On a rotary cup type burner, the low gas pressure limit switch should be electronically interlocked to which component?

The low gas pressure limit switch is designed to monitor the gas pressure supplied to the burner. In the case of a rotary cup type burner, it is crucial that the fuel solenoid valve is electronically interlocked with the low gas pressure limit switch. This interlock is essential because if the gas pressure falls below a certain threshold, the solenoid valve will close automatically, preventing any fuel from being delivered to the burner. This safety feature is important to prevent unsafe operating conditions such as the accumulation of unburned fuel, which could lead to dangerous situations like explosions or fires.

By ensuring that the fuel solenoid valve is linked to the low gas pressure limit switch, the burner system can safely control the flow of fuel based on the pressure conditions, thus protecting both the equipment and personnel from potential hazards.