1. Preparation before use: Secure the equipment stably, connect the power supply and preheat until the temperature stabilizes at 253℃-274℃ (standard value 260℃). Select and tighten a qualified welding sleeve matching the pipe diameter. Wipe the heating head clean with a dry cloth, and simultaneously clean the oil and moisture from the pipe welding surface. Mark the insertion depth.
2. Standard hot-melt butt welding: Push the pipe and fitting into the heating head without rotation. Control the heating time according to the pipe diameter (approximately 5 seconds for 20mm pipe, approximately 7 seconds for 25mm pipe). After heating, quickly remove the fitting and insert it into the marked position along the axis without rotation.
3. Cooling and finishing: Keep the joint fixed and allow it to cool naturally for at least 30 seconds. Do not rotate or adjust during this time. After cooling, check the joint for misalignment and defects. Disconnect the power immediately after use and clean and store the heating head after it has cooled down.
4. Safety Precautions: Wear high-temperature resistant gloves and goggles during operation, avoid hand contact with the high-temperature heating plate, keep the work area away from flammable and explosive materials, and use special machinery to assist in the operation of large-diameter pipes of 40mm or more to ensure straightness of the connection.
