do not touch any electrical switch; do not use any phone in your building.
- Immediately call your gas supplier from a neighbor's phone. Follow the gas supplier's instructions.
- If you cannot reach your gas supplier, call the fire department.
- Installation and service must be performed by a qualified installer, service agency or the gas supplier.
- Ensure adequate ventilation when operating the cooktop.
- Never leave the cooktop unattended during operation.
- Keep children away from the appliance during use.
Setup and Installation
The Fagor FA-640STX cooktop is designed for built-in installation. Proper installation is crucial for safety and optimal performance. Refer to the detailed installation guide provided with your appliance for specific cutout dimensions and clearance requirements.
- Gas Supply: Ensure the cooktop is connected to the correct gas supply (Natural Gas or LPG). An LPG conversion kit is included for use with liquid propane gas. Conversion should only be performed by a qualified technician.
- Electrical Connection: The cooktop requires a 120 Volt electrical connection for the universal ignition system.
- Ventilation: Install the cooktop in an area with adequate ventilation, preferably under a range hood.

Image: Fagor FA-640STX 4-Burner Gas Cooktop. This image shows the stainless steel surface, four sealed burners with their grates, and the front-mounted metallic control knobs.
Operating Instructions
Your Fagor FA-640STX cooktop features four powerful sealed burners and a universal ignition system for reliable performance.
Igniting a Burner
- Ensure all burner caps and grates are correctly positioned.
- Push down and turn the desired metallic control knob counter-clockwise to the "HIGH" position. You will hear a clicking sound as the universal ignition system sparks.
- Once the burner ignites, continue to hold the knob down for a few seconds to allow the flame failure safety device to engage.
- Release the knob and adjust the flame to your desired cooking level.
Burner Types
- Standard Sealed Burners: Provide consistent heat for various cooking tasks.
- Triple Crown Burner (16,000 BTU/h): Located typically at the front or center, this high-power burner is ideal for rapid boiling, searing, and wok cooking.
Flame Failure Safety Device
Each burner is equipped with a flame failure safety device. If a flame accidentally extinguishes during operation, this device will automatically cut off the gas supply to that burner, preventing gas leaks. If a flame goes out, turn the control knob to the "OFF" position and wait for at least one minute before attempting to re-ignite.
Maintenance and Cleaning
Regular cleaning and maintenance will ensure the longevity and optimal performance of your cooktop.
- Before Cleaning: Always ensure the cooktop is cool and all control knobs are in the "OFF" position. Disconnect power if performing deep cleaning.
- Stainless Steel Surface: Clean with a soft cloth and a mild detergent or a specialized stainless steel cleaner. Always wipe in the direction of the grain to prevent scratching. Avoid abrasive cleaners or scouring pads.
- Sealed Burners: The sealed design helps contain spills. Clean burner caps and rings with warm soapy water. Ensure they are completely dry before reassembling. Do not immerse the ignition electrodes in water.
- Interlocking Continuous Grates: These grates can be removed for cleaning. Wash with warm soapy water or place in a dishwasher if recommended by the manufacturer (check specific product details). Ensure they are dry before placing them back on the cooktop.
- Control Knobs: The metallic knobs can be pulled off for cleaning. Wash with warm soapy water and dry thoroughly.
Troubleshooting
Before contacting service, review the following common issues and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Burner does not ignite. | No gas supply; burner parts wet or clogged; ignition electrode dirty or damaged; power supply issue. | Check gas valve; ensure burner parts are dry and clean; clean electrode; check electrical connection. |
| Flame is weak or uneven. | Burner ports clogged; incorrect gas pressure. | Clean burner ports; contact a qualified technician to check gas pressure. |
| Flame goes out after releasing knob. | Flame failure safety device not engaged; knob not held long enough. | Hold the control knob down for a few more seconds after ignition. |
| Gas odor detected. | Gas leak; burner not fully off. | Immediately follow "WHAT TO DO IF YOU SMELL GAS" instructions in the Safety Information section. Do not attempt to fix yourself. |
Specifications
| Feature | Detail |
|---|---|
| Brand | Fagor Commercial |
| Model Number | FA-640STX |
| Installation Type | Built-In |
| Number of Burners | 4 |
| Burner Type | Sealed |
| High Power Burner | Triple Crown Burner (16,000 BTU/h) |
| Ignition System Type | Electronic (Universal Ignition) |
| Fuel Type | Gas (LPG conversion kit included) |
| Voltage | 120 Volts |
| Material | Stainless Steel |
| Color | Stainless Steel |
| Item Weight | 25 pounds |
| Product Dimensions (D x W x H) | 20.07 x 22.83 x 2.15 inches |
Note: Specifications are subject to change without notice. Refer to your product packaging or Fagor's official website for the most current information.
Warranty Information
Specific warranty details for the Fagor FA-640STX Gas Cooktop are typically provided with the product at the time of purchase. Please refer to the warranty card or documentation included in your product packaging for terms, conditions, and registration information. Keep your proof of purchase for warranty claims.
Customer Support
For further assistance, technical support, or to inquire about replacement parts, please contact Fagor Commercial customer service or visit their official website.
You can find more information and contact details on the Fagor Commercial store page: Fagor Commercial Store





