What is indicated if the yellow discharge indicator for a fire extinguishing system is blown out?

What is indicated if the yellow discharge indicator for a fire extinguishing system is blown out?

• A. The system has been discharged by overheating.
• B. The system has been discharged by actuating the bottle discharge switch.
• C. The discharge indicator has faulted.
• D. The system is ready for recharge.

Answer: (B)

The yellow discharge indicator is a visual sign that the extinguishing bottle has released its agent. When the system is charged, the indicator stays in place; once the bottle is discharged, the indicator is blown out to show that a release has occurred. In this scenario, the indicator being blown out specifically indicates that the discharge happened by actuating the bottle discharge switch, i.e., a manual release was performed. This confirms the system has discharged due to the switch being activated, not simply due to overheating or because the indicator itself failed. After discharge, the system will need to be recharged and the indicator reset.

The yellow discharge indicator is a visual sign that the extinguishing bottle has released its agent. When the system is charged, the indicator stays in place; once the bottle is discharged, the indicator is blown out to show that a release has occurred. In this scenario, the indicator being blown out specifically indicates that the discharge happened by actuating the bottle discharge switch, i.e., a manual release was performed. This confirms the system has discharged due to the switch being activated, not simply due to overheating or because the indicator itself failed. After discharge, the system will need to be recharged and the indicator reset.