What preliminary checks should be conducted on the CGI before starting an inspection?

The appropriate answer emphasizes the importance of thorough initial checks before inspecting the Combustible Gas Indicator (CGI) to ensure accurate readings and safe operation. Conducting a battery check is essential since a low battery could compromise the functionality of the device during the inspection. Additionally, filters should be inspected to ensure they are clean and free from obstructions, as dirty filters can affect the performance and sensitivity of the instrument. Probes, being critical components that detect gas, must also be examined for any wear or damage, which could lead to inaccurate gas detections. Finally, verifying the tightness of connections is vital to prevent any gas leaks that could pose safety hazards during inspections. This comprehensive approach ensures that the CGI is in optimal working condition prior to commencing any gas piping inspections, thus enhancing both safety and accuracy.