The pneumatic bell starts at 1575 PSI and stops at what pressure?

• A. 1575 PSI
• B. 200 PSI
• C. 1200 PSI
• D. 400 PSI

Answer: (B)

Pneumatic tools use a defined operating range with a high start pressure and a low cutoff to protect the equipment and ensure safe operation. In this case, when the bell is charged, it begins at 1575 PSI. It is designed to stop at a low pressure to prevent running on too little air and to leave a safe margin for shutdown and recharging. That cutoff is 200 PSI, so the bell stops there. The other pressures would either leave too much air unused, be inconsistent with the device’s safety design, or imply a stop at a non-specified point. Therefore, 200 PSI is the correct stopping pressure.