it should be inspected and potentially replaced alongside the motor to prevent premature bearing wear

Universal Brand Compatibility: Seamlessly integrates with Carrier

Integrated End Switch: The SPST auxiliary switch allows for seamless communication with the circular pump or boiler burner circuit

meaning it will reset to its normal state once the pressure differential drops below the set point differential

compression-based seal

Grundfos 00519652 Flange Set 321142-301 it should be inspected andThe Grundfos 00519652 Flange Set is a professional grade 1" FNPT hardware kit engineered specifically for the Grundfos UP Series and UPS Series circulator pumps. As a veteran technician knows, using the correct bronze pump flanges is critical in open loop or potable water systems to prevent the accelerated corrosion and "red water" issues common with standard cast iron components. This GF 15 26 flange kit ensures a leak free, high integrity connection