ACS TPCP1A Commercial Gas Practice Questions - ACS TPCP1A Commercial Gas Pipework, Boosters And Compressors Exam

What primary function does a low-pressure cut-off (LPCO) switch perform on a commercial gas booster installation?

It trips the electrical supply to the booster if inlet gas pressure falls below a safe minimum threshold. It shuts down the booster if outlet pressure exceeds maximum appliance ratings. It modulates booster motor speed to maintain constant downstream pressure. It vents excess gas pressure to atmosphere during emergency shutdown.

Correct Answer:

It trips the electrical supply to the booster if inlet gas pressure falls below a safe minimum threshold.

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