Weil McLain 511-624-450 Switch Els PW 17895 a lack of continuity indicates

a lack of continuity indicates the switch has failed in the open position or the internal bi-metal strip is fatigued

It is purpose-built to fit Crathco bowl model 1288

By maintaining compressor oil viscosity in cold ambient conditions

This coil is specifically calibrated for GC Valves S4 series operators

Weil McLain 511-624-450 Switch Els PW 17895 a lack of continuity indicatesThe Weil McLain 511 624 450 is a high precision differential pressure switch engineered specifically for CGi model boilers (sizes 25, 3, and 4) and certain HE II boiler applications. This OEM replacement part is factory calibrated to a 1. 18" WC nominal set point, ensuring critical safety monitoring of the exhaust vent and combustion air system. With an operational differential range of 0. 5 to 2. 0" WC, it effectively prevents the boiler burner from