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Answer: 1. Place ceramic tiles underneath the hotplate.
2. Correctly install and firmly plug in the large connector.
3. Check that the thermocouple is in tight contact with the plate surface.
4. During use, avoid placing large vessels like water baths. When samples are small, distribute them evenly across the plate.
Answer: This indicates a broken thermocouple wire or a poor connection.
Answer: 1. Correctly install and firmly plug in the large connector.
2. Ensure the knob indicator returns to zero before turning on the power switch.
3. After use, turn the knob back to zero before switching off the main power.
4. Please note that the voltage requirement for model TD467 is 380V.
Answer: This is usually caused by poor contact between the thermocouple and the plate. Clean the contact surfaces thoroughly to restore normal function.
Answer: Use a steel brush dipped in dilute acid to scrub the stains directly.
Answer: This indicates that the two wires of the thermocouple are reversed.