G2 Gas Fitter Practice Exam

If the flame safeguard control does not deactivate the gas shut-off valves within the specified time, it can be concluded that there may be a malfunction in the control. The flame safeguard system is designed to ensure safe operation by detecting whether the flame is present or absent. If the system fails to respond appropriately by not shutting off the gas within the designated timeframe, it indicates that the control mechanism may not be functioning as intended. This malfunction could arise from several issues, such as a defective sensor, broken wiring, or a failure in the logic of the control system itself. Each of these potential failures would prevent the control from executing its safety function, which is critical for preventing gas leaks and potential hazardous situations. In contrast, a properly functioning sensor would indicate a safe condition by activating the gas shut-off valves in time, while issues such as a strong pilot flame or low gas pressure would not typically lead to a failure in the control's timing response but rather affect the combustion process itself. Thus, the inability to deactivate the gas shut-off valves points clearly to a control malfunction.