Fault diagnosis and troubleshooting methods for acid value testers

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Methods for diagnosing and troubleshooting acid value testers. Sequence, cause of fault, troubleshooting method, notes: 1. The power indicator light does not light up – Check whether the power supply and connectors are properly connected. 2. The peristaltic pump does not deliver liquid: 1. Verify that the tubing is properly connected. 2. Check for leaks in the tubing. 3. Ensure the tubing is oriented correctly. 3. The sample does not absorb light – Reduce the amount of sample used for testing. 4. The sample absorbs light but does not change color: 1. If no color change occurs, it indicates that the testing is complete; adjust the stirring speed. 2. When adding the neutralizing solution, avoid the formation of a blue light column to prevent incorrect readings. 5. The turntable keeps rotating – Check whether the photoelectric sensor is functioning properly