Pool recirculation pump safety system and method

A pool recirculation pump safety system comprising:

• a power supply assembly operable to selectively supply operating power to a recirculation pump motor;
• an entrapment detection assembly operable to detect a change in a recirculation system parameter indicative of swimmer entrapment at a suction intake opening;
• and
• a timer assembly operable to automatically bypass the entrapment detection assembly for a predetermined time period upon energization of the system;
• wherein, during operation of the recirculation pump motor, the system is configured to secure operating power to the recirculation pump motor upon detection of the indicative recirculation system parameter change after the predetermined time period;
• and
• wherein the timer assembly does not automatically bypass the entrapment detection assembly for the predetermined time period upon energization of the system following a shutdown triggered by the entrapment detection assembly.

A pool recirculation pump safety system comprising:

• a power supply assembly including a power relay with a relay coil energizable to close normally open load supply contacts for recirculation pump motor;
• an entrapment detection assembly including a sensor and corresponding switch that closes only when a sensed recirculation system parameter reaches a predetermined threshold, the switch being arranged in series with the relay coil;
• and
• a timer assembly including a normally open time delay relay that automatically closes for a predetermined time period upon energization of the system, the time delay relay being arranged in series with the relay coil and in parallel with the switch.