Tiba SW-30 coin validator rejecting loonies and toonies after cleaning. Diagnose coin sensor misalignment and implement safe, non-invasive solutions.
The type of cleaning solution can cause a wide range of signal faults.
Power cycling can reset the internal logic controllers.
If other coin types are also affected, this would point to a deeper calibration issue or a power supply problem.
Coin validators use inductive proximity sensors or optical sensors to identify coin denominations based on metallic composition, size, and thickness. The sensors output an analog voltage signal, which is then digitized and compared to stored reference values. Misalignment or contamination of the sensor can alter the detected inductance or light reflection, leading to incorrect denomination identification. The Tiba SW-30 operates on a 24V DC system, supplying power to the coin validation module. Sensor sensitivity is affected by the stability of the 24V DC power supply and any electromagnetic interference (EMI).
The Tiba SW-30 operates on a 24V DC system. Ensure that the power supply is disconnected before performing any maintenance or troubleshooting procedures. Follow Lockout/Tagout (LOTO) procedures to prevent accidental energization of the system during maintenance. Wear appropriate personal protective equipment (PPE), such as safety glasses and gloves.
Regularly clean the coin validator using a dry, lint-free cloth. Avoid using excessive force or abrasive cleaners. Ensure that the area around the coin validator is free from dust and debris. Inspect the wiring harness and connectors periodically for signs of damage or corrosion. Verify input voltage stability.
Erratic coin rejection can sometimes be caused by static electricity buildup. Try grounding the metal chassis of the coin validator to the kiosk's grounding point using a grounding strap. This can help dissipate static electricity and improve sensor accuracy.